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+<HTML>
+<HEAD>
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+<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
+
+<TITLE>
+The Project Gutenberg E-text of Tom Swift and his Air Glider,
+by Victor Appleton
+</TITLE>
+
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+<pre>
+
+Project Gutenberg's Tom Swift and his Air Glider, by Victor Appleton
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+
+Title: Tom Swift and his Air Glider
+ or, Seeking the Platinum Treasure
+
+Author: Victor Appleton
+
+Posting Date: July 13, 2008 [EBook #952]
+Release Date: June, 1997
+Last updated: January 30, 2012
+Last updated: April 22, 2012
+
+Language: English
+
+Character set encoding: ISO-8859-1
+
+*** START OF THIS PROJECT GUTENBERG EBOOK TOM SWIFT AND HIS AIR GLIDER ***
+
+
+
+
+Produced by Anthony Matonac.
+
+
+
+
+
+</pre>
+
+
+<BR><BR>
+
+<H1 ALIGN="center">
+TOM SWIFT AND HIS AIR GLIDER
+</H1>
+
+<H3 ALIGN="center">
+or
+</H3>
+
+<H2 ALIGN="center">
+Seeking the Platinum Treasure
+</H2>
+
+<BR>
+
+<H3 ALIGN="center">
+By
+</H3>
+
+<H2 ALIGN="center">
+VICTOR APPLETON
+</H2>
+
+<BR><BR><BR>
+
+<H2 ALIGN="center">
+CONTENTS
+</H2>
+
+<TABLE ALIGN="center" WIDTH="80%">
+
+<TR>
+<TD ALIGN="right" VALIGN="top">I&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap01">A Breakdown</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">II&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap02">A Daring Project</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">III&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap03">The Hand of the Czar</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">IV&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap04">The Search</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">V&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap05">A Clew from Russia</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">VI&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap06">Rescuing Mr. Petrofsky</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">VII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap07">The Air Glider</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">VIII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap08">In a Great Gale</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">IX&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap09">The Spies</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">X&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap10">Off in the Airship</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XI&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap11">A Storm at Sea</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap12">An Accident</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XIII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap13">Seeking a Quarrel</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XIV&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap14">Hurried Flight</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XV&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap15">Pursued</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XVI&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap16">The Nihilists</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XVII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap17">On to Siberia</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XVIII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap18">In a Russian Prison</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XIX&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap19">Lost in a Salt Mine</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XX&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap20">The Escape</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XXI&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap21">The Rescue</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XXII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap22">In the Hurricane</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XXIII&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap23">The Lost Mine</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XXIV&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap24">The Leaking Tanks</A></TD>
+</TR>
+
+<TR>
+<TD ALIGN="right" VALIGN="top">XXV&nbsp;&nbsp;</TD>
+<TD ALIGN="left" VALIGN="top">
+<A HREF="#chap25">Homeward Bound&mdash;Conclusion</A></TD>
+</TR>
+
+</TABLE>
+
+<BR><BR><BR>
+
+<A NAME="chap01"></A>
+<H1 ALIGN="center">
+TOM SWIFT AND HIS AIR GLIDER
+</H1>
+
+<BR>
+
+<H3 ALIGN="center">
+CHAPTER I
+</H3>
+
+<H3 ALIGN="center">
+A BREAKDOWN
+</H3>
+
+<P>
+"Well, Ned, are you ready?"
+</P>
+
+<P>
+"Oh, I suppose so, Tom. As ready as I ever shall be."
+</P>
+
+<P>
+"Why, Ned Newton, you're not getting afraid; are you? And after you've
+been on so many trips with me?"
+</P>
+
+<P>
+"No, it isn't exactly that, Tom. I'd go in a minute if you didn't have
+this new fangled thing on your airship. But how do you know how it's
+going to work&mdash;or whether it will work at all? We may come a cropper."
+</P>
+
+<P>
+"Bless my insurance policy!" exclaimed a man who was standing near the
+two lads who were conversing. "You'd better keep near the ground, Tom."
+</P>
+
+<P>
+"Oh, that's all right, Mr. Damon," answered Tom Swift. "There isn't any
+more danger than there ever was, but I guess Ned is nervous since our
+trip to the underground city of gold."
+</P>
+
+<P>
+"I am not!" indignantly exclaimed the other lad, with a look at the
+young inventor. "But you know yourself, Tom, that putting this new
+propeller on your airship, changing the wing tips, and re-gearing the
+motor has made an altogether different sort of a craft of it. You,
+yourself, said it wasn't as reliable as before, even though it does go
+faster."
+</P>
+
+<P>
+"Now look here, Ned!" burst out Tom. "That was last week that I said it
+wasn't reliable. It is now, for I've tried it out several times, and
+yet, when I ask you to take a trip with me, to act as ballast&mdash;"
+</P>
+
+<P>
+"Is that all you want me for, Tom, to act as ballast? Then you'd better
+take a bag of sand&mdash;or Mr. Damon here!"
+</P>
+
+<P>
+"Me? I guess not! Bless my diamond ring! My wife hasn't forgiven me for
+going off on that last trip with you, Tom, and I'm not going to take
+any more right away. But I don't blame Ned&mdash;"
+</P>
+
+<P>
+"Say, look here!" cried Tom, a little out of patience, "you know me
+better than that, Ned. Of course you're more than ballast&mdash;I want you to
+help me manage the craft since I made the changes on her. Now if you
+don't want to come, why say so, and I'll get Eradicate. I don't believe
+he'll be afraid, even if he&mdash;"
+</P>
+
+<P>
+"Hold on dar now, Massa Tom!" exclaimed an aged colored man, who was an
+all around helper at the Swift homestead, "was yo' referencin' t' me
+when yo' spoke?"
+</P>
+
+<P>
+"Yes, Rad, I was saying that if Ned wouldn't go up in the airship with
+me you would."
+</P>
+
+<P>
+"Well, now, Masa Tom, I shorely would laik t' 'blige yo', I shore
+would. But de fack ob de mattah am dat I has a mos' particular job ob
+white washin' t' do dish mornin', an' I 'spects I'd better be gittin'
+at it. It's a mos' particular job, an', only fo' dat, I'd be mos'
+pleased t' go up in de airship. But as it am, I mus' ax yo' t' 'scuse
+me, I really mus'," and the colored man shuffled off at a faster gait
+than he was in the habit of using.
+</P>
+
+<P>
+"Well, of all things!" gasped Tom. "I believe you're all afraid of the
+old airship, just because I made some changes in her. I'll go up alone,
+that's what I will."
+</P>
+
+<P>
+"No, I'll go with you," interposed Ned Newton who was Tom's most
+particular chum. "I only wanted to be sure it was all right, that was
+all."
+</P>
+
+<P>
+"Well, if you've fully made up your mind," went on the young inventor,
+a little mollified, "lend me a hand to get her in shape for a run. I
+expect to make faster time than I ever did before, and I'm going to
+head out Waterford way. You'd better come along, Mr. Damon, and I'll
+drop you off at your house."
+</P>
+
+<P>
+"Bless my feather bed!" gasped the man. "Drop me off! I like that, Tom
+Swift!"
+</P>
+
+<P>
+"Oh, I didn't mean it exactly that way," laughed Tom. "But will you
+come."
+</P>
+
+<P>
+"No, thanks, I'm going home by trolley," and then as the odd man went
+in the house to speak to Tom's father, the two lads busied themselves
+about the airship.
+</P>
+
+<P>
+This was a large aeroplane, one of the largest Tom Swift had ever
+constructed, and he was a lad who had invented many kinds of machinery
+besides crafts for navigating the upper regions. It was not as large as
+his combined aeroplane and dirigible balloon of which I have told you
+in other books, but it was of sufficient size to carry three persons
+besides other weight.
+</P>
+
+<P>
+Tom had built it some years before, and it had seemed good enough then.
+Later he constructed some of different models, besides the big
+combination affair, and he had gone on several trips in that.
+</P>
+
+<P>
+He and his chum Ned, together with Eradicate Sampson, the colored man,
+and Mr. Damon, had been to a wonderful underground city of gold in
+Mexico, and it was soon after their return from this perilous trip that
+Tom had begun the work of changing his old aeroplane into a speedier
+craft.
+</P>
+
+<P>
+This had occupied him most of the Winter, and now that Spring had come
+he had a chance to try what a re-built motor, changed propellers, and
+different wing tips would do for the machine.
+</P>
+
+<P>
+The time had come for the test and, as we have seen, Tom had some
+difficulty in persuading anyone to go along with him! But Ned finally
+got over his feeling of nervousness.
+</P>
+
+<P>
+"Understand, Tom," spoke Ned, "it isn't because I don't think you know
+how to work an aeroplane that I hesitated. I've been up in the air with
+you enough times to know that you're there with the goods, but I don't
+believe even you know what this machine is going to do."
+</P>
+
+<P>
+"I can pretty nearly tell. I'm sure my theory is right."
+</P>
+
+<P>
+"I don't doubt that. But will it work out in practice?"
+</P>
+
+<P>
+"She may not make all the speed I hope she will, and I may not be able
+to push her high into the air quicker than I used to before I made the
+changes," admitted Tom, "but I'm sure of one thing. She'll fly, and she
+won't come down until I'm ready to let her. So you needn't worry about
+getting hurt."
+</P>
+
+<P>
+"All right&mdash;if you say so. Now what do you want me to do, Tom?"
+</P>
+
+<P>
+"Go over the wire guys and stays for the first thing. There's going to
+be lots of vibration, with the re-built motor, and I want everything
+tight."
+</P>
+
+<P>
+"Aye, aye, sir!" answered Ned with a laugh.
+</P>
+
+<P>
+Then he set at his task, tightening the small nuts, and screwing up the
+turn-buckles, while Tom busied himself over the motor. There was some
+small trouble with the carburetor that needed eliminating before it
+would feed properly.
+</P>
+
+<P>
+"How about the tires?" asked Ned, when he had finished the wires.
+</P>
+
+<P>
+"You might pump them up. There, the motor is all right. I'm going to
+try it now, while you attend to the tires."
+</P>
+
+<P>
+Ned had pumped up one of the rubber circlets of the small bicycle
+wheels on which the aeroplane rested, and was beginning on the second,
+when a noise like a battery of machine guns going off next to his ear
+startled him so that he jumped, tripped over a stone and went down, the
+air pump thumping him in the back.
+</P>
+
+<P>
+"What in the world happened, Tom?" he yelled, for he had to use all his
+lung power to be heard above that racket. "Did it explode?"
+</P>
+
+<P>
+"Explode nothing!" shouted Tom. "That's the re-built motor in action."
+</P>
+
+<P>
+"In action! I should say it was in action. Is it always going to roar
+like that?"
+</P>
+
+<P>
+Indeed the motor was roaring away, spitting fire and burnt gases from
+the exhaust pipe, and enveloping the aeroplane in a whitish haze of
+choking smoke.
+</P>
+
+<P>
+No, I have the muffler cut out, and that's why she barks so. But she
+runs easier that way, and I want to get her smoothed out a bit.
+</P>
+
+<P>
+"Whew! That smoke!" gasped his chum. "Why don't you&mdash;whew&mdash;this is more
+than I can stand," and holding his hands to his smarting eyes, Ned,
+gasping and choking, staggered away to where the air was better.
+</P>
+
+<P>
+"It is sort of thick," admitted Tom. "But that's only because she's
+getting too much oil. She'll clear in a few minutes. Stick around and
+we'll go up."
+</P>
+
+<P>
+Despite the choking vapor, the young inventor stuck to his task of
+regulating the motor, and in a short while the smoke became less, while
+the big propeller blades whirled about more evenly. Then Tom adjusted
+the muffler, and most of the noise stopped.
+</P>
+
+<P>
+"Come on back, and finish pumping up the tires," he shouted to Ned.
+"I'm going to stop her now, and then I'll give her the pressure test,
+and we'll take a trip."
+</P>
+
+<P>
+Having cleared his eyes of smoke, Ned came back to his task, and this
+having been finished, Tom attached a heavy spring balance, or scales,
+to the rope that held the airship back from moving when her propellers
+were whirling about.
+</P>
+
+<P>
+"How much pressure do you want?" asked Ned.
+</P>
+
+<P>
+"I ought to get above twelve hundred with the way the motor is geared,
+but I'll go up with ten. Watch the needle for me."
+</P>
+
+<P>
+It may be explained that when aeroplanes are tested on the earth the
+propellers are set in motion. This of course would send a craft
+whizzing over the ground, eventually to rise in the air, but for the
+fact that a rope, attached to the craft, and to some stationary object,
+holds it back.
+</P>
+
+<P>
+Now if this rope is hooked to a spring balance, which in turn is made
+fast to the stationary object, the "thrust" of the propellers will be
+registered in pounds on the scale of the balance. Anywhere from five
+hundred to nine hundred pounds of thrust will take a monoplane or
+biplane up. But Tom wanted more than this.
+</P>
+
+<P>
+Once more the motor coughed and spluttered, and the big blades whirled
+about so fast that they seemed like solid pieces of wood. Tom stood on
+the ground near the levers which controlled the speed, and Ned watched
+the scale.
+</P>
+
+<P>
+"How much?" yelled the young inventor.
+</P>
+
+<P>
+"Eight hundred."
+</P>
+
+<P>
+Tom turned on a little more gasolene.
+</P>
+
+<P>
+"How much?" he cried again.
+</P>
+
+<P>
+"Ten hundred. That'll do!"
+</P>
+
+<P>
+"No, I'm going to try for more."
+</P>
+
+<P>
+Again he advanced the spark and gasolene levers, and the comparatively
+frail craft vibrated so that it seemed as if she would fly apart.
+</P>
+
+<P>
+"Now?" yelled Tom.
+</P>
+
+<P>
+"Eleven hundred and fifty!" cried Ned.
+</P>
+
+<P>
+"Good! That'll do it. She'll give more after she's been running a
+while. We'll go up."
+</P>
+
+<P>
+Ned scrambled to his seat, and Tom followed. He had an arrangement so
+that he could slip loose the retaining rope from his perch whenever he
+was ready.
+</P>
+
+<P>
+Waiting until the motor had run another minute, the young inventor
+pulled the rope that released them. Over the smooth starting ground
+that formed a part of the Swift homestead darted the aeroplane. Faster
+and faster she moved, Ned gripping the sides of his seat.
+</P>
+
+<P>
+"Here we go!" cried Tom, and the next instant they shot up into the air.
+</P>
+
+<P>
+Ned Newton had ridden many times with his chum Tom, and the sensation
+of gliding through the upper regions was not new to him. But this time
+there was something different. The propellers seemed to take hold of
+the air with a firmer grip. There was more power, and certainly the
+speed was terrific.
+</P>
+
+<P>
+"We're going fast!" yelled Ned into Tom's ear.
+</P>
+
+<P>
+"That's right," agreed the young inventor. "She'll beat anything but my
+Sky Racer, and she'd do that if she was the same size." Tom referred to
+a very small aeroplane he had made some time before. It was like some
+big bird, and very swift.
+</P>
+
+<P>
+Up and onward went the remodeled airship, faster and faster, until,
+when several miles had been covered, Ned realized that the young
+inventor had achieved another triumph.
+</P>
+
+<P>
+"It's great, Tom! Great!" he yelled.
+</P>
+
+<P>
+"Yes, I guess it will do, Ned. I'm satisfied. If there was an
+international meet now I'd capture some of the prizes. As it is&mdash;"
+</P>
+
+<P>
+Tom stopped suddenly. His voice which had been raised to overcome the
+noise of even the muffled motor, sounded unnaturally loud, and no
+wonder, for the engine had ceased working!
+</P>
+
+<P>
+"What's the matter?" gasped Ned.
+</P>
+
+<P>
+"I don't know&mdash;a breakdown of some kind."
+</P>
+
+<P>
+"Can you get it going again?"
+</P>
+
+<P>
+"I'm going to try."
+</P>
+
+<P>
+Tom was manipulating various levers, but with no effect. The aeroplane
+was shooting downward with frightful rapidity.
+</P>
+
+<P>
+"No use!" exclaimed the young inventor. "Something has broken."
+</P>
+
+<P>
+"But we're falling, Tom!"
+</P>
+
+<P>
+"I know it. We've done it before. I'm going to volplane to earth."
+</P>
+
+<P>
+This, it may be explained, is gliding downward from a height with the
+engine shut off. Aeroplanists often do it, and Tom was no novice at the
+art.
+</P>
+
+<P>
+They shot downward with less speed now, for the young inventor had
+thrown up his headplanes to act as a sort of brake. Then, a little
+later they made a good landing in a field near a small house, in a
+rather lonely stretch of country, about ten miles from Shopton, where
+Tom lived.
+</P>
+
+<P>
+"Now to see what the trouble is," remarked our hero, as he climbed out
+of his seat and began looking over the engine. He poked in among the
+numerous cogs, wheels and levers, and finally uttered an exclamation.
+</P>
+
+<P>
+"Find it?" asked Ned.
+</P>
+
+<P>
+"Yes, it's in the magneto. All the platinum bearings and contact
+surfaces have fused and crystallized. I never saw such poor platinum as
+I've been getting lately, and I pay the highest prices for it, too. The
+trouble is that the supply of platinum is giving out, and they'll have
+to find a substitute I guess."
+</P>
+
+<P>
+"Can't we go home in her?" asked Ned.
+</P>
+
+<P>
+"I'm afraid not. I've got to put in new platinum bearings and contacts
+before she'll spark. I only wish I could get hold of some of the better
+kind of metal."
+</P>
+
+<P>
+The magneto of an aeroplane performs a service similar to one in an
+automobile. It provides the spark that explodes the charge of gas in
+the cylinders, and platinum is a metal, more valuable now than gold,
+much used in the delicate parts of the magneto.
+</P>
+
+<P>
+"Well, I guess it's walk for ours," said Ned ruefully.
+</P>
+
+<P>
+"I'm afraid so," went on Tom. "If I only had some platinum, I could&mdash;"
+</P>
+
+<P>
+"Perhaps I could be of service to you," suddenly spoke a voice behind
+them, and turning, the youths saw a tall, bearded man, who had
+evidently come from the lonely house. "Did I hear you say you needed
+some platinum?" he asked. He spoke with a foreign accent, and Tom at
+once put him down for a Russian.
+</P>
+
+<P>
+"Yes, I need some for my magneto," began the young inventor.
+</P>
+
+<P>
+"If you will kindly step up to my house, perhaps I can give you what
+you want," went on the man. "My name is Ivan Petrofsky, and I have only
+lately come to live here."
+</P>
+
+<P>
+"I'm Tom Swift, of Shopton, and this is my chum, Ned Newton," replied
+the young inventor, completing the introductions. He was wondering why
+the man, who seemed a cultured gentleman, should live in such a lonely
+place, and he was wondering too how he happened to have some platinum.
+</P>
+
+<P>
+"Will that answer?" asked Mr. Petrofsky, when they had reached his
+house, and he had handed Tom several strips of the precious silverlike
+metal.
+</P>
+
+<P>
+"Do? I should say it would! My, but that is the best platinum I've seen
+in a long while!" exclaimed Tom, who was an expert judge of this metal.
+"Where did you get it, if I may ask?"
+</P>
+
+<P>
+"It came from a lost mine in Siberia," was the unexpected answer.
+</P>
+
+<P>
+"A lost mine?" gasped Tom.
+</P>
+
+<P>
+"In Siberia?" added Ned.
+</P>
+
+<P>
+Mr. Petrofsky slowly nodded his head, and smiled, but rather sadly.
+</P>
+
+<P>
+"A lost mine," he said slowly, "and if it could be found I would be the
+happiest man on earth for I would then be able to locate and save my
+brother, who is one of the Czar's exiles," and he seemed shaken by
+emotion.
+</P>
+
+<P>
+Tom and Ned stood looking at the bearded man, and then the young
+inventor glanced at the platinum strips in his hand while a strange and
+daring thought came to him.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap02"></A>
+<H3 ALIGN="center">
+CHAPTER II
+</H3>
+
+<H3 ALIGN="center">
+A DARING PROJECT
+</H3>
+
+<P>
+While Tom and his chum are in the house of the Russian, who so
+strangely produced the platinum just when it was most needed, I am
+going to take just a little time to tell you something about the hero
+of this story. Those who have read the previous books of this series
+need no introduction to him, but in justice to my new readers I must
+make a little explanation.
+</P>
+
+<P>
+Tom Swift was an inventor, as was his father before him. But Mr. Swift
+was getting too old, now, to do much, though he had a pet
+invention&mdash;that of a gyroscope&mdash;on which he worked from time to time.
+Tom lived with his father in the village of Shopton, in New York state.
+His mother was dead, but a housekeeper, named Mrs. Baggert, looked
+after the wants of the inventors, young and old.
+</P>
+
+<P>
+The first book of the series was called "Tom Swift and His
+Motor-Cycle," and in that I related how Tom bought the machine from a
+Mr. Wakefield Damon, of Waterford, after the odd gentleman had
+unintentionally started to climb a tree with it. That disgusted Mr.
+Damon with motor-cycling, and Tom had lots of fun on the machine, and
+not a few daring adventures.
+</P>
+
+<P>
+He and Mr. Damon became firm friends, and the oddity of the
+gentleman&mdash;mainly that of blessing everything he could think of&mdash;was no
+objection in Tom's mind. The young inventor and Ned Newton went on many
+trips together, Mr. Damon being one of the party.
+</P>
+
+<P>
+In Shopton lived Andy Foger, a bullying sort of a chap, who acted very
+meanly toward Tom at times. Another resident of the town was a Mr.
+Nestor, but Tom was more interested in his daughter Mary than in the
+head of the household. Add Eradicate Sampson, an eccentric colored man
+who said he got his name because he "eradicated" dirt, and his mule,
+Boomerang, and I think you have met the principal characters of these
+stories.
+</P>
+
+<P>
+After Tom had much enjoyment out of his motor-cycle, he got a motor
+boat, and one of his rivals on Lake Carlopa was this same Andy Foger,
+but our hero vanquished him. Then Tom built an airship, which had been
+the height of his ambition for some years. He had a stirring cruise in
+the Red Cloud, and then, deserting the air for the water, Tom and his
+father built a submarine, in which they went after sunken treasure. In
+the book, "Tom Swift and His Electric Runabout," I told how, in the
+speediest car on the road, Tom saved his father's bank from ruin, and
+in the book dealing with Tom's wireless message I related how he saved
+the Castaways of Earthquake Island.
+</P>
+
+<P>
+When Tom went among the diamond makers, at the request of Mr. Barco
+Jenks, and discovered the secret of phantom mountain the lad fancied
+that might be the end of his adventures, but there were more to follow.
+Going to the caves of ice, his airship was wrecked, but he and his
+friends managed to get back home, and then it was that the young
+inventor perfected his sky racer, in which he made the quickest flight
+on record.
+</P>
+
+<P>
+Most startling were his adventures in elephant land whither he went
+with his electric rifle, and he was the means of saving a missionary,
+Mr. Illingway and his wife, from the red pygmies.
+</P>
+
+<P>
+Tom had not been home from Africa long before he got a letter from this
+missionary, telling about an underground city in Mexico that was said
+to be filled with gold. Tom went there, and in the book, entitled, "Tom
+Swift in the City of Gold," I related his adventures.
+</P>
+
+<P>
+How he and his friends were followed by the Fogers, how they eluded
+them, made their way to the ruined temple in a small dirigible balloon,
+descended to the secret tunnel, managed to turn aside the underground
+river, and reach the city of gold with its wonderful gold statues&mdash;all
+this is told in the volume.
+</P>
+
+<P>
+Then, after pulling down, in the centre of the underground city, the
+big golden statue, the door of rock descended, and made our friends
+prisoners. They almost died, but Andy Foger and his father, in league
+with some rascally Mexicans and a tribe of head-hunters, finally made
+their way to the tunnel, and most unexpectedly, released Tom and his
+friends.
+</P>
+
+<P>
+There was a fight, but our hero's party escaped with considerable gold
+and safely reached Shopton. Now, after a winter spent in work, fixing
+over an old aeroplane, we again meet Tom.
+</P>
+
+<P>
+"Would you mind telling me something about where this platinum comes
+from, and if you can get any more of it?" asked Tom, after a pause,
+following the strange statement made by the Russian.
+</P>
+
+<P>
+"I will gladly tell you the story," spoke Mr. Petrofsky, "for I am much
+interested in inventions, and I formerly did something in that line
+myself, and I have even made a small aeroplane, so you see I know the
+need of platinum in a high power magneto."
+</P>
+
+<P>
+"But where did you get such pure metal?" asked Tom. "I have never seen
+it's equal."
+</P>
+
+<P>
+"There is none like it in all the world," went on the Russian, "and
+perhaps there never can be any more. I have only a small supply. But in
+Siberia&mdash;in the lost mine&mdash;there is a large quantity of it, as pure as
+this, needing only a little refining.
+</P>
+
+<P>
+"Can't we get some from there?" asked the young inventor eagerly. "I
+should think the Russian government would mine it, and export it."
+</P>
+
+<P>
+"They would&mdash;if they could find it," said Ivan Petrofsky dryly, "but
+they can't&mdash;no one can find it&mdash;and I have tried very hard&mdash;so hard, in
+fact, that it is the reason for my coming to this country&mdash;that and the
+desire to find and aid my brother, who is a Siberian exile."
+</P>
+
+<P>
+"This is getting interesting," remarked Ned to Tom in a low voice, and
+the young inventor nodded.
+</P>
+
+<P>
+"My brother Peter, who is younger than I by a few years, and I, are the
+last of our family," began Mr. Petrofsky, motioning Tom and Ned to take
+chairs. "We lived in St. Petersburg, and early in life, though we were
+of the nobility, we took up the cause of the common people."
+</P>
+
+<P>
+"Nihilists?" asked Ned eagerly, for he had read something of these
+desperate men.
+</P>
+
+<P>
+"No, and not anarchists," said Mr. Petrofsky with a sad smile. "Our
+party was opposed to violence, and we depended on education to aid our
+cause. Then, too, we did all we could in a quiet way to help the poor.
+My brother and I invented several life-saving and labor-saving machines
+and in this way we incurred the enmity of the rich contractors and
+government officials, who made more money the more people they could
+have working for them, for they made the people buy their food and
+supplies from them.
+</P>
+
+<P>
+"But my brother, and I persisted, with the result that we were both
+arrested, and, with a number of others were sent to Siberia.
+</P>
+
+<P>
+"Of the horrors we endured there I will say nothing. However, you have
+probably read much. In the country near which we were quartered there
+were many mines, some of salt and some of sulphur. Oh, the horrors of
+those mines! Many a poor exile has been lost in the windings of a salt
+mine, there to die miserably. And in the sulphur mines many die also,
+not from being lost so much as being overcome by stifling gases. It is
+terrible! And sometimes they are purposely abandoned by their guides,
+for the government wants to get rid of certain exiles.
+</P>
+
+<P>
+"But you are interested in platinum. One day my brother and I who had
+been sent to work in the salt mines, mistook a turning and wandered on
+and on for several miles, finally losing our way. We had food and water
+with us, or we would have perished, and, as it was, we nearly died
+before we finally found our way out of an abandoned opening.
+</P>
+
+<P>
+"We came out in the midst of a terrible snowstorm, and wandered about
+almost frozen. At last we were found by a serf who, in his sled, took
+us to his poor cottage. There we were warmed and fed back to life.
+</P>
+
+<P>
+"We knew we would be searched for, as naturally, our absence would lead
+to the suspicion that we had tried to escape. So as soon as we were
+able, we started back to the town where we were quartered. The serf
+wanted to take us in his sled, but we knew he might be suspected of
+having tried to aid us to get away, and he might be arrested. So we
+went alone.
+</P>
+
+<P>
+"As might have been expected, we became lost again, and wandered about
+for several days. But we had enough food to keep us alive. And it was
+during this wandering that I came upon the platinum mine. It was down
+in a valley, in the midst of a country densely wooded and very
+desolate. There was an outcropping of the ore, and rather idly I put
+some of it in my pockets. Then we wandered on, and finally after awful
+suffering in terrific storms, were found by a searching party and
+brought back to the barracks."
+</P>
+
+<P>
+"Did they think you had escaped?" asked Tom.
+</P>
+
+<P>
+"They did," replied the Russian, "and they punished us severely for it,
+in spite of our denials. In time I managed secretly to smelt the
+platinum ore, and I found I had some of the purest metal I had ever
+seen. I was wishing I could find the mine, or tell some of my friends
+about it, when one of the officers discovered the metal in my bed.
+</P>
+
+<P>
+"He demanded to know where I had gotten it, and knowing that refusal
+would only make it the worse for me I told him. There was considerable
+excitement, for the value of the discovery was recognized, and a search
+was at once made for the mine.
+</P>
+
+<P>
+"But, even with the aid we were able to give, it could not be located.
+Many expeditions went out to hunt for it but came back baffled. They
+could not penetrate that wild country."
+</P>
+
+<P>
+"They should have used an aeroplane," suggested Tom.
+</P>
+
+<P>
+"They did," replied the Russian quickly, "but it was of no use."
+</P>
+
+<P>
+"Why not?" the young inventor wanted to know.
+</P>
+
+<P>
+"Because of the terrific winds that almost continually sweep over that
+part of Siberia. They never seem to cease, and there are treacherous
+air currents and 'pockets' that engulfed more than one luckless
+aviator. Oh, you may be sure the Russian government spared no means of
+finding the lost platinum mine, but they could not locate it, or even
+get near the place where they supposed it to be.
+</P>
+
+<P>
+"Then, perhaps thinking that my brother and I were concealing
+something, they separated us. Where they sent him I do not know, but I
+was doomed to the sulphur mines. I was heartbroken, and I scarcely
+cared whether I lived or died. But an opportunity of escape came, and I
+took it. I wanted to save my brother, but I did not know where he was,
+and I thought if I could make my way to some civilized country, or to
+free America, I might later be able to save my brother.
+</P>
+
+<P>
+"I went to England, taking some of my precious platinum with me, and
+stayed there for two years. I learned your language, but my efforts to
+organize an expedition to search for the lost mine, and for my brother,
+failed. Then I came here, and&mdash;well, I am still trying."
+</P>
+
+<P>
+"My! That is certainly interesting!" exclaimed Ned, who had been all
+attention during the telling of the story.
+</P>
+
+<P>
+"And you certainly had a hard time," declared Tom. "I am much obliged
+for this platinum. Have you set a price on it? It is worth much more
+than the ordinary kind."
+</P>
+
+<P>
+"The price is nothing to you," replied the Russian, with a smile. "I am
+only too glad to help you fix your aeroplane. Will it take long? I
+should like to watch you."
+</P>
+
+<P>
+"Come along," invited Tom. "I can soon have it going again, and I'll
+give you a ride, if you like."
+</P>
+
+<P>
+"No, thank you, I'm hardly up to that yet, though I may be some day.
+The machine I made never flew well and I had several bad falls."
+</P>
+
+<P>
+Tom and Ned worked rapidly on the magneto, and soon had replaced the
+defective bits of platinum.
+</P>
+
+<P>
+"If the Russians had such a machine as this maybe they could have
+gotten to that mine," suggested Ned, who was very proud of Tom's craft.
+</P>
+
+<P>
+"It would be useless in the terrific winds, I fear," answered Ivan
+Petrofsky. "But now I care little for the mine. It is my brother whom I
+want to save. He must be in some of the Siberian mines, and if I had
+such a craft as this I might be able to rescue him."
+</P>
+
+<P>
+Tom Swift dropped the file he was using. A bright light sparkled in his
+eyes. He seemed strangely excited.
+</P>
+
+<P>
+"Mr. Petrofsky!" he cried, "would you let me have a try at finding your
+brother, and would you come with me?"
+</P>
+
+<P>
+"Would I?" asked the Russian eagerly. "I would be your debtor for life,
+and I would always pray for you, if you could help me to save my
+brother Peter."
+</P>
+
+<P>
+"Then we'll have a try at it!" cried Tom. "I've got a different airship
+than this&mdash;one in which I can travel three thousand miles without
+coming down. I haven't had any excitement since I got back from the
+city of gold. I'm going to Russia to help you rescue your brother from
+exile, and I'm also going to have a try for that lost platinum
+treasure!"
+</P>
+
+<P>
+"Thank heaven, there is some hope for poor Peter at last," murmured Mr.
+Petrofsky earnestly.
+</P>
+
+<P>
+"You never can get to the platinum mine," said Ned. "The winds will
+tear your airship to pieces."
+</P>
+
+<P>
+"Not the kind I'm going to make," declared Tom. "It's going to be an
+air glider, that will fairly live on high winds. Ho! for Siberia and
+the platinum mines. Will you come?"
+</P>
+
+<P>
+"I don't know what you mean by an air glider, Tom Swift, but I'll go to
+help rescue my brother," was the quick answer, and then, with the light
+of a daring resolve shining in his eyes, the young inventor proceeded
+to get his aeroplane in shape for the trip back to Shopton.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap03"></A>
+<H3 ALIGN="center">
+CHAPTER III
+</H3>
+
+<H3 ALIGN="center">
+THE HAND OF THE CZAR
+</H3>
+
+<P>
+"Then you won't take a ride with me to-day?" asked the young inventor,
+of the Russian, as he completed the repairs to the magneto. "I'd like
+to have you meet my father, and a friend of his, Mr. Damon. Most likely
+he'll go to Siberia with us, if his wife will let him. I'd like to talk
+some plans over with you."
+</P>
+
+<P>
+"I shall certainly call on you," answered Ivan Petrofsky, "but," he
+added with a smile, "I think I should prefer to take my first ride in
+your larger airship&mdash;the one that doesn't come down so often."
+</P>
+
+<P>
+"Well, perhaps it is a little easier on an amateur," admitted Tom. "If
+you'll come over to our house at any time I'll take you out in it, or
+I'll call for you."
+</P>
+
+<P>
+"I'll come over in a few days," answered the escaped exile. "Then I'll
+tell you all I know of the locality where the platinum mine is located,
+and we can make our plans. In the meanwhile don't say anything about
+what I have told you."
+</P>
+
+<P>
+"Why?" asked Ned quickly.
+</P>
+
+<P>
+Mr. Petrofsky approached closer to the lads, and in a low voice said:
+</P>
+
+<P>
+"I am not sure about it, but of late I think I have been shadowed. I
+have seen strange men in the village near here and they have eyed me
+rather suspiciously. Then, too, I have surprised several men around my
+house. I live here all alone, you know, and do most of my own work, a
+woman coming in occasionally to clean. But I don't like these
+suspicious characters hanging about.
+</P>
+
+<P>
+"Who do you think they are?" asked Tom.
+</P>
+
+<P>
+"I'm almost afraid to think, but from my past experience I think&mdash;nay,
+I fear&mdash;they may be spies, or agents of the Russian government."
+</P>
+
+<P>
+"Spies!" cried Ned.
+</P>
+
+<P>
+"Hush. Not so loud," cautioned Mr. Petrofsky. "They may even now be in
+hiding, especially since your aeroplane landed so near my house. They
+may see something suspicious even in that."
+</P>
+
+<P>
+"But why should the Russian government set spies on you?" asked Tom in
+a low voice.
+</P>
+
+<P>
+"For two reasons. I am an escaped exile, and I am not a citizen of the
+United States. Therefore I may be sent back to the sulphur mines. And
+another reason is that they may think I know the secret of the platinum
+treasure&mdash;the lost mine."
+</P>
+
+<P>
+"Say this is getting interesting!" exclaimed Tom. "If we are going to
+have a brush with some of the spies of the Russian government so much
+the better. I'm ready for 'em!"
+</P>
+
+<P>
+"So am I!" added Ned.
+</P>
+
+<P>
+"You don't know them," said Mr. Petrofsky, and he could not repress a
+shudder. "I hope they are not on my trail, but if they are&mdash;" he paused
+a moment, straightened himself up, and looked like what he was, a
+strong man&mdash;"if they are let them look out. I'd give my life to save my
+brother from the awful, living death to which he is consigned!"
+</P>
+
+<P>
+"And we're with you!" cried Tom, offering the Russian his hand. "We'll
+turn the trick yet. Now don't forget to come and see us. Come along,
+Ned. If I'm going to build an air glider I've got to get busy." And
+waving farewells to their new friend, the lads took their places in the
+aeroplane and were soon on their way to Shopton.
+</P>
+
+<P>
+"Well, what do you think of it?" asked Ned of his chum, as they sped
+along at a good elevation, the engine going at half speed to be less
+noisy and make talking easier.
+</P>
+
+<P>
+"Lots. I think we're in for a good time, an exciting one, anyhow, if
+what he says is true. But what in the world is an air glider, Tom?"
+</P>
+
+<P>
+"It's the last word in aeroplanes. You don't need a motor to make it
+go."
+</P>
+
+<P>
+"Don't need a motor?"
+</P>
+
+<P>
+"No, the wind does it all. It's a sort of aeroplane, but the motion
+comes from the wind, acting on different planes, and this is
+accomplished by shifting weights. In it you can stand still in a fierce
+gale, if you like."
+</P>
+
+<P>
+"How, by tying her fast on the ground?"
+</P>
+
+<P>
+"No, hovering in the air. It's all done by getting the proper balance.
+The harder the wind blows the better the air glider works, and that's
+why I think it will be just the thing for Siberia. I'm going to get
+right at work on it, and you'll help me; won't you?"
+</P>
+
+<P>
+"I sure will. Say, is platinum worth much?"
+</P>
+
+<P>
+"Worth much? I should say it was! It's got gold beat now, and the
+available supply is very small, and it's getting more scarce. Russia
+has several mines, and the metal is of good quality. I've used some
+Russian platinum, but the kind Mr. Petrofsky gave me to-day was better
+than the best I ever had. If we can only find that lost mine we'll be
+millionaires all right."
+</P>
+
+<P>
+"That's what we thought when we found the city of gold, but the gold
+wasn't of as fine a grade as we hoped."
+</P>
+
+<P>
+"Well, nothing like that can happen in this platinum deal. It sure is
+rich ore that Mr. Petrofsky and his brother found. Poor fellow! To
+think of being an exile in that awful country, not knowing where you
+may be sent next. No wonder Mr. Petrofsky wants to rescue him."
+</P>
+
+<P>
+"That's right. Well, here we are. I wonder what your father will say
+when he hears you're thinking of another expedition, Tom?"
+</P>
+
+<P>
+"Oh, he'll want me to go when he hears about the exile."
+</P>
+
+<P>
+"And I'm sure my folks will let me go. How about Mr. Damon?"
+</P>
+
+<P>
+"I don't believe we can hold him back. It will make a nice party, just
+you and I, and Mr. Damon and Mr. Petrofsky. That will leave room for
+the other Russian&mdash;if we can rescue him," and with that Tom shut off
+the engine and glided to earth.
+</P>
+
+<P>
+It may well be imagined that Mr. Swift was surprised when his son told
+him the latest news, but he did not offer any serious objection to the
+young inventor going to Siberia.
+</P>
+
+<P>
+"Only you must be careful," he said. "Those Russian officers are ugly
+when it comes to trying to take away any of their prisoners. And this
+air glider&mdash;I don't exactly know about that. It's a new machine, and
+you want to be sure it works before you trust yourself to it."
+</P>
+
+<P>
+"I will," promised Tom. "Say, I've got plenty of work ahead of me,&mdash;to
+get my big airship in shape, and build the glider. You'll have to help
+me, dad."
+</P>
+
+<P>
+"I will, son. Now tell me more about this Mr. Petrofsky." Which Tom did.
+</P>
+
+<P>
+The days that followed were indeed busy ones for Tom. The young
+inventor made a model air glider that sailed fairly well, but he knew
+it would have to work better to be successful, and he bent all his
+energies in that direction. Meanwhile Mr. Damon had been told of the
+prospective trip.
+</P>
+
+<P>
+"Bless my bank book! Of course I'll go," he said. "But don't say
+anything about it to my wife&mdash;that is, just yet. I'll bring her around
+to it gradually. She has always wanted a diamond ring set in platinum,
+and now I can get it for her. I know she'll let me go if I break it to
+her gently."
+</P>
+
+<P>
+It may be mentioned here that many valuable diamonds are now set in
+platinum instead of gold.
+</P>
+
+<P>
+"I want to keep busy," said Mr. Damon, so Tom set him, Ned and
+Eradicate at the task of getting the big airship in shape for the trip.
+This air craft has not figured in any of my previous stories, but as it
+is so nearly like the one that was crushed in the caves of ice, I will
+not give a description of it here. Those who care to may refer to the
+book telling of Tom's trip to the caves of ice for a detailed account
+of the craft.
+</P>
+
+<P>
+Sufficient to say that this latest airship, named the Falcon, was the
+largest Tom had ever built. It contained much room, many comforts, and
+could sail for several thousand miles without descending, except in
+case of accident. It was a combined dirigible balloon and aeroplane,
+and could be used as either, the necessary gas being made on board. It
+was large enough to enable the air glider to be taken on it in sections.
+</P>
+
+<P>
+It was about a week after their first meeting with him, that Ivan
+Petrofsky paid a visit to the Swift home. He was warmly welcomed by the
+aged inventor and Mr. Damon, and, closeted in the library of the house,
+he proceeded to go more into details of his own and his brother's exile
+to Siberia, and to tell about the supposed location of the lost
+platinum mine.
+</P>
+
+<P>
+"I don't believe we can start for several weeks yet," said Tom, after
+some discussion. "It will take me that long to make the glider."
+</P>
+
+<P>
+"And I, too, need a little time," said the Russian. "I will write to
+some friends in St. Petersburg and perhaps they can get some
+information for us, as to where my brother is.
+</P>
+
+<P>
+"That will be good," declared Mr. Damon. "Bless my icicle! But the more
+I think of this trip the better I like it!"
+</P>
+
+<P>
+It was arranged that the Russian should call again soon, when the plans
+would be nearer in shape, and in the meanwhile he must learn all he
+could from revolutionary friends in Siberia.
+</P>
+
+<P>
+It was a week after this, during which Tom, Ned and the others had been
+very busy, that Tom decided to take a trip to see their Russian friend.
+They had not heard from him since his visit, and Tom wanted to learn
+something about the strength of the Siberian winds.
+</P>
+
+<P>
+He and Ned went in one of the small airships and soon they were
+hovering over the grounds surrounding the lonely house where Ivan
+Petrofsky lived.
+</P>
+
+<P>
+"He doesn't seem to be at home," remarked Ned, as they descended and
+approached the dwelling.
+</P>
+
+<P>
+"No, and it looks quite deserted," agreed the young inventor. "Say, all
+the doors are open, too! He shouldn't go away and leave his house open
+like that&mdash;with the valuable platinum there."
+</P>
+
+<P>
+"Maybe he's asleep," suggested Ned.
+</P>
+
+<P>
+They knocked on the opened door, but there was no answer. Then they
+went inside. To their surprise the house was in confusion. Furniture
+was overturned, tables and chairs were broken, and papers were
+scattered about the room.
+</P>
+
+<P>
+"There's been a fight here!" cried Tom.
+</P>
+
+<P>
+"That's right," agreed Ned. "Maybe he's been hurt&mdash;maybe burglars came
+for the platinum!"
+</P>
+
+<P>
+"Come on!" cried Tom, making a dash for the stairs. "We'll see if he's
+here."
+</P>
+
+<P>
+The house was small, and it took but a moment to show that Mr.
+Petrofsky was not there. Upstairs, as below, was the same
+confusion&mdash;the overturned furniture and the papers scattered about.
+</P>
+
+<P>
+Tom stooped and picked up a scrap that looked like a piece torn from a
+letter. On top was a seal&mdash;the black seal of Russia&mdash;the imperial arms
+of the Czar!
+</P>
+
+<P>
+"Look!" cried Tom, holding out the paper.
+</P>
+
+<P>
+"What is it?" asked Ned.
+</P>
+
+<P>
+"The hand of the Czar!" answered his chum. "It has reached out from
+Russia, and taken Mr. Petrofsky away!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap04"></A>
+<H3 ALIGN="center">
+CHAPTER IV
+</H3>
+
+<H3 ALIGN="center">
+THE SEARCH
+</H3>
+
+<P>
+For a moment Ned could scarcely understand what Tom meant. It scarcely
+seemed possible that such a thing could happen. That some one in
+far-off Russia&mdash;be it the Czar or one of the secret police&mdash;could
+operate from such a distance, seeking out a man in an obscure house in
+a little American village, and snatching him away.
+</P>
+
+<P>
+"It isn't possible!" declared Ned breathlessly.
+</P>
+
+<P>
+"What difference does that make?" asked Tom. "The thing has happened,
+and you can't get out of it. Look at all the evidence&mdash;there's been a
+fight, that's sure, and Mr. Petrofsky is gone."
+</P>
+
+<P>
+"But maybe he went away of his own accord," insisted Ned, who was
+sometimes hard to convince.
+</P>
+
+<P>
+"Nonsense! If a man went away of his own accord would he smash up his
+furniture, leave his papers scattered all about and go off leaving the
+doors and windows open for any one to walk in? I guess not."
+</P>
+
+<P>
+"Well, maybe you're right. But think of it! This isn't Russia!"
+</P>
+
+<P>
+"No, but he's a Russian subject, and, by his own confession an escaped
+exile. If he was arrested in the usual way he could be taken back, and
+our government couldn't interfere. He's been taken back all right. Poor
+man! Think of being doomed to those sulphur mines again, and as he
+escaped they'll probably make it all the harder for him!"
+</P>
+
+<P>
+"But I thought our government wouldn't help other nations to get back
+prisoners convicted of political crimes," suggested Ned. "That's all
+Mr. Petrofsky was guilty of&mdash;politics, trying to help the poor in his
+own country. It's a shame if our government stands for anything like
+that!"
+</P>
+
+<P>
+"That's just the point!" exclaimed Tom. "Probably the spies, secret
+police, or whoever the Russian agents were, didn't ask any help from
+our government. If they did there might be a chance for him. But likely
+they worked in secret. They came here, sneaked in on him, and took him
+away before he could get help. Jove! If he could only have gotten word
+to me I'd have come in the airship, and then there'd be a different
+ending to this."
+</P>
+
+<P>
+"I guess you're right, Tom. Well, that ends it I suppose."
+</P>
+
+<P>
+"Ends what?"
+</P>
+
+<P>
+"Our trip to the platinum mine."
+</P>
+
+<P>
+"Not a bit of it. I'm going to have a hunt for it."
+</P>
+
+<P>
+"But how can you when Mr. Petrofsky can't go along to show us the way?
+Besides, we wanted to help rescue his brother, and now we can't."
+</P>
+
+<P>
+"Well, I'm going to make a big try," declared the young inventor
+firmly. "And the first thing I'm going to do is to get our friend out
+of the clutches of the Russian police."
+</P>
+
+<P>
+"You are? How?"
+</P>
+
+<P>
+"I'm going to make a search for him. Look here, Ned, he must have been
+taken away some time to-day&mdash;perhaps only a few hours ago&mdash;and they
+can't have gone far with him."
+</P>
+
+<P>
+"How do you make that out?" Ned wanted to know.
+</P>
+
+<P>
+"Well, I guess I'm detective enough for that," and Tom smiled. "Look
+here, the doors and windows are open. Now it rained last night, and
+there was quite a wind. If the windows had been open in the storm
+there'd be some traces of moisture in the rooms. But there isn't a
+drop. Consequently the windows have been opened since last night."
+</P>
+
+<P>
+"Say, that's so!" cried Ned admiringly.
+</P>
+
+<P>
+"But that's not all," went on Tom. "Here's a bottle of milk on the
+table, and it's fresh," which he proved by tasting it. "Now that was
+left by the milkman either late last night or early this morning. I
+don't believe it's over twelve hours old."
+</P>
+
+<P>
+"Well, what does this mean?" asked Ned, who couldn't quite follow Tom's
+line of reasoning.
+</P>
+
+<P>
+"To my mind it means that the spies were here no later than this
+morning. Look at the table upset, the dishes on the floor. Here's one
+with oatmeal in it, and you know how hard and firm cooked oatmeal gets
+after it stands a bit. This is quite fresh, and soft, and&mdash;"
+</P>
+
+<P>
+"And that means&mdash;" interrupted Ned, who was in turn interrupted by Tom,
+who exclaimed:
+</P>
+
+<P>
+"It means that Mr. Petrofsky was at breakfast when they burst in on
+him, and took him away. They had hard work overpowering him, I'll
+wager, for he could put up a pretty good fight. And the broken
+furniture is evidence of that. Then the spies, after tying him up, or
+putting him in a carriage, searched the house for incriminating papers.
+That's as plain as the nose on your face. Then the police agents, or
+whoever they were, skipped out in a hurry, not taking the trouble to
+close the windows and doors."
+</P>
+
+<P>
+"I believe it did happen that way," agreed Ned, who clearly saw what
+Tom meant. "But what can we do? How can we find him?"
+</P>
+
+<P>
+"By getting on the trail," answered his chum quickly. "There may be
+more clews in the house, and I'm sure there'll be some out of doors,
+for they must have left footprints or the marks of carriage wheels.
+We'll take a look, and then we'll get right on the search. I'm not
+going to let them take Mr. Petrofsky to Russia if I can help it. I want
+to get after that platinum, and he's the only one who can pilot us
+anywhere near the place; and besides, there's his brother we've got to
+rescue. We'll make a search for the exile."
+</P>
+
+<P>
+"I'm with you!" cried Ned. "Jove! Wouldn't it be great if we could
+rescue him? They can't have gotten very far with him."
+</P>
+
+<P>
+"I'm afraid they have quite a start on us," admitted Tom with a dubious
+shake of his head, "but as long as they're in the United States we have
+a chance. If ever they get him on Russian soil it's all up with him."
+</P>
+
+<P>
+"Come on then!" cried Ned. "Let's get busy. What's the first thing to
+do?"
+</P>
+
+<P>
+"Look for clews," replied Tom. "We'll begin at the top of the house and
+work down. It's lucky we came when we did, for every minute counts."
+</P>
+
+<P>
+Then the two plucky lads began their search for the kidnapped Russian
+exile. Had those who took him away seen the mere youths who thus
+devoted themselves to the task, they might have laughed in contempt,
+but those who know Tom Swift and his sturdy chum, know that two more
+resourceful and brave lads would be hard to find.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap05"></A>
+<H3 ALIGN="center">
+CHAPTER V
+</H3>
+
+<H3 ALIGN="center">
+A CLEW FROM RUSSIA
+</H3>
+
+<P>
+"Nothing much up here," remarked Tom, when he and Ned had gone all over
+the second floor twice. "That scrap of paper, which put me on to the
+fact that some one from the Russian government had been here, is about
+all. They must have taken all the documents Mr. Petrofsky had."
+</P>
+
+<P>
+"Maybe he didn't have any," suggested Ned.
+</P>
+
+<P>
+"If he was wise he'd get rid of them when he knew he was being
+shadowed, as he told us. Perhaps that was why they broke up the
+furniture, searching for hidden papers, or they may have done it out of
+spite because they didn't find anything. But we might as well go
+downstairs and look there."
+</P>
+
+<P>
+But the first floor was equally unproductive of clews, save those
+already noted, which showed, at least so Tom believed, that Mr.
+Petrofsky had been surprised and overpowered while at breakfast.
+</P>
+
+<P>
+"Now for outside!" cried the young inventor. "We'll see if we can
+figure out how they got him away."
+</P>
+
+<P>
+There were plenty of marks in the soft ground and turf, which was still
+damp from the night's rain, though it was now afternoon. Unfortunately,
+however, in approaching the house after leaving the aeroplane, Ned and
+Tom had not thought to exercise caution, and, not suspecting anything
+wrong, they had stepped on a number of footprints left by the
+kidnappers.
+</P>
+
+<P>
+But for all that, they saw enough to convince them that several men had
+been at the lonely house, for there were many marks of shoes. It was
+out of the question, however, to tell which were those of Mr. Petrofsky
+and which those of his captors.
+</P>
+
+<P>
+"They might have carried him out to a carriage they had in waiting,"
+suggested Ned. "Let's go out to the front gate and look in the road.
+They hardly would bring the carriage up to the door."
+</P>
+
+<P>
+"Good idea," commented Tom, and they hurried to the main thoroughfare
+that passed the Russian's house.
+</P>
+
+<P>
+"Here they are!" cried Ned, who was in the lead. "There's been a
+carriage here as sure as you're a foot high and it's a rubber-tired one
+too."
+</P>
+
+<P>
+"GOOD!" cried Tom admiringly. "You're coming right along in your
+detective training. How do you make that out?"
+</P>
+
+<P>
+"See here, where a piece of rubber has been broken or cut out of the
+tire. It makes a peculiar mark in the dirt every time the wheel goes
+around."
+</P>
+
+<P>
+"That's right, and it will be a good thing to trace the carriage by.
+Come on, we'll keep right after it."
+</P>
+
+<P>
+"Hold on a bit," suggested Ned, who, though not so quick as Tom Swift,
+frequently produced good results by his very slowness. "Are you going
+off and leave the airship here for some one to walk off with?"
+</P>
+
+<P>
+"Guess they wouldn't take it far," replied the young inventor, "but I'd
+better make it safe. I'll disconnect it so they can't start it, though
+if Andy Foger happens to come along he might slash the planes just out
+of spite. But I guess he won't show up."
+</P>
+
+<P>
+Tom took a connecting pin out of the electrical apparatus, making it
+impossible to start the aeroplane, and then, wheeling it out of sight
+behind a small barn, he and Ned went back to the carriage marks in the
+road.
+</P>
+
+<P>
+"Hurry!" urged Tom, as he started off in the direction of the village
+of Hurdtown, near where the cottage stood. "We will ask people living
+along the highway if they've seen a carriage pass."
+</P>
+
+<P>
+"But what makes you think they went off that way?" asked Ned. "I should
+think they'd head away from the village, so as not to be seen."
+</P>
+
+<P>
+"No, I don't agree with you. But wait, we'll look at the marks. Maybe
+that will help us."
+</P>
+
+<P>
+Peering carefully at the marks of horses' hoofs and the wheel
+impressions, Tom uttered a cry of discovery.
+</P>
+
+<P>
+"I have it!" he declared. "The carriage came from the village, and kept
+right on the other way. You're right, Ned. They didn't go back to town.
+</P>
+
+<P>
+"Are you sure?"
+</P>
+
+<P>
+"Of course. You can see for yourself; if the carriage had turned around
+the track would show, but it doesn't and, even if they turned on the
+grass, there'd be two lines of marks&mdash;one coming out here and one
+returning. As it is there is only a single set&mdash;just as if the carriage
+drove up here, took on its load, and continued on. This way, Ned."
+</P>
+
+<P>
+They hurried down the road, and soon came to a cluster of farm houses.
+Inquiries there, however, failed to bring anything to light, for either
+the occupants of the house had failed to notice passing vehicles, or
+there had been so many that any particular carriage was not recalled.
+And there were now so many impressions in the soft dirt of the
+highway&mdash;so many wheel tracks and hoof imprints&mdash;that it was impossible
+to pick out those of the carriage with the cut rubber tire. "Well, I
+guess it isn't of much use to go on any farther," spoke Ned, when they
+had traveled several miles and had learned nothing.
+</P>
+
+<P>
+"We'll try one more house, and then go back," agreed Tom. "We'll tell
+dad about what's happened, and see what he says."
+</P>
+
+<P>
+"Carriage?" repeated an old farmer to whom they next put the question.
+"Wa'al, now, come t' think of it, I did see one drivin' along here
+early this morning. It had rubber tires on too, for I recollect
+remarkin' t' myself that it didn't make much noise. Had t' talk t'
+myself," he added in explanation, "'cause nobody else in the family was
+up, 'ceptin' th' dog."
+</P>
+
+<P>
+"Did the carriage have some Russians in it?" asked Tom eagerly, "and
+was one a big bearded man?"
+</P>
+
+<P>
+"Wa'al, now you've got me," admitted the farmer frankly. "It was quite
+early you see, and I didn't take no particular notice. I got up early
+t' do my milkin' 'cause I have t' take it t' th' cheese factory. That's
+th' reason nobody was up but me. But I see this carriage comin' down
+th' road, and thinks I t' myself it was pretty middlin' early fer
+anybody t' be takin' a pleasure ride. I 'lowed it were a pleasure ride,
+'cause it were one of them hacks that folks don't usually use 'ceptin'
+fer a weddin', or a funeral, an' it wa'n't no funeral."
+</P>
+
+<P>
+"Then you can't tell us anything more except that it passed?" asked Ned.
+</P>
+
+<P>
+"No, I couldn't see inside, 'cause it was rather dark at that hour, and
+then, too, I noticed that they had th' window shades down."
+</P>
+
+<P>
+"That's suspicious!" exclaimed Tom. "I believe they are the fellows we're
+after," and, without giving any particulars he said that they were
+looking for a friend who might have been taken away against his will.
+</P>
+
+<P>
+"Could you tell where they were going?" asked Tom, scarcely hoping to
+get an affirmative answer.
+</P>
+
+<P>
+"Wa'al, th' man on th' seat pulled up when he see me," spoke the farmer
+with exasperating slowness, "an' asked me how far it was t' th'
+Waterville station, an' I told him."
+</P>
+
+<P>
+"Why didn't you say so at first?" asked Tom quickly. "Why didn't you
+tell us they were heading for the railroad?"
+</P>
+
+<P>
+"You didn't ask me," replied the farmer. "What difference does it make."
+</P>
+
+<P>
+"Every minute counts!" exclaimed the young inventor. "We want to keep
+right after those fellows. Maybe the agent can tell us where they
+bought tickets to, and we can trace them that way.
+</P>
+
+<P>
+"Shouldn't wonder," commented the farmer. "There ain't many trains out
+from Waterville at that time of day, an' mighty few passengers.
+Shouldn't wonder but Jake Applesauer could put ye on th' trail."
+</P>
+
+<P>
+"Much obliged," called Tom. "Come on, Ned," and he started back in the
+direction of the house where the kidnapping had taken place.
+</P>
+
+<P>
+"That ain't th' way t' 'vaterville!" the farmer shouted after them.
+</P>
+
+<P>
+"I know it, we're going to get our airship," answered Tom, and then he
+heard the farmer mutter.
+</P>
+
+<P>
+"Plumb crazy! That's what they be! Plumb crazy! Going after their
+airship! Shouldn't wonder but they was escaped lunatics, and the other
+fellers was keepers after 'em. Hu! Wa'al, I've got my work to do.
+'Tain't none of my affair."
+</P>
+
+<P>
+"Let him think what he likes," commented Ned as he and his chum hurried
+on. "We're on the trail all right."
+</P>
+
+<P>
+If Jake Applesauer, the agent at the Waterville station, was surprised
+at seeing two youths drop down out of an aeroplane, and begin
+questioning him about some suspicious strangers that had taken the
+morning train, he did not show it. Jake prided himself on not being
+surprised at anything, except once when he took a counterfeit dollar in
+return for a ticket, and had to make it good to the company.
+</P>
+
+<P>
+But, to the despair of Tom and Ned, he could not help them much. He had
+seen the party, of course. They had driven up in the hack, and one of
+the men seemed to be sick, or hurt, for his head was done up in
+bandages, and the others had to half carry him on the train.
+</P>
+
+<P>
+"That was Mr. Petrofsky all right," declared Ned.
+</P>
+
+<P>
+"Sure," assented Tom. "They must have hurt and drugged him. But you
+can't tell us for what station they bought tickets, Mr. Applesauer?"
+</P>
+
+<P>
+"No, for they didn't buy any. They must have had 'em, or else they paid
+on the train. One man drove off in the coach, and that's all I know."
+</P>
+
+<P>
+As Tom and Ned started back to Shopton in the aeroplane they discussed
+what could be done next. A hard task lay before them, and they realized
+that.
+</P>
+
+<P>
+"They could have gotten off at any station between here and New York,
+or even changed to another railroad at the junction," spoke Tom. "It's
+going to be a hard job."
+</P>
+
+<P>
+"Guess we'll have to get some regular detectives on it," suggested Ned.
+</P>
+
+<P>
+"And that's what I'll do," declared the young inventor. "They may be
+able to locate Mr. Petrofsky before those spies take him out of this
+country. If they don't&mdash;it will be too late. I'm going to talk to dad
+about it, and if he agrees I'll hire the best private detectives."
+</P>
+
+<P>
+Mr. Swift gave his consent when Tom had told the story, and, a day
+later, one of the best detectives of a well known agency called on Tom
+in Shopton and assumed charge of the case.
+</P>
+
+<P>
+The early reports from the detective were quite reassuring. He got on
+the trail of the men who had taken Mr. Petrofsky away, and confirmed
+the suspicion that they were agents of the Russian police. He trailed
+them as far as New York, and there the clews came to an end.
+</P>
+
+<P>
+"Whether they are in the big city, which might easily be, or in some of
+the nearby towns, will take some time to learn," the detective wrote,
+and Tom wired back telling him to keep on searching.
+</P>
+
+<P>
+But, as several weeks went by, and no word came, even Tom began to give
+up hope, though he did not stop work on the air glider, which was
+nearing completion. And then, most unexpectedly a clew came&mdash;a clew
+from far-off Russia.
+</P>
+
+<P>
+Tom got a letter one day&mdash;a letter in a strange hand, the stamp and
+postmark showing that it had come from the land of the Czar.
+</P>
+
+<P>
+"What do you suppose it contains?" asked Ned, who was with his chum
+when the communication was received.
+</P>
+
+<P>
+"Haven't the least idea; but I'll soon find out."
+</P>
+
+<P>
+"Maybe it's from the Russian police, telling you to keep away from
+Siberia."
+</P>
+
+<P>
+"Maybe," answered Tom absently, for he was reading the missive. "I
+say!" he suddenly cried. "This is great! A clew at last, and from St.
+Petersburg! Listen to this, Ned!
+</P>
+
+<P>
+"This letter is from the head of one of the secret societies over
+there, a society that works against the government. It says that Mr.
+Petrofsky is being detained a prisoner in a lonely hut on the Atlantic
+sea coast, not far from New York&mdash;Sandy Hook the letter says&mdash;and here
+are the very directions how to get there!"
+</P>
+
+<P>
+"No!" cried Ned, in disbelief. "How in the world could anybody in
+Russia know that."
+</P>
+
+<P>
+"It tells here," said Tom. "It's all explained. As soon as the secret
+police got Mr. Petrofsky they communicated with the head officials in
+St. Petersburg. You know nearly everyone is a spy over there, and the
+letter says that Mr. Petrofsky's friends there soon heard the news, and
+even about the exact place where he is being held."
+</P>
+
+<P>
+"What are they holding him for?" asked Ned.
+</P>
+
+<P>
+"That's explained, too. It seems they can't legally take him back until
+certain papers are received from his former prison in Siberia, and
+those are now on the way. His friends write to me to hasten and rescue
+him."
+</P>
+
+<P>
+"But how did they ever get your address?"
+</P>
+
+<P>
+"That's easy, though you wouldn't think so. It seems, so the letter
+explains, that as soon as Mr. Petrofsky got acquainted with us he wrote
+to friends in St. Petersburg, giving my address, and telling them, in
+case anything ever happened to him, to notify us. You see he suspected
+that something might, after he found he was being shadowed that way.
+</P>
+
+<P>
+"And it all worked out. As soon as his friends heard that he was
+caught, and learned where he was being held, they wrote to me. Hurrah,
+Ned! A clew at last! Now to wire the detective&mdash;no, hold on, we'll go
+there and rescue him ourselves! We'll go in the airship, and pick up
+Detective Trivett in New York."
+</P>
+
+<P>
+"That's the stuff! I'm with you!"
+</P>
+
+<P>
+"Bless my suspender buttons! So am I, whatever it is!" cried Mr. Damon,
+entering the room at that moment.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap06"></A>
+<H3 ALIGN="center">
+CHAPTER VI
+</H3>
+
+<H3 ALIGN="center">
+RESCUING MR. PETROFSKY
+</H3>
+
+<P>
+"We ought to be somewhere near the place now, Tom."
+</P>
+
+<P>
+"I think we are, Ned. But you know I'm not going too close in this
+airship."
+</P>
+
+<P>
+"Bless my silk hat!" exclaimed Mr. Damon. "I hope we don't have to walk
+very far in such a deserted country as this, Tom Swift."
+</P>
+
+<P>
+"We'll have to walk a little way, Mr. Damon," replied the young
+inventor. "If I go too close to the hut they'll see the airship, and as
+those spies probably know that Mr. Petrofsky has been dealing with me,
+They'd smell a rat at once, and run away, taking him with them, and
+we'd have all our work to do over again."
+</P>
+
+<P>
+"That's right," agreed Detective Trivett, who was one of the four in
+the airship that was now hovering over the Atlantic coast, about ten
+miles below the summer resorts of which Asbury Park was one.
+</P>
+
+<P>
+It was only a few hours after Tom had received the letter from Russia
+informing him of the whereabouts of the kidnapped Russian, and he had
+acted at once.
+</P>
+
+<P>
+His father sanctioned the plan of going to the rescue in one of Tom's
+several airships and, Mr. Damon, having been on hand, at once agreed to
+go. Of course Ned went along, and they had picked up the private
+detective in New York, where he was vainly seeking a clew to the
+whereabouts of Mr. Petrofsky.
+</P>
+
+<P>
+Now the young inventor and his friends were hovering over the sandy
+stretch of coast that extends from Sandy Hook down the Atlantic
+seaboard. They were looking for a small fishing hamlet on the outskirts
+of which, so the Russian letter stated, was situated the lonely hut in
+which Mr. Petrofsky was held a prisoner.
+</P>
+
+<P>
+"Do you think you can pick it out from a distance, Tom?" asked Mr.
+Damon, as the airship floated slowly along. It was not the big one they
+intended taking on their trip to Siberia, but it was sufficiently large
+to accommodate the four and leave room for Mr. Petrofsky, should they
+succeed in rescuing him.
+</P>
+
+<P>
+"I think so," answered the young inventor.
+</P>
+
+<P>
+In the letter from Russia a comparatively accurate description of the
+prisoner's hut had been given, and also some details about his guards.
+For there is little goes on in political circles in the realm of the
+Czar that is not known either to the spies of the government or those
+of the opposition, and the latter had furnished Tom with reliable
+information.
+</P>
+
+<P>
+"That looks like the place," said Tom at length, when, after peering
+steadily through a powerful telescope, during which time Ned steered
+the ship, the young inventor "picked up" a fishing settlement. "There
+is the big fish house, spoken of in the letter," he went on, "and the
+Russians know a lot about fish. That house makes a good landmark. We'll
+go down now, before they have a chance to see us."
+</P>
+
+<P>
+The others thought this a good idea, and a little later the airship
+sank to the ground amid a lonely stretch of sand dunes, about two miles
+from the hamlet on the outskirts of which the prison hut was said to be
+located.
+</P>
+
+<P>
+"Now," said Tom, "we've got to decide on a plan of campaign. It won't
+do for all of us to go to the hut and make the rescue. Some one has got
+to stay with the airship, to be ready to start it off as soon as we
+come back with Mr. Petrofsky&mdash;if we do come.
+</P>
+
+<P>
+"Then there's no use in me staying here," spoke Detective Trivett. "I
+don't know enough even to turn on the gasolene."
+</P>
+
+<P>
+"No, it's got to be Ned or me," said the young inventor.
+</P>
+
+<P>
+"I'll stay," volunteered Ned quickly, for though he would very much
+have liked to be in at the rescue, he realized that his place was in
+the airship, as Mr. Damon was not sufficiently familiar with the
+machinery to operate it.
+</P>
+
+<P>
+Accordingly, after looking to everything to see that it was in working
+order, Tom led the advance. It was just getting dusk, and they figured
+on getting to the hut after dark.
+</P>
+
+<P>
+"Have everything ready for a quick start," Tom said to Ned, "for we may
+come back running."
+</P>
+
+<P>
+"I will," was the prompt answer, and then, getting their bearings, the
+little party set off.
+</P>
+
+<P>
+They had to travel over a stretch of sandy waste that ran along the
+beach. Back in shore were a few scattered cottages, and not yet opened
+for the summer, and on the ocean side was the pounding surf. The hut,
+as Tom recalled the directions, lay just beyond a group of stunted
+hemlock trees that set a little way back from the ocean, on a bluff
+overlooking the sea. It was not near any other building.
+</P>
+
+<P>
+Slowly, and avoiding going any nearer the other houses than they could
+help, the little party made its way. They had to depend on their own
+judgement now, for the minor details of the location of the hut could
+not be given in the letter from Russia. In fact the spies themselves,
+in writing to their head officers about the matter, had not described
+the location in detail.
+</P>
+
+<P>
+"That looks like it over there," said Tom at last, when they had gone
+about a mile and a half, and saw a lonely hut with a light burning in
+it.
+</P>
+
+<P>
+Cautiously they approached and, as they drew nearer, they saw that the
+light came through the window of a small hut.
+</P>
+
+<P>
+"Looks like the place," commented the detective.
+</P>
+
+<P>
+"We'll have a look," remarked Tom.
+</P>
+
+<P>
+He crept up so he could glance in the window, and no sooner had he
+peered in, than he motioned for the others to approach.
+</P>
+
+<P>
+Looking under a partly-drawn curtain, Mr. Damon and Mr. Trivett saw the
+Russian whom they sought. He was seated at a table, his head bowed on
+his hands, and in the room were three men. A rifle stood in one corner,
+near one of the guards.
+</P>
+
+<P>
+"They're taking no chances," whispered Mr. Damon. "What shall we do,
+Tom?"
+</P>
+
+<P>
+"It's three to three," replied the young inventor. "But if we can get
+him away without a fight, so much the better. I think I have it. I'll
+go up to the door, knock and make quite a racket, and demand admittance
+in the name of the Czar. That will startle them, and they may all three
+rush to answer. Mr. Damon, you and the detective will stay by the
+window. As soon as you see the men rush for the door, smash in the
+window with a piece of driftwood and call to Mr. Petrofsky to jump out
+that way. Then you can run with him toward the airship, and I'll
+follow. It may work."
+</P>
+
+<P>
+"I don't see why it wouldn't," declared the detective. "Go ahead, Tom.
+We're ready."
+</P>
+
+<P>
+Looking in once more, to make sure that the guards were not aware of
+the presence of the rescuing party, Tom went to the front door of the
+hut. It was a small building, evidently one used by fishermen.
+</P>
+
+<P>
+Tom knocked loudly on the portal, at the same time crying out in a
+voice that he strove to make as deep and menacing as possible:
+</P>
+
+<P>
+"Open! Open in the name of the Czar!"
+</P>
+
+<P>
+Looking through the window, ready to act on the instant, Mr. Damon and
+the detective saw the three guards spring to their feet. One remained
+near Mr. Petrofsky, who also leaped up.
+</P>
+
+<P>
+"Now!" called the detective to his companion. "Smash the window!"
+</P>
+
+<P>
+The next instant a big piece of driftwood crashed through the casement,
+just as the two men were hurrying to the front door to answer Tom's
+summons.
+</P>
+
+<P>
+"Mr. Petrofsky! This way!" yelled Mr. Damon, sticking his head in
+through the broken sash. "Come out! We've come to save you! Bless my
+putty blower, but this is great! Come on!"
+</P>
+
+<P>
+For a moment the exile stared at the head thrust through the broken
+window, and he listened to Tom's emphatic knocks and demands. Then with
+a cry of delight the Russian sprang for the open casement, while the
+guard that had remained near him made a leap to catch him, crying out:
+</P>
+
+<P>
+"Betrayed! Betrayed! It's the Nihilists! Look out, comrades!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap07"></A>
+<H3 ALIGN="center">
+CHAPTER VII
+</H3>
+
+<H3 ALIGN="center">
+THE AIR GLIDER
+</H3>
+
+<P>
+Mr. Damon continued to hammer away at the window sash with the piece of
+driftwood. There were splinters of the frame and jagged pieces of glass
+sticking out, making it dangerous for the exile to slip through.
+</P>
+
+<P>
+"Come on! Come on!" the eccentric man continued to call. "Bless my
+safety valve! We'll save you! Come on!"
+</P>
+
+<P>
+Mr. Petrofsky was leaping across the room, just ahead of the one guard.
+The other two were at the open door now, through which Tom could be
+seen. Then the spies, realizing in an instant that they had been
+deceived, made a dash after their comrade, who had his hand on the
+tails of the exile's coat.
+</P>
+
+<P>
+"Break away! Break loose!" cried Mr. Damon, who, by this time had
+cleared the window so a person could get through. "Don't let them hold
+you!"
+</P>
+
+<P>
+"I don't intend to!" retorted Mr. Petrofsky, and he swerved suddenly,
+tearing his coat, from the grasp of the guard.
+</P>
+
+<P>
+In another instant the exile was at the casement, and was being helped
+through by Mr. Damon, and there was need of it, for the three guards
+were there now, doing their best to keep their prisoner.
+</P>
+
+<P>
+"Pull away! Pull away!" cried Mr. Damon.
+</P>
+
+<P>
+"We'll help you!" shouted Tom, who, now that his trick had worked, had
+sped around to the other side of the hut.
+</P>
+
+<P>
+"Don't be afraid, we're with you!" exclaimed the detective, who was
+with the young inventor.
+</P>
+
+<P>
+"Grab him! Keep him! Hold him!" fairly screamed the rearmost of the
+three guards. "It is a plot of the Nihilists to rescue him. Shoot him,
+comrades. He must not get away!"
+</P>
+
+<P>
+"Don't you try any of your shooting games, or I'll take a hand in it!"
+shouted the detective, and, at the same moment he drew his revolver and
+fired harmlessly in the air.
+</P>
+
+<P>
+"A bomb! A bomb!", yelled the guards in terror.
+</P>
+
+<P>
+"Not yet, but there may be!" murmured Tom. The firing of the shot
+produced a good effect, for the three men who were trying to detain
+Ivan Petrofsky at once fell back from the window and gave him just the
+chance needed. He scrambled through, with the aid of Mr. Damon, and
+before the guards could again spring at him, which they did when the
+echoes of the shot had died away. They had realized, too late, that it
+was not a bomb, and that there was no immediate danger for them.
+</P>
+
+<P>
+"Come on!" cried Tom. "Make for the airship! We've got to get the start
+of them!"
+</P>
+
+<P>
+Leading the way, he sprinted toward the road that led to the place
+where the airship awaited them. He was followed by Mr. Damon and the
+detective, who had Mr. Petrofsky between them.
+</P>
+
+<P>
+"Are you all right?" Tom called back to the exile. "Are you hurt? Can
+you run?"
+</P>
+
+<P>
+"I'm all right," was the reassuring answer. "Go ahead; But they'll be
+right after us."
+</P>
+
+<P>
+"Maybe they'll stop when they see this," remarked the detective
+significantly, and he held his revolver so that the rays of the
+newly-risen moon glinted on it.
+</P>
+
+<P>
+"Here they come!" cried Tom a moment later, as three figures, one after
+the other, came around the corner of the house. They had not taken the
+shorter route through the window, as had Mr. Petrofsky, and this gained
+a little time for our friends.
+</P>
+
+<P>
+"Stop! Hold on!" cried one of the guards in fairly good English. "That
+is our prisoner."
+</P>
+
+<P>
+"Not any more!" the young inventor yelled back. "He's ours now."
+</P>
+
+<P>
+"Look out! They're going to shoot!" cried Mr. Damon. "Bless my
+gunpowder! can't you stop them some way or other, Mr. Detective?"
+</P>
+
+<P>
+"The only way is by firing first," answered Mr. Trivett, "and I don't
+want to hurt them. Guess I'll fire in the air again."
+</P>
+
+<P>
+He did, and the guards halted. They seemed to be holding a
+consultation, as Tom learned by glancing hastily back, and he caught
+the glisten of some weapon. But if the three men had any notion of
+firing they gave it up, and once more came on running. Doubtless they
+had orders to get their prisoner back to Russia alive, and did not want
+to take any chances of hitting him.
+</P>
+
+<P>
+"Leg it!" cried Tom. "Leg it!"
+</P>
+
+<P>
+He was well ahead, and wanted the others to catch up to him, but none
+of the men was a good runner, and Mr. Petrofsky, by reason of being
+rather heavily built, was worse than the other two, so they had to
+accommodate their pace to his.
+</P>
+
+<P>
+"I wonder if we can make it," mused Tom, as he realized that the
+airship was a good distance off yet the guards, though quite a way in
+the rear now were coming on fast. "It's going to be a close race,"
+thought the young inventor. "I wish we'd brought the airship a little
+nearer."
+</P>
+
+<P>
+It was indeed a race now, for the guards, seeming to know that they
+would not be shot at, were coming on more confidently, and were rapidly
+lessening the distance that separated them from their recent prisoner.
+</P>
+
+<P>
+"We've got to go faster!" cried Tom.
+</P>
+
+<P>
+"Bless my shoe leather!" yelled Mr. Damon. "I can't go any faster."
+</P>
+
+<P>
+Still he did make the attempt, and so did the exile and the detective.
+Little was said now, for each of the parties was running a dogged race,
+and in silence. They had gone possibly half a mile, and the first
+advantage of Tom and his friends was rapidly being lost, when suddenly
+there sounded in the air above a curious throbbing noise.
+</P>
+
+<P>
+"Bless my gasolene! What's that?" cried Mr. Damon.
+</P>
+
+<P>
+"The airship! It's the airship!" yelled Tom, as he saw a great dark
+shape slowly approaching. "Ned is bringing her to meet us."
+</P>
+
+<P>
+"Good!" cried the detective. "We need it I'm about winded!"
+</P>
+
+<P>
+"This way, Ned! This way!" cried Tom, and, an instant later, they were
+in the midst of a brilliant glow, for Ned had turned the current into
+the great searchlight on the bow of the air craft, and the beams were
+focused on our friends. Ned could now see the refugees, and in a moment
+he sent the graceful craft down, bringing it to a halt on the ground
+near Tom.
+</P>
+
+<P>
+"In with you!" cried the lad. "She's all ready to start up again!"
+</P>
+
+<P>
+"Come on!" yelled Tom to the others. "We're all right now, if you
+hustle!"
+</P>
+
+<P>
+"Bless my pin cushion!" gasped Mr. Damon, making a final spurt.
+</P>
+
+<P>
+The three guards had halted in confusion on seeing the big, black bulk
+of the airship, and when they noted the gleaming of the searchlight
+they must have realized that their chances were gone. They made a rush,
+however, but it was too late. Over the side of the craft scrambled Tom,
+Mr. Damon, the detective and Ivan Petrofsky, and an instant later Ned
+had sent it aloft. The race was over, and the young inventor and his
+friends had won.
+</P>
+
+<P>
+"You're the stuff!" cried Tom to Ned, as he went with his chum to the
+pilot house to direct the progress of the airship. "It's lucky you came
+for us. We never could have made the distance. We left the ship too far
+off."
+</P>
+
+<P>
+"That's what I thought after you'd gone," replied his chum. "So I
+decided to come and meet you. I had to go slowly so as not to pass you
+in the darkness."
+</P>
+
+<P>
+They were speeding off now, and Ned, turning the beams of the great
+searchlight below them, picked up the three guards who were gazing
+helplessly aloft after their fast disappearing prisoner.
+</P>
+
+<P>
+"You're having your first ride in an airship, Mr. Petrofsky," remarked
+Tom, when they had gone on for some little distance. "How do you like
+it?"
+</P>
+
+<P>
+"I'm so excited I hardly know, but it's quite a sensation. But how in
+the world did you ever find me to rescue me?"
+</P>
+
+<P>
+Then they told the story of their search, and the unexpected clew from
+Russia. In turn the exile told how he had been attacked at the
+breakfast table one morning by the three spies&mdash;the very men who had
+been shadowing him&mdash;and taken away secretly, being drugged to prevent
+his calling for help. He had been kept a close prisoner in the lonely
+hut, and each day he had expected to be taken back to serve out his
+sentence in Siberia.
+</P>
+
+<P>
+"Another day would have been too late," he told Tom, when he had
+thanked the young inventor over and over again, "for the papers would
+have arrived, and the last obstacle to taking me back to Russia would
+have been removed. They dared not take me out of the United States
+without official documents, and they would have been forged ones, for
+they intended trumping up a criminal charge against me, the political
+one not being strong enough to allow them to extradite me."
+</P>
+
+<P>
+"Well I'm glad we got you," said Tom heartily. "We will soon be ready
+to start for Siberia."
+</P>
+
+<P>
+"In this kind of a craft?"
+</P>
+
+<P>
+"Yes, only much larger. You'll like it. I only hope my air glider
+works."
+</P>
+
+<P>
+By putting on speed, Tom was able to reach Shopton before midnight, and
+there was quite an informal celebration in the Swift homestead over the
+rescue of the exile. The detective, for whom there was no further need,
+was paid off, and Mr. Petrofsky was made a member of the household.
+</P>
+
+<P>
+"You'd better stay here until we are ready to start," Tom said, "and
+then we can keep an eye on you. We need you to show us as nearly as
+possible where the platinum field is."
+</P>
+
+<P>
+"All right," agreed the Russian with a laugh. "I'm sure I'll do all I
+can for you, and you are certainly treating me very nicely after what I
+suffered from my captors."
+</P>
+
+<P>
+Tom resumed work on his air glider the next day, and he had an
+additional helper, for Mr. Petrofsky proved to be a good mechanic.
+</P>
+
+<P>
+In brief, the air glider was like an aeroplane save that it had no
+motor. It was raised by a strong wind blowing against transverse
+planes, and once aloft was held there by the force of the air currents,
+just like a box kite is kept up. To make it progress either with or
+against the wind, there were horizontal and vertical rudders, and
+sliding weights, by which the equilibrium could be shifted so as to
+raise or lower it. While it could not exactly move directly against the
+wind it could progress in a direction contrary to which the gale was
+blowing, somewhat as a sailing ship "tacks."
+</P>
+
+<P>
+And, as has been explained, the harder the wind blew the better the air
+glider worked. In fact unless there was a strong gale it would not go
+up.
+</P>
+
+<P>
+"But it will be just what is needed out there in that part of Siberia,"
+declared the exile, "for there the wind is never quiet. Often it blows
+a regular hurricane."
+</P>
+
+<P>
+"That's what we want!" cried Tom. He had made several models of the air
+glider, changing them as he found out his errors, and at last he had
+hit on the right shape and size.
+</P>
+
+<P>
+Midway of the big glider, on which work was now well started, there was
+to be an enclosed car for the carrying of passengers, their food and
+supplies. Tom figured on carrying five or six.
+</P>
+
+<P>
+For several weeks the work on the air glider progressed rapidly, and it
+was nearing completion. Meanwhile nothing more had been heard or seen
+of the Russian spies.
+</P>
+
+<P>
+"Well," announced Tom one night, after a day's hard work, "we'll be
+ready for a trial now, just as soon as there comes a good wind."
+</P>
+
+<P>
+"Is it all finished?" asked Ned.
+</P>
+
+<P>
+"No, but enough for a trial spin. What I want is a big wind now."
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap08"></A>
+<H3 ALIGN="center">
+CHAPTER VIII
+</H3>
+
+<H3 ALIGN="center">
+IN A GREAT GALE
+</H3>
+
+<P>
+There was a humming in the air. The telegraph wires that ran along on
+high poles past the house of Tom Swift sung a song like that of an
+Aeolian harp. The very house seemed to tremble.
+</P>
+
+<P>
+"Jove! This is a wind!" cried Tom as he awakened on a morning a few
+days after his air glider was nearly completed. "I never saw it so
+strong. This ought to be just what I want I must telephone to Mr.
+Damon and to Ned."
+</P>
+
+<P>
+He hustled into his clothes, pausing now and then to look out of his
+window and note the effects of the gale. It was a tremendous wind, as
+was evidenced by the limbs of several trees being broken off, while in
+some cases frail trees themselves had been snapped in twain.
+</P>
+
+<P>
+"Coffee ready, Mrs. Baggert?" asked our hero as he went downstairs. "I
+haven't got time to eat much though."
+</P>
+
+<P>
+In spite of his haste Tom ate a good breakfast and then, having
+telephoned to his two friends, and receiving their promises to come
+right over, our hero went out to make a few adjustments to his air
+glider, to get it in shape for the trial.
+</P>
+
+<P>
+He was a little worried lest the wind die out, but when he got outside
+he noted with satisfaction that the gale was stronger than at first. In
+fact it did considerable damage in Shopton, as Tom learned later.
+</P>
+
+<P>
+It certainly was a strong wind. An ordinary aeroplane never could have
+sailed in it, and Tom was doubtful of the ability of even his big
+airship to navigate in it. But he was not going to try that.
+</P>
+
+<P>
+"And maybe my air glider won't work," he remarked to himself as he was
+on his way to the shed where it had been constructed. "The models went
+up all right, but maybe the big one isn't proportioned right. However,
+I'll soon see."
+</P>
+
+<P>
+He was busy adjusting the balancing weights when Ned Newton came in.
+</P>
+
+<P>
+"Great Scott!" exclaimed the lad, as he labored to close the shed door,
+"this is a blow all right, Tom! Do you think it's safe to go up?"
+</P>
+
+<P>
+"I can't go up without a gale, Ned."
+</P>
+
+<P>
+"Well, I'd think twice about it myself."
+</P>
+
+<P>
+"Why, I counted on you going up with me."
+</P>
+
+<P>
+"Burr-r-r-r!" and Ned pretended to shiver. "I haven't an accident
+insurance policy you know."
+</P>
+
+<P>
+"You won't need it, Ned. If we get up at all we'll be all right. Catch
+hold there, and shift that rear weight a little forward on the rod. I
+expect Mr. Damon soon."
+</P>
+
+<P>
+The eccentric man came in a little later, just as Tom and Ned had
+finished adjusting the mechanism.
+</P>
+
+<P>
+"Bless my socks!" cried Mr. Damon. "Do you really mean to go up to-day,
+Tom?"
+</P>
+
+<P>
+"I sure do! Why, aren't you going with me?" and Tom winked at Ned.
+</P>
+
+<P>
+"Bless my&mdash;" began Mr. Damon, and then, evidently realizing that he was
+being tested he exclaimed: "Well, I will go, Tom! If the air glider is
+any good it ought to hold me. I will go up."
+</P>
+
+<P>
+"Now, Ned, how about you?" asked the young inventor.
+</P>
+
+<P>
+"Well, I guess it's up to me to come along, but I sure do wish it was
+over with," and Ned glanced out of the window to see if the gale was
+dying out. But the wind was as high as ever.
+</P>
+
+<P>
+It was hard work getting the air glider out of the shed, and in
+position on top of a hill, about a quarter of a mile away, for Tom
+intended "taking off" from the mound, as he could not get a running
+start without a motor. The wind, however, he hoped, would raise him and
+the strange craft.
+</P>
+
+<P>
+In order to get it over the ground without having it capsize, or
+elevate before they were ready for it, drag ropes, attached to bags of
+sand were used, and once these were attached the four found that they
+could not wheel the air glider along on its bicycle wheels.
+</P>
+
+<P>
+"We'll have to get Eradicate and his mule, I guess," said Tom, after a
+vain endeavor to make progress against the wind. "When it's up in the
+air it will be all right, but until then I'll need help to move it.
+Ned, call Rad, will you?"
+</P>
+
+<P>
+The colored man, with Boomerang, his faithful mule, was soon on hand.
+The animal was hitched to the glider, and pulled it toward the hill.
+</P>
+
+<P>
+"Now to see what happens," remarked Tom as he wheeled his latest
+invention around where the wind would take it as soon as the
+restraining ropes were cast off, for it was now held in place by
+several heavy cables fastened to stakes driven in the ground.
+</P>
+
+<P>
+Tom gave a last careful look to the weights, planes and rudders. He
+glanced at a small anemometer or wind gage, on the craft, and noted
+that it registered sixty miles an hour.
+</P>
+
+<P>
+"That ought to do," he remarked. "Now who's going up with me? Will you
+take a chance, Mr. Petrofsky?"
+</P>
+
+<P>
+"I'd rather not&mdash;at first."
+</P>
+
+<P>
+"Come on then, Ned and Mr. Damon. Mr. Petrofsky and Rad can cast off
+the ropes."
+</P>
+
+<P>
+The wind, if anything, was stronger than ever. It was a terrific gale,
+and just what was needed. But how would the air glider act? That was
+what Tom wanted very much to know.
+</P>
+
+<P>
+"Cast off!" he cried to the Russian and Eradicate, and they slipped the
+ropes.
+</P>
+
+<P>
+The next moment, with a rush and whizzing roar, the air glider shot
+aloft on the wings of the wind.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap09"></A>
+<H3 ALIGN="center">
+CHAPTER IX
+</H3>
+
+<H3 ALIGN="center">
+THE SPIES
+</H3>
+
+<P>
+"We're certainly going up!" yelled Ned, as he sat beside Tom in the
+cabin of the air glider.
+</P>
+
+<P>
+"That's right!" agreed the young inventor rather proudly, as he grasped
+two levers, one of which steered the craft, the other being used to
+shift the weights. "We're going up. I was pretty sure of that. The next
+thing is to see if it will remain stationary in the air, and answer the
+rudder."
+</P>
+
+<P>
+"Bless my top knot!" cried Mr. Damon. "You don't mean to tell me you
+can stand still in a gale of wind, Tom Swift."
+</P>
+
+<P>
+"That's exactly what I do mean. You can't do it in an aeroplane, for
+that depends on motion to keep itself up in the air. But the glider is
+different. That's one of its specialties, remaining still, and that's
+why it will be valuable if we ever get to Siberia. We can hover over a
+certain spot in a gale of wind, and search about below with telescopes
+for a sign of the lost platinum mine.
+</P>
+
+<P>
+"How high are you going up?" demanded Ned, for the air glider was still
+mounting upward on a slant. If you ever scaled a flat piece of tin, or
+a stone, you'll remember how it seems to slide up a hill of air, when
+it was thrown at the right angle. It was just this way with the air
+glider&mdash;it was mounting upward on a slant.
+</P>
+
+<P>
+"I'm going up a couple of hundred feet at least," answered Tom, "and
+higher if the gale-strata is there. I want to give it a good test while
+I'm at it."
+</P>
+
+<P>
+Ned looked down through a heavy plate of glass in the floor of the
+cabin, and could see Mr. Petrofsky and Eradicate looking up at them.
+</P>
+
+<P>
+"Bless my handkerchief!" cried Mr. Damon, when his attention had been
+called to this. "It's just like an airship."
+</P>
+
+<P>
+"Except that we haven't a bit of machinery on board," said Tom. "These
+weights do everything," and he shifted them forward on the sliding
+rods, with the effect that the air glider dipped down with a startling
+lurch.
+</P>
+
+<P>
+"We're falling!" cried Ned.
+</P>
+
+<P>
+"Not a bit of it," answered Tom. "I only showed you how it worked. By
+sliding the weights back we go up."
+</P>
+
+<P>
+He demonstrated this at once, sending his craft sliding up another hill
+of air, until it reached an elevation of four hundred feet, as
+evidenced by the barograph.
+</P>
+
+<P>
+"I guess this is high enough," remarked Tom after a bit. "Now to see if
+she'll stand still."
+</P>
+
+<P>
+Slowly he moved the weights along, by means of the compound levers,
+until the air glider was on an "even keel" so to speak. It was still
+moving forward, with the wind now, for Tom had warped his wing tips.
+</P>
+
+<P>
+"The thing to do," said the young inventor, "is to get it exactly
+parallel with the wind-strata, so that the gale will blow through the
+two sets of planes, just as the wind blows through a box kite. Only we
+have no string to hold us from moving. We have to depend on the
+equalization of friction on the surfaces of the wings. I wonder if I
+can do it."
+</P>
+
+<P>
+It was a delicate operation, and Tom had not had much experience in
+that sort of thing, for his other airships and aeroplanes worked on an
+entirely different principle. But he moved the weights along, inch by
+inch, and flexed the tips, planes and rudders until finally Ned, who
+was looking down through the floor window, cried out:
+</P>
+
+<P>
+"We're stationary!"
+</P>
+
+<P>
+"Good!" exclaimed Tom. "Then it's a success."
+</P>
+
+<P>
+"And we can go to Siberia?" added Mr. Damon.
+</P>
+
+<P>
+"Sure," assented the young inventor. "And if we have luck we'll rescue
+Mr. Petrofsky's brother, and get a lot of platinum that will be more
+valuable than gold."
+</P>
+
+<P>
+It would not be true to say that the air glider was absolutely
+stationary. There was a slight forward motion, due to the fact that it
+was not yet perfected, and also because Tom was not expert enough in
+handling it.
+</P>
+
+<P>
+The friction on the plane surfaces was not equalized, and the gale
+forced the craft along slightly. But, compared to the terrific power of
+the wind, the air glider was practically at a standstill, and this was
+remarkable when one considers the force of the hurricane that was
+blowing above, below and through it.
+</P>
+
+<P>
+For actually that was what the hurricane was doing. It was as if an
+immense box kite was suspended in the air, without a string to hold it
+from moving, and as though a cabin was placed amidships to hold human
+beings.
+</P>
+
+<P>
+"This sure is great!" cried Ned. "Have you got her in control, Tom?"
+</P>
+
+<P>
+"I think so. I'll try and see how she works."
+</P>
+
+<P>
+By shifting the weights, changing the balance, and warping the wings,
+the young inventor sent the craft higher up, made it dip down almost to
+the earth, and then swoop upward like some great bird. Then he turned
+it completely about and though he developed no great speed in this test
+made it progress quarteringly against the wind.
+</P>
+
+<P>
+"It's almost perfect," declared Tom. "A few touches and she'll be all
+right."
+</P>
+
+<P>
+"Is it all right?" asked Ivan Petrofsky anxiously, as the three left
+the cabin, and Eradicate hitched his mule to the glider to take it back
+to the shed.
+</P>
+
+<P>
+"I see where it can be improved," he said, as they made ready to
+descend. "I'll soon have it in shape."
+</P>
+
+<P>
+"Then we can go to Siberia?"
+</P>
+
+<P>
+"In less than a month. The big airship needs some repairs, and then
+we'll be off."
+</P>
+
+<P>
+The Russian said nothing, but he looked his thanks to Tom, and the
+manner in which he grasped the hand of our hero showed his deep
+feelings.
+</P>
+
+<P>
+The glider was given several more trials, and each time it worked
+better. Tom decided to change some of the weights, and he devoted all
+his time to this alteration, while Ned, Mr. Damon, and the others
+labored to get the big airship in shape for the long trip to the land
+of the exiles.
+</P>
+
+<P>
+So anxious was Tom to get started, that he put in several nights
+working on the glider. Ned occasionally came over to help him, while
+Mr. Damon was on hand as often as his wife would allow. Mr. Petrofsky
+spent his nights writing to friends in Russia, hoping to get some clew
+as to the whereabouts of his brother.
+</P>
+
+<P>
+It was on one of these nights, when Tom and Ned were laboring hard,
+with Eradicate to help them that an incident occurred which worried
+them all not a little. Tom was adjusting some of the new weights on the
+sliding rods, and called to Ned:
+</P>
+
+<P>
+"I say, old man, hand me that big monkey wrench, will you. I can't
+loosen this nut with the small one. You'll find it on the bench by that
+back window."
+</P>
+
+<P>
+As Ned went to get the tool he looked from the casement. He started,
+stood staring through the glass for a moment into the outer darkness,
+and then cried out:
+</P>
+
+<P>
+"Tom, we're being watched! There are some spies outside!"
+</P>
+
+<P>
+"What?" exclaimed the young inventor "Where are they? Who are they?"
+</P>
+
+<P>
+"I don't know. Those Russian police, maybe out front, and maybe we can
+catch them!"
+</P>
+
+<P>
+Grabbing up the big monkey wrench, Ned made a dash for the large
+sliding doors, followed by Tom who had an iron bar, and Eradicate with
+a small pair of pliers.
+</P>
+
+<P>
+"By golly!" cried the colored man, "ef I gits 'em I'll pinch dere noses
+off!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap10"></A>
+<H3 ALIGN="center">
+CHAPTER X
+</H3>
+
+<H3 ALIGN="center">
+OFF IN THE AIRSHIP
+</H3>
+
+<P>
+Going from the brightly lighted shop into the darkness of the night,
+illuminated as it was only by the stars, neither Tom, Ned, nor
+Eradicate, could see anything at first. They had to stand still for a
+moment to accustom their eyes to the gloom.
+</P>
+
+<P>
+"Can you see them?" cried Tom to his chum.
+</P>
+
+<P>
+"No, but I can hear them! Over this way!" yelled Ned, and then, being
+able to dimly make out objects, so he would not run into them, he
+started off, followed by the young inventor.
+</P>
+
+<P>
+Tom could hear several persons running away now, but he could see no
+one, and from the sound he judged that the spies, if such they were,
+were hurrying across the fields that surrounded the shop.
+</P>
+
+<P>
+It was almost a hopeless task to pursue them, but the two lads were not
+the kind that give up. They rushed forward, hoping to be able to
+grapple with those who had looked in the shop window, but it was not to
+be.
+</P>
+
+<P>
+The sound of the retreating footsteps became more and more faint, until
+finally they gave no clew to follow.
+</P>
+
+<P>
+"Better stop," advised Tom. "No telling where we'll end up if we keep
+on running. Besides it might be dangerous."
+</P>
+
+<P>
+"Dangerous; how?" panted Ned.
+</P>
+
+<P>
+"They might dodge around, and wait for us behind some tree or bush."
+</P>
+
+<P>
+"An' ef dat Foger feller am around he jest as soon as not fetch one ob
+us a whack in de head," commented Eradicate grimly.
+</P>
+
+<P>
+"Guess you're about right," admitted Ned. "There isn't much use keeping
+on. We'll go back."
+</P>
+
+<P>
+"What sort of fellows were they?" asked Tom, when, after a little
+further search, the hunt was given up. "Could you see them well, Ned?"
+</P>
+
+<P>
+"Not very good. Just as I went to get you that wrench I noticed two
+faces looking in the window. I must have taken them by surprise, for
+they dodged down in an instant. Then I yelled, and they ran off."
+</P>
+
+<P>
+"Did you see Andy Foger?"
+</P>
+
+<P>
+"No, I didn't notice him."
+</P>
+
+<P>
+"Was either of them one of the spies who had Mr. Petrofsky in the hut?"
+</P>
+
+<P>
+"I didn't see those fellows very well, you remember, so I couldn't say."
+</P>
+
+<P>
+"That's so, but I'll bet that's who they were."
+</P>
+
+<P>
+"What do you think they're after, Tom?"
+</P>
+
+<P>
+"One of two things. They either want to get our Russian friend into
+their clutches again, or they're after me&mdash;to try to stop me from going
+to Siberia."
+</P>
+
+<P>
+"Do you think they'd go to such length as that?"
+</P>
+
+<P>
+"I'm almost sure they would. Those Russian police are wrong, of course,
+but they think Mr. Petrofsky is an Anarchist or something like that,
+and they think they're justified in doing anything to get him back to
+the Siberian mines. And once the Russian government sets out to do a
+thing it generally does it&mdash;I'll give 'em credit for that."
+</P>
+
+<P>
+"But how do you suppose they know you're going to Russia?"
+</P>
+
+<P>
+"Say, those fellows have ways of getting information you and I would
+never dream of. Why, didn't you read the other day how some fellow who
+was supposed to be one of the worst Anarchists ever, high up in making
+bombs, plotting, and all that sort of thing&mdash;turned out to be a police
+spy? They get their information that way. I shouldn't be surprised but
+what some of the very people whom Mr. Petrofsky thinks are his friends
+are spies, and they send word to headquarters of every move he makes."
+</P>
+
+<P>
+"Why don't you warn him?"
+</P>
+
+<P>
+"He knows it as well as I do. The trouble is you can't tell who the
+spies are until it's too late. I'm glad I'm not mixed up in that sort
+of thing. If I can get to Siberia, help Mr. Petrofsky rescue his
+brother, and get hold of some of that platinum I'll be satisfied. Then
+I won't go back to the land of the Czar, once I get away from there."
+</P>
+
+<P>
+"That's right. Well, let's go back and work on the glider."
+</P>
+
+<P>
+"And we'll have Eradicate patrolling about the shop to make sure we're
+not spied on again."
+</P>
+
+<P>
+"By golly! Ef I sees any oh 'em, I suah will pinch 'em!" cried the
+colored man, as he clicked the pliers.
+</P>
+
+<P>
+But there was no further disturbance that night, and, when Tom and Ned
+ceased work, they had made good progress toward finishing the air
+glider.
+</P>
+
+<P>
+The big airship was almost ready to be given a trial flight, with her
+motors tuned up to give more power, and as soon as the Russian exile
+had a little more definite information as to the possible whereabouts
+of his brother, they could start.
+</P>
+
+<P>
+In the days that followed Tom and his friends worked hard. The air
+glider was made as nearly perfect as any machine is, and in a fairly
+stiff gale, that blew up about a week later, Tom did some things in it
+that made his friends open their eyes. The young inventor had it under
+nearly as good control as he had his dirigible balloons or aeroplanes.
+</P>
+
+<P>
+The big airship, too, was made ready for the long voyage, extra large
+storage tanks for gasolene being built in, as it was doubtful if they
+could get a supply in Siberia without arranging for it in advance, and
+this they did not want to do. Besides there was the long ocean flight
+to provide for.
+</P>
+
+<P>
+"But if worst comes to worst I can burn kerosene in my motor," Tom
+explained, for he had perfected an attachment to this end. "You can get
+kerosene almost anywhere in Russia."
+</P>
+
+<P>
+At last word was received from Russia, from some Revolutionist friends
+of the exile, stating that his brother was supposed to be working in a
+certain sulphur mine north of the Iablonnoi mountains, and half way
+between that range and the city of Iakutsk.
+</P>
+
+<P>
+"But it might be a salt mine, just as well," said Mr. Petrofsky, when
+he told the boys the news. "Information about the poor exiles is hard
+to get."
+</P>
+
+<P>
+"Well, we'll take a chance!" cried Tom determinedly.
+</P>
+
+<P>
+The preparations went on, and by strict watchfulness none of the spies
+secured admission to the shop where the air glider was being finished.
+The big airship was gotten in shape for the voyage, and then, after a
+final trial of the glider, it was taken apart and put aboard the
+Falcon, ready for use on the gale-swept plains of Siberia.
+</P>
+
+<P>
+The last of the stores, provisions and supplies were put in the big car
+of the airship, a route had been carefully mapped out, and Tom, after
+saying good-bye to Mary Nestor, his father, the housekeeper, and
+Eradicate, took his place in the pilot house of the airship one
+pleasant morning at the beginning of Summer.
+</P>
+
+<P>
+"Don't you wish you were going, Rad?" the young inventor asked, for the
+colored man had decided to stay at home.
+</P>
+
+<P>
+"No indeedy, Massa Tom," was the answer. "Dat's a mighty cold country
+in Shebeara, an' I laik warm wedder."
+</P>
+
+<P>
+"Well, take care of yourself and Boomerang," answered Tom with a laugh.
+Then he pulled the lever that sent a supply of gas into the big bag,
+and the ship began to rise.
+</P>
+
+<P>
+"I guess we've given those spies the slip," remarked Ned, as they rose
+from the ground calling good-byes to the friends they left behind.
+</P>
+
+<P>
+"I hope so," agreed Tom, but could he have seen two men, of sinister
+looks, peering at the slowly-moving airship from the shelter of a glove
+of trees, not far off, he might have changed his opinion, and so would
+Ned.
+</P>
+
+<P>
+Then, as the airship gathered momentum, it fairly sprang into the air,
+and a moment later, the big propellers began revolving. They were off
+on their long voyage to find the lost platinum mine, and rescue the
+exile of Siberia.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap11"></A>
+<H3 ALIGN="center">
+CHAPTER XI
+</H3>
+
+<H3 ALIGN="center">
+A STORM AT SEA
+</H3>
+
+<P>
+Tom had the choice of two routes in making his voyage to far-off
+Siberia. He could have crossed the United States, sailed over the
+Pacific ocean, and approached the land of the Czar from the western
+coast above Manchuria. But he preferred to take the Atlantic route,
+crossing Europe, and so sailing over Russia proper to get to his
+destination. There were several reasons for this.
+</P>
+
+<P>
+The water voyage was somewhat shorter, and this was an important
+consideration when there was no telling when he might have an accident
+that would compel him to descend. On the Atlantic he knew there would
+be more ships to render assistance if it was needed, although he hoped
+he would not have to ask for it.
+</P>
+
+<P>
+"Then, too," he said to Ned, when they were discussing the matter, "we
+will have a chance to see some civilized countries if we cross Europe,
+and we may land near Paris."
+</P>
+
+<P>
+"Paris!" cried Ned. "What for?"
+</P>
+
+<P>
+"To renew our supply of gasolene, for one thing," replied the young
+inventor. "Not that we will be out when we arrive, but if we take on
+more there we may not have to get any in Russia. Besides, they have a
+very good quality in France, so all told, I think the route over Europe
+to be the best."
+</P>
+
+<P>
+Ned agreed with him, and so did Mr. Petrofsky. As for Mr. Damon, he was
+so busy getting his sleeping room in order, and blessing everything he
+could think of, that he did not have time to talk much. So the eastern
+route was decided on, and as the big airship, carrying our friends,
+their supplies, and the wonderful air glider rose higher and higher,
+Tom gradually brought her around so that the pointed nose of the gas
+bag aimed straight across the Atlantic.
+</P>
+
+<P>
+They were over the ocean on the second day out, for Tom did not push
+the craft to her limit of speed, now they had time to consider matters
+at their leisure, for they had been rather hurried on leaving.
+</P>
+
+<P>
+The machinery was working as nearly to perfection as it could be
+brought, and Tom, after finding out that his craft would answer equally
+well as a dirigible balloon or an aeroplane, let it sail along as the
+latter.
+</P>
+
+<P>
+"For," he said, "we have a long trip ahead of us and we need to save
+all the elevating gas we can save. If worst comes to worst, and we
+can't navigate as an aeroplane any more, we can even drift along as a
+dirigible. But while we have the gasolene we might as well make speed
+and be an aeroplane."
+</P>
+
+<P>
+The others agreed with him, and so it was arranged. Tom, when he had
+seen to it that his craft was working well, let Ned take charge and
+devoted himself to seeing that all the stores and supplies were in
+order for quick use.
+</P>
+
+<P>
+Of course, until they were nearer the land of the Czar, and that part
+of Siberia where Mr. Petrofsky's brother was held as an exile, they
+could do little save make themselves as comfortable as possible in the
+airship. And this was not hard to do.
+</P>
+
+<P>
+Naturally, in a craft that had to carry a heavy load, and lift itself
+into the air, as well as propel itself along, not many things could be
+taken. Every ounce counted. Still our friends were not without their
+comforts. There was a well stocked kitchen, and Mr. Damon insisted on
+installing himself as cook. This had been Eradicate's work but the
+eccentric man knew how to do almost everything from making soup to
+roasting a chicken, and he liked it. So he was allowed free run of the
+galley.
+</P>
+
+<P>
+Tom and Ned spent much time in the steering tower or engine room, for,
+though all of the machinery was automatic, there was need of almost
+constant attention, though there was an arrangement whereby in case of
+emergency, the airship would steer herself in any set direction for a
+certain number of hours.
+</P>
+
+<P>
+There were ample sleeping quarters for six persons, a living room and a
+dining saloon. In short the Falcon was much like Tom's Red Cloud, only
+bigger and better. There was even a phonograph on board so that music,
+songs, and recitations could be enjoyed.
+</P>
+
+<P>
+"Bless my napkin! but this is great!" exclaimed Mr. Damon, about noon
+of the second day, when they had just finished dinner and looked down
+through the glass windows in the bottom of the cabin at the rolling
+ocean below them. "I don't believe many persons have such opportunities
+as we have."
+</P>
+
+<P>
+"I'm sure they do not," added Mr. Petrofsky. "I can hardly think it
+true, that I am on my way back to Siberia to rescue my dear brother."
+</P>
+
+<P>
+"And such good weather as we're having," spoke Ned. "I'm glad we didn't
+start off in a storm, for I don't exactly like them when we're over the
+water."
+</P>
+
+<P>
+"We may get one yet," said Tom. "I don't just like the way the
+barometer is acting. It's falling pretty fast."
+</P>
+
+<P>
+"Bless my mercury tube!" cried Mr. Damon. "I hope we have no bad luck
+on this trip."
+</P>
+
+<P>
+"Oh, we can't help a storm or two," answered Tom. "I guess it won't do
+any harm to prepare for it."
+</P>
+
+<P>
+So everything was made snug, and movable articles on the small exposed
+deck of the airship were lashed fast. Then, as night settled down, our
+friends gathered about in the cheerful cabin, in the light of the
+electric lamps, and talked of what lay before them.
+</P>
+
+<P>
+As Mr. Damon could steer as well as Tom or Ned, he shared in the night
+watch. But Mr. Petrofsky was not expert enough to accept this
+responsibility.
+</P>
+
+<P>
+It was when Mr. Damon finished his watch at midnight, and called Tom,
+that he remarked.
+</P>
+
+<P>
+"Bless my umbrella, Tom. But I don't like the looks of the weather."
+</P>
+
+<P>
+"Why, what's it doing?"
+</P>
+
+<P>
+"It isn't doing anything, but it's clouding up and the barometer is
+going down."
+</P>
+
+<P>
+"I was afraid we were in for it," answered the young inventor. "Well,
+we'll have to take what comes."
+</P>
+
+<P>
+The airship plunged on her way, while her young pilot looked at the
+various gages, noting that to hold her way against the wind that had
+risen he would have to increase the speed of the motor.
+</P>
+
+<P>
+"I don't like it," murmured Tom, "I don't like it," and he shook his
+head dubiously.
+</P>
+
+<P>
+With a suddenness that was almost terrifying, the storm broke over the
+ocean about three o'clock that morning. There was a terrific clap of
+thunder, a flash of lighting, and a deluge of rain that fairly made the
+staunch Falcon stagger, high in the air as she was.
+</P>
+
+<P>
+"Come on, Ned!" cried Tom, as he pressed the electric alarm bell
+connected with his chum's berth. "I need you, and Mr. Damon, too."
+</P>
+
+<P>
+"What's the matter?" cried Ned, awakened suddenly from a sound sleep.
+</P>
+
+<P>
+"We're in a bad storm," answered Tom, "and I'll have to have help. We
+need more gas, to try and rise above it."
+</P>
+
+<P>
+"Bless my hanging lamp!" cried Mr. Damon, "I hope nothing happens!"
+</P>
+
+<P>
+And he jumped from his berth as the Falcon plunged and staggered
+through the storm that was lashing the ocean below her into white
+billow of foam.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap12"></A>
+<H3 ALIGN="center">
+CHAPTER XII
+</H3>
+
+<H3 ALIGN="center">
+AN ACCIDENT
+</H3>
+
+<P>
+For a few moments it seemed as if the Falcon would surely turn turtle
+and plunge into the seething ocean. The storm had burst with such
+suddenness that Tom, who was piloting his air craft, was taken
+unawares. He had not been using much power or the airship would have
+been better able to weather the blast that burst with such fury over
+her. But as it was, merely drifting along, she was almost like a great
+sheet of paper. Down she was forced, until the high-flying spray from
+the waves actually wet the lower part of the car, and Ned, looking
+through one of the glass windows, saw, in the darkness, the
+phosphorescent gleam of the water so near to them.
+</P>
+
+<P>
+"Tom!" he cried in alarm. "We're sinking!"
+</P>
+
+<P>
+"Bless my bath sponge! Don't say that!" gasped Mr. Damon.
+</P>
+
+<P>
+"That's why I called you," yelled the young inventor. "We've got to
+rise above the storm if possible. Go to the gas machine, Ned, and turn
+it on full strength. I'll speed up the motor, and we may be able to cut
+up that way. But get the gas on as soon as you can. The bag is only
+about half full. Force in all you can!
+</P>
+
+<P>
+"Mr. Damon, can you take the wheel? It doesn't make any difference
+which way we go as long as you keep her before the wind, and yank back
+the elevating rudder as far as she'll go! We must head up."
+</P>
+
+<P>
+"All right, Tom," answered the eccentric man, as he fairly jumped to
+take the place of the young inventor at the helm.
+</P>
+
+<P>
+"Can I do anything?" asked the Russian, as Tom raced for the engine
+room, to speed the motor up to the last notch.
+</P>
+
+<P>
+"I guess not. Everything is covered, unless you want to help Mr. Damon.
+In this blow it will be hard to work the rudder levers."
+</P>
+
+<P>
+"All right," replied Ivan Petrofsky, and then there came another
+sickening roll of the airship, that threatened to turn her completely
+over.
+</P>
+
+<P>
+"Lively!" yelled Tom, clinging to various supports as he made his way
+to the engine room. "Lively, all hands, or we'll be awash in another
+minute!"
+</P>
+
+<P>
+And indeed it seemed that this might be so, for with the wind forcing
+her down, and the hungry waves leaping up, as if to clutch her to
+themselves, the Falcon was having anything but an easy time of it.
+</P>
+
+<P>
+It was the work of but an instant however, when Tom reached the engine
+room, to jerk the accelerator lever toward him, and the motor responded
+at once. With a low, humming whine the wheels and gears redoubled their
+speed, and the great propellers beat the air with fiercer strokes.
+</P>
+
+<P>
+At the same time Tom heard the hiss of the gas as it rushed into the
+envelope from the generating machine, as Ned opened the release valve.
+</P>
+
+<P>
+"Now we ought to go up," the young inventor murmured, as he anxiously
+watched the barograph, and noted the position of the swinging pendulum
+which told of the roll and dip of the air craft.
+</P>
+
+<P>
+For a moment she hung in the balance, neither the increased speed of
+the propellers, nor the force of the gas having any seeming effect. Mr.
+Damon and the Russian, clinging to the rudder levers, to avoid being
+dashed against the sides of the pilot house, held them as far back as
+they could, to gain the full power of the elevation planes. But even
+this seemed to do no good.
+</P>
+
+<P>
+The power of the gale was such, that, even with the motor and gas
+machine working to their limit, the Falcon only held her own. She swept
+along, barely missing the crests of the giant waves.
+</P>
+
+<P>
+"She's got to go up! She's got to go up!" cried Tom desperately, as if
+by very will power he could send her aloft. And then, when there came a
+lull in the fierce blowing of the wind, the elevation rudder took hold,
+and like a bird that sees the danger below, and flies toward the
+clouds, the airship shot up suddenly.
+</P>
+
+<P>
+"That's it!" cried Tom in relief, as he noted the needle of the
+barograph swinging over, indicating an ever-increasing height. "Now
+we're safe."
+</P>
+
+<P>
+They were not quite yet, but at last the power of machinery had
+prevailed over that of the elements. Through the pelting rain, and amid
+the glare of the lightning, and the thunder of heaven's artillery, the
+airship forced her way, up and up and up.
+</P>
+
+<P>
+Setting the motor controller to give the maximum power until he
+released it, Tom hastened to the gas-generating apparatus. He found Ned
+attending to it, so that it was now working satisfactorily.
+</P>
+
+<P>
+"How about it, Tom?" cried his chum anxiously.
+</P>
+
+<P>
+"All right now, Ned, but it was a close shave! I thought we were done
+for, platinum mine, rescue of exiles, and all."
+</P>
+
+<P>
+"So did I. Shall I keep on with the gas?"
+</P>
+
+<P>
+"Yes, until the indicator shows that the bag is full. I'm going to the
+pilot house."
+</P>
+
+<P>
+Running there, Tom found that Mr. Damon and the Russian had about all
+they could manage. The young inventor helped them and then, when the
+Falcon was well started on her upward course, Tom set the automatic
+steering machine, and they had a breathing spell.
+</P>
+
+<P>
+To get above the sweep of the blast was no easy task, for the wind
+strata seemed to be several miles high, and Tom did not want to risk an
+accident by going to such an elevation. So, when having gone up about a
+mile, he found a comparatively calm area he held to that, and the
+Falcon sped along with the occupants feeling fairly comfortable, for
+there was no longer that rolling and tumbling motion.
+</P>
+
+<P>
+The storm kept up all night, but the danger was practically over,
+unless something should happen to the machinery, and Tom and Ned kept
+careful watch to prevent this. In the morning they could look down on
+the storm-swept ocean below them, and there was a feeling of
+thankfulness in their hearts that they were not engulfed in it.
+</P>
+
+<P>
+"This is a pretty hard initiation for an amateur," remarked Mr.
+Petrofsky. "I never imagined I should be as brave as this in an airship
+in a storm."
+</P>
+
+<P>
+"Oh, you can get used to almost anything," commented Mr. Damon.
+</P>
+
+<P>
+It was three days before the storm blew itself out and then came
+pleasant weather, during which the Falcon flew rapidly along. Our
+friends busied themselves about many things, talked of what lay before
+them, and made such plans as they could.
+</P>
+
+<P>
+It was the evening of the fifth day, and they expected to sight the
+coast of France in the morning. Tom was in the pilot house, setting the
+course for the night run, and Ned had gone to the engine room to look
+after the oiling of the motor.
+</P>
+
+<P>
+Hardly had he reached the compartment than there was a loud report, a
+brilliant flash of fire, and the machinery stopped dead.
+</P>
+
+<P>
+"What is it?" cried Tom, as he came in on the run, for the indicators
+in the pilot house had told him something was wrong.
+</P>
+
+<P>
+"An accident!" cried Ned. "A breakdown, Tom! What shall we do?"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap13"></A>
+<H3 ALIGN="center">
+CHAPTER XIII
+</H3>
+
+<H3 ALIGN="center">
+SEEKING A QUARREL
+</H3>
+
+<P>
+There was an ominous silence in the engine room, following the flash
+and the report. The young inventor took in every bit of machinery in a
+quick glance, and he saw at once that the main dynamo and magneto had
+short-circuited, and gone out of commission. Almost instantly the
+airship began to sink, for the propellers had ceased revolving.
+</P>
+
+<P>
+"Bless my barograph!" cried Mr. Damon, appearing on the scene. "We're
+sinking, Tom!"
+</P>
+
+<P>
+"It's all right," answered our hero calmly. "It's a bad accident, and
+may delay us, but there's no danger. Ned, start up the gas machine,"
+for they were progressing as an aeroplane then. "Start that up, and
+we'll drift along as a dirigible."
+</P>
+
+<P>
+"Of course! Why didn't I think of that!" exclaimed Ned, somewhat
+provoked at his own want of thought. The airship was going down
+rapidly, but it was the work of but a moment to start the generator,
+and then the earthward motion was checked.
+</P>
+
+<P>
+"We'll have to take our chance of being blown to France," remarked Tom,
+as he went over to look at the broken electrical machinery. "But we
+ought to fetch the coast by morning with this wind. Lucky it's blowing
+our way."
+</P>
+
+<P>
+"Then you can't use the propellers?" asked Mr. Petrofsky.
+</P>
+
+<P>
+"No," replied Tom, "but if we get to France I can easily repair this
+break. It's the platinum bearings again. I do hope we'll locate that
+lost mine, for I need a supply of good reliable metal.
+</P>
+
+<P>
+"Then we'll have to land in France?" asked the Russian, and he seemed a
+trifle uneasy.
+</P>
+
+<P>
+"Yes," answered Tom. "Don't you want to?"
+</P>
+
+<P>
+"Well, I was thinking of our safety."
+</P>
+
+<P>
+"Bless my silk hat!" cried Mr. Damon. "Where is the danger of landing
+there? I rather hoped we could spend some time in Paris."
+</P>
+
+<P>
+"There is no particular danger, unless it becomes known that I am an
+escaped exile, and that we are on our way to Siberia to rescue another
+one, and try to find the platinum mine. Then we would be in danger."
+</P>
+
+<P>
+"But how are they to know it?" asked Ned, who had come back from the
+gas machine.
+</P>
+
+<P>
+"France, especially in Paris and the larger cities, is a hot-bed of
+political spies," answered Mr. Petrofsky. "Russia has many there on the
+secret police, and while the objectors to the Czar's government are
+also there, they could do little to help us."
+</P>
+
+<P>
+"I guess they won't find out about us unless we give it away," was
+Tom's opinion.
+</P>
+
+<P>
+"I'm afraid they will," was the reply of the Russian. "Undoubtedly word
+has been cabled by the spies who annoyed us in Shopton, that we are on
+our way over here. Of course they can't tell where we might land, but
+as soon as we do land the news will be flashed all over, and the word
+will come back that we are enemies of Russia. You can guess the rest."
+</P>
+
+<P>
+"Then let's go somewhere else," suggested Mr. Damon.
+</P>
+
+<P>
+"It would be the same anywhere in Europe," replied Ivan Petrofsky.
+"There are spies in all the large centres."
+</P>
+
+<P>
+"Well, I've got to go to Paris, or some large city to get the parts I
+need," said Tom. "Unfortunately I didn't bring any along for the dynamo
+and magneto, as I should have done, and I can't get the necessary
+pieces in a small town. I'll have to depend on some big machine shop.
+But we might land in some little-frequented place, and I could go in to
+town alone."
+</P>
+
+<P>
+"That might answer," spoke the Russian, and it was decided to try that.
+</P>
+
+<P>
+Meanwhile it was somewhat doubtful whether they would reach France, for
+they were dependent on the wind. But it seemed to be blowing steadily
+in the desired direction, and Tom noted with satisfaction that their
+progress was comparatively fast. He tried to repair the broken
+machinery but found that he could not, though he spent much of the
+night over it.
+</P>
+
+<P>
+"Hurrah!" cried Ned when morning came, and he had taken an observation.
+"There's some kind of land over there."
+</P>
+
+<P>
+The wind freshened while they were at breakfast and using more gas so
+as to raise them higher Tom directed the course of his airship as best
+he could. He wanted to get high enough so that if they passed over a
+city they would not be observed.
+</P>
+
+<P>
+At noon it could be seen through the glass that they were over the
+outskirts of some large place, and after the Russian had taken an
+observation he exclaimed:
+</P>
+
+<P>
+"The environs of Paris! We must not land there!"
+</P>
+
+<P>
+"We won't, if the wind holds out," remarked Tom and this good fortune
+came to them. They succeeded in landing in a field not far from a small
+village, and though several farmers wondered much as the sight of the
+big airship, it was thought by the platinum-seekers that they would be
+comparatively safe.
+</P>
+
+<P>
+"Now to get the first train for Paris and get the things I need,"
+exclaimed Tom. He set to work taking off the broken pieces that they
+might be duplicated, and then, having inquired at an inn for the
+nearest railroad station, and having hired a rig, the young inventor
+set off.
+</P>
+
+<P>
+"Can you speak French?" asked Mr. Petrofsky. "If not I might be of
+service, but if I go to Paris I might be----"
+</P>
+
+<P>
+"Never mind," interrupted Tom. "I guess I can parley enough to get
+along with."
+</P>
+
+<P>
+He had a small knowledge of the tongue, and with that, and knowing that
+English was spoken in many places, he felt that he could make out. And
+indeed he had no trouble. He easily found his way about the gay
+capital, and located a machine shop where a specialty was made of parts
+for automobile and airship motors. The proprietor, knowing the broken
+pieces belonged to an aeroplane, questioned Tom about his craft but the
+young inventor knew better than to give any clew that might make
+trouble, so he returned evasive answers.
+</P>
+
+<P>
+It was nearly night when he got back to the place where he had left the
+Falcon, and he found a curious crowd of rustics grouped about it.
+</P>
+
+<P>
+"Has anything happened?" he asked of his friends.
+</P>
+
+<P>
+"No, everything is quiet, I'm glad to say," replied Mr. Petrofsky. "I
+don't think our presence will create stir enough so that the news of it
+will reach the spies in Paris. Still I will feel easier when we're in
+the air again."
+</P>
+
+<P>
+"It will take a day to make the repairs," said Tom, "and put in the new
+pieces of platinum. But I'll work as fast as I can."
+</P>
+
+<P>
+He and Ned labored far into the night, and were at it again the next
+morning. Mr. Damon and the Russian were of no service for they did not
+understand the machinery well enough. It was while Tom was outside the
+craft, filing a piece of platinum in an improvised vise, that a
+poorly-clothed man sauntered up and watched him curiously. Tom glanced
+at him, and was at once struck by a difference between the man's attire
+and his person.
+</P>
+
+<P>
+For, though he was tattered and torn, the man's face showed a certain
+refinement, and his hands were not those of a farmer or laborer in
+which character he obviously posed.
+</P>
+
+<P>
+"Monsieur has a fine airship there," he remarked to Tom.
+</P>
+
+<P>
+"Oh, yes, it'll do." Tom did not want to encourage conversation.
+</P>
+
+<P>
+"Doubtless from America it comes?"
+</P>
+
+<P>
+The man spoke English but with an accent, and certain peculiarities.
+</P>
+
+<P>
+"Maybe so," replied the young inventor.
+</P>
+
+<P>
+"Is it permit to inspect the interior?"
+</P>
+
+<P>
+"No, it isn't," came from Tom shortly. He had hurt his finger with the
+file, and he was not in the best of humor.
+</P>
+
+<P>
+"Ah, there are secrets then?" persisted the stranger.
+</P>
+
+<P>
+"Yes!" said Tom shortly. "I wish you wouldn't bother me. I'm busy,
+can't you see."
+</P>
+
+<P>
+"Ah, does monsieur mean that I have poor eyesight?"
+</P>
+
+<P>
+The question was snapped out so suddenly, and with such a menacing tone
+that Tom glanced up quickly. He was surprised at the look in the man's
+eyes.
+</P>
+
+<P>
+"Just as you choose to take it," was the cool answer. "I don't know
+anything about your eyes, but I know I've got work to do."
+</P>
+
+<P>
+"Monsieur is insulting!" rasped out the seeming farmer. "He is not
+polite. He is not a Frenchman."
+</P>
+
+<P>
+"Now that'll do!" cried Tom, thoroughly aroused. "I don't want to be
+too short with you, but I've really got to get this done. One side, if
+you please," and having finished what he was doing, he started toward
+the airship.
+</P>
+
+<P>
+Whether in his haste Tom did not notice where he was going, or whether
+the man deliberately got in his way I cannot say, but at any rate they
+collided and the seeming farmer went spinning to one side, falling down.
+</P>
+
+<P>
+"Monsieur has struck me! I am insulted! You shall pay for this!" he
+cried, jumping to his feet, and making a rush for our hero.
+</P>
+
+<P>
+"All right. It was your own fault for bothering me but if you want
+anything I'll give it to you!" cried Tom, striking a position of
+defense.
+</P>
+
+<P>
+The man was about to rush at him, and there would have been a fight in
+another minute, had not Mr. Petrofsky, stepping to the open window of
+the pilot house, called out:
+</P>
+
+<P>
+"Tom! Tom! Come here, quick. Never mind him!"
+</P>
+
+<P>
+Swinging away from the man, the young inventor rushed toward the
+airship. As he entered the pilot house he noticed that his late
+questioner was racing off in the direction of the village.
+</P>
+
+<P>
+"What is it? What's the matter?" he asked of the Russian. "Is something
+more wrong with the airship?"
+</P>
+
+<P>
+"No, I just wanted to get you away from that man.
+</P>
+
+<P>
+"Oh, I could take care of myself."
+</P>
+
+<P>
+"I know that, but don't you see what his game was? I listened to him.
+He was seeking a quarrel with you."
+</P>
+
+<P>
+"A quarrel?"
+</P>
+
+<P>
+"Yes. He is a police spy. He wanted to get you into a fight and then he
+and you would be arrested by the local authorities. They'd clap you
+into jail, and hold us all here. It's a game! They suspect us, Tom! The
+Russian spies have had some word of our presence! We must get away as
+quickly as we can!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap14"></A>
+<H3 ALIGN="center">
+CHAPTER XIV
+</H3>
+
+<H3 ALIGN="center">
+HURRIED FLIGHT
+</H3>
+
+<P>
+The announcement of Ivan Petrofsky came to Tom with startling
+suddenness. He could say nothing for a moment, and then, as he realized
+what it meant, and as he recalled the strange appearance and actions of
+the man, he understood the danger.
+</P>
+
+<P>
+"Was he a spy?" he asked.
+</P>
+
+<P>
+"I'm almost sure he was," came the answer. "He isn't one of the
+villagers, that's sure, and he isn't a tourist. No one else would be in
+this little out-of-the-way place but a police official. He is in
+disguise, that is certain."
+</P>
+
+<P>
+"I believe so," agreed Tom. "But what was his game?"
+</P>
+
+<P>
+"We are suspected," replied the Russian. "I was afraid a big airship
+couldn't land anywhere, in France without it becoming known. Word must
+have been sent to Paris in the night, and this spy came out directly."
+</P>
+
+<P>
+"But what will happen now?"
+</P>
+
+<P>
+"Didn't you see where he headed for? The village. He has gone to send
+word that his trick failed. There will be more spies soon, and we may
+be detained or thrown into jail on some pretext or other. They may
+claim that we have no license, or some such flimsy thing as that.
+Anything to detain us. They are after me, of course, and I'm sorry that
+I made you run such danger. Perhaps I'd better leave you, and&mdash;"
+</P>
+
+<P>
+"No, you don't!" cried Tom heartily. "We'll all hang together or we'll
+hang separately', as Benjamin Franklin or some of those old chaps once
+remarked. I'm not the kind to desert a friend in the face of danger."
+</P>
+
+<P>
+"Bless my revolver! I should say not!" cried Mr. Damon. "What's it all
+about? Where's the danger?"
+</P>
+
+<P>
+They told him as briefly as possible, and Ned, who had been working in
+the motor room, was also informed.
+</P>
+
+<P>
+"Well, what's to be done?" asked Tom. "Had we better get out our
+ammunition, or shall I take out a French license."
+</P>
+
+<P>
+"Neither would do any good," answered the Russian. "I appreciate your
+sticking by me, and if you are resolved on that the only thing to do is
+to complete the repairs as soon as possible and get away from here."
+</P>
+
+<P>
+"That's it!" cried Ned. "A quick flight. We can get more gasolene here,
+for lots of autos pass along the road through the village. I found that
+out. Then we needn't stop until we hit the trail for the mine in
+Siberia!"
+</P>
+
+<P>
+"Hush!" cautioned the Russian. "You can't tell who may be sneaking
+around to listen. But we ought to leave as soon as we can."
+</P>
+
+<P>
+"And we will," said Tom. "I've got the magneto almost fixed!"
+</P>
+
+<P>
+"Let's get a hustle on then!" urged Ned. "That fellow meant business
+from his looks. The nerve of him to try to pick a quarrel that way."
+</P>
+
+<P>
+"I might have told by his manner that something was wrong," commented
+Tom, "but I thought he was a fresh tramp and I didn't take any pains in
+answering him. But come on, Ned, get busy."
+</P>
+
+<P>
+They did, with such good effect that by noon the machinery was in
+running shape again, and so far there had been no evidence of the
+return of the spy. Doubtless he was waiting for instructions, and
+something might happen any minute.
+</P>
+
+<P>
+"Now, Ned, if you'll see to having some gasolene brought out here, and
+the tanks filled, I'll tinker with the dynamo and get that in running
+shape," said Tom. "It only needs a little adjustment of the brushes.
+Then we'll be off."
+</P>
+
+<P>
+Ned started for the village where there was a gasolene depot. He fancied
+the villagers regarded him rather curiously, but he did not stop to ask
+what it meant. Another odd fact was that the usual crowd of curious
+rustics about the airship was missing. It was as though they suspected
+trouble might come, and they did not want to be mixed up in it.
+</P>
+
+<P>
+Never, Ned thought, had he seen a man so slow at getting ready the
+supply of gasolene. He was to take it out in a wagon, but first he
+mislaid the funnel, then the straining cloth, and finally he discovered
+a break in the harness that needed mending.
+</P>
+
+<P>
+"I believe he's doing it on purpose to delay us," thought the youth,
+"but it won't do to say anything. Something is in the wind." He helped
+the man all he could, and urged him in every way he knew, but the
+fellow seemed to have grown suddenly stupid, and answered only in
+French, though previously he had spoken some English.
+</P>
+
+<P>
+But at last Ned, by dint of hard work, got him started, and rode on the
+gasolene wagon with him. Once at the anchored airship, Tom and the
+others filled the reserve tanks themselves, though the man tried to
+help. However he did more harm than good, spilling several gallons of
+the fluid.
+</P>
+
+<P>
+"Oh, get away, and let us do it!" cried Tom at last. "I know what you&mdash;"
+</P>
+
+<P>
+"Easy!" cautioned Mr. Petrofsky, with a warning look, and Tom subsided.
+</P>
+
+<P>
+Finally the tanks were full, the man was paid, and he started to drive
+away.
+</P>
+
+<P>
+"Now to make a quick flight!" cried Tom, as he took his place in the
+pilot house, while Ned went to the engine room. "Full speed, Ned!"
+</P>
+
+<P>
+"Yes, and we'll need it, too," said the Russian.
+</P>
+
+<P>
+"Why?" asked Tom.
+</P>
+
+<P>
+"Look!" was the answer, and Ivan Petrofsky pointed across the field
+over which, headed toward the airship, came the man who had sought a
+quarrel with Tom. And with the spy were several policemen in uniform,
+their short swords dangling at their sides.
+</P>
+
+<P>
+"They're after us!" cried Mr. Damon. "Bless my chronometer they're
+after us!"
+</P>
+
+<P>
+"Start the motor, Ned! Start the motor!" cried Tom, and a moment later
+the hum of machinery was heard, while the police and the spy broke into
+a run, shouting and waving their hands.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap15"></A>
+<H3 ALIGN="center">
+CHAPTER XV
+</H3>
+
+<H3 ALIGN="center">
+PURSUED
+</H3>
+
+<P>
+Slowly the airship arose, almost too slowly to suit those on board who
+anxiously watched the oncoming officers. The latter had drawn their
+short swords, and at the sight of them Mr. Damon cried out:
+</P>
+
+<P>
+"Bless my football! If they jab them into the gas bag, Tom, we're done
+for!"
+</P>
+
+<P>
+"They won't get the chance," answered the young inventor, and he spoke
+truly, for a moment later, as the big propellers took hold of the air,
+the Falcon went up with a rush, and was far beyond the reach of the
+men. In a rage the spy shook his fist at the fast receding craft, and
+one of the policemen drew his revolver.
+</P>
+
+<P>
+"They're going to fire!" cried Ned.
+</P>
+
+<P>
+"They can't do much damage," answered Tom coolly. "A bullet hole in the
+bag is easily repaired, and anywhere else it won't amount to anything."
+</P>
+
+<P>
+The officer was aiming his revolver at the airship, now high above his
+head, but with a quick motion the spy pulled down his companion's arm,
+and they seemed to be disputing among themselves.
+</P>
+
+<P>
+"I wonder what that means?" mused Mr. Damon.
+</P>
+
+<P>
+"Probably they didn't want to risk getting into trouble," replied the
+Russian. "There are strict laws in France about using firearms, and as
+yet we are accused of no crime. We are only suspected, and I suppose
+the spy didn't want to get into trouble. He is on foreign ground, and
+there might be international complications."
+</P>
+
+<P>
+"Then you really think he was a spy?" asked Tom.
+</P>
+
+<P>
+"No doubt of it, and I'm afraid this is only the beginning of our
+trouble."
+</P>
+
+<P>
+"In what way?"
+</P>
+
+<P>
+"Well, of course word will be sent on ahead about us, and every where
+we go they'll be on the watch for us. They have our movements pretty
+well covered."
+</P>
+
+<P>
+"We won't make a descent until we get to Siberia," said Tom, "and I
+guess there it will be so lonesome that we won't be troubled much."
+</P>
+
+<P>
+"Perhaps," admitted the Russian, "but we will have to be on our guard.
+Of course keeping up in the air will be an advantage but they may&mdash;"
+</P>
+
+<P>
+He stopped suddenly and shrugged his shoulders.
+</P>
+
+<P>
+"What were you going to say?" inquired Ned.
+</P>
+
+<P>
+"Oh, it's just something that might happen, but it's too remote a
+possibility to work about. We're leaving those fellows nicely behind,"
+he added quickly, as though anxious to change the subject.
+</P>
+
+<P>
+"Yes, at this rate we'll soon be out of France," observed Tom, as he
+speeded the ship along still more. The young inventor wondered what Mr.
+Petrofsky had been going to say, but soon after this, some of the
+repaired machinery in the motor room needed adjusting, and the young
+inventor was kept so busy that the matter passed from his mind.
+</P>
+
+<P>
+The dynamo and magneto were doing much more efficient work since Tom
+had put the new platinum in, and the Falcon was making better time than
+ever before. They were flying at a moderate height, and could see
+wondering men, women and children rush out from their houses, to gaze
+aloft at the strange sight. Paris was now far behind, and that night
+they were approaching the borders of Prussia, as Mr. Petrofsky informed
+them, for he knew every part of Europe.
+</P>
+
+<P>
+The route, as laid down by Tom and the Russian, would send the airship
+skirting the southern coast of the Baltic sea, then north-west, to pass
+to one side of St. Petersburg, and then, after getting far enough to
+the north, so as to avoid the big cities, they would head due east for
+Siberia.
+</P>
+
+<P>
+"In that way I think we'll avoid any danger from the Russian police,"
+remarked the exile.
+</P>
+
+<P>
+For the next few days they flew steadily on at no remarkable speed, as
+the extra effort used more gasolene than Tom cared to expend in the
+motor. He realized that he would need all he had, and he did not want
+to have to buy any more until he was homeward bound, for the purchase
+of it would lead to questions, and might cause their detention.
+</P>
+
+<P>
+Mr. Damon gave his friends good meals and they enjoyed their trip very
+much, though naturally there was some anxiety about whether it would
+have a successful conclusion.
+</P>
+
+<P>
+"Well, if we don't find the platinum mine we'll rescue your brother, if
+there's a possible chance!" exclaimed Tom one day, as he sat in the
+pilot house with the exile. "Jove! it will be great to drop down, pick
+him up, and fly away with him before those Cossacks, or whoever has
+him, know what's up."
+</P>
+
+<P>
+"I'm afraid we can't make such a sensational rescue as that," replied
+Mr. Petrofsky. "We'll have to go at it diplomatically. That's the only
+way to get an exile out of Siberia. We must get word to him somehow,
+after we locate him, that we are waiting to help him, and then we can
+plan for his escape. Poor Peter! I do hope we can find him, for if he
+is in the salt or sulphur mines it is a living death!" and he shuddered
+at the memory of his own exile.
+</P>
+
+<P>
+"How do you expect to get definite information as to where he might
+be?" asked Tom.
+</P>
+
+<P>
+"I think the only thing to do is to get in touch with some of the
+revolutionists," answered the Russian. "They have ways and means of
+finding out even state secrets. I think our best plan will be to land
+near some small town, when we get to the edge of Siberia. If we can
+conceal the airship, so much the better. Then I can disguise myself and
+go to the village."
+</P>
+
+<P>
+"Will it be safe?" inquired the young inventor.
+</P>
+
+<P>
+"I'll have to take that chance. It's the only way, as I am the only one
+in our party who can speak Russian."
+</P>
+
+<P>
+"That's right," admitted Tom with a laugh. "I'm afraid I could never
+master that tongue. It's as hard as Chinese."
+</P>
+
+<P>
+"Not quite," replied his friend, "but it is not an easy language for an
+American."
+</P>
+
+<P>
+They talked at some length, and then Tom noticing, by one of the
+automatic gages on the wall of the pilot house, that some of the
+machinery needed attention, went to attend to it.
+</P>
+
+<P>
+He was rather surprised, on emerging from the motor compartment, to see
+Mr. Damon standing on the open after deck of the Falcon gazing
+earnestly toward the rear.
+</P>
+
+<P>
+"Star-gazing in the day time?" asked Tom with a laugh.
+</P>
+
+<P>
+"Bless my individuality!" exclaimed the odd man. "How you startled me,
+Tom! No, I'm not looking at stars, but I've been noticing a black speck
+in the sky for some time, and I was wondering whether it was my
+eyesight, or whether it really is something."
+</P>
+
+<P>
+"Where is it?"
+</P>
+
+<P>
+"Straight to the rear," answered Mr. Damon, "and it seems to be about a
+mile up. It's been hanging in the same place this ten minutes."
+</P>
+
+<P>
+"Oh, I see," spoke Tom, when the speck had been pointed out to him.
+"It's there all right, but I guess it's a bird, an eagle perhaps. Wait,
+I'll get a glass and we'll take a look."
+</P>
+
+<P>
+As he was taking the telescope down from its rack in the pilot house,
+Mr. Petrofsky saw him.
+</P>
+
+<P>
+"What's up?" asked the Russian, and the youth told him.
+</P>
+
+<P>
+"Must be a pretty big bird to be seen at such a distance as it is,"
+remarked Tom.
+</P>
+
+<P>
+"Maybe it isn't a bird," suggested Ivan Petrofsky. "I'll take a look
+myself," and, showing something of alarm in his manner, he followed Tom
+to where Mr. Damon awaited them. Ned also came out on deck.
+</P>
+
+<P>
+Quickly adjusting the glass, Tom focused it on the black speck. It
+seemed to have grown larger. He peered at it steadily for several
+seconds.
+</P>
+
+<P>
+"Is it a bird?" asked Mr. Damon.
+</P>
+
+<P>
+"Jove! It's another airship&mdash;a big biplane!" cried Tom, "and there
+seems to be three men in her."
+</P>
+
+<P>
+"An aeroplane!" gasped Ned.
+</P>
+
+<P>
+"Bless my deflecting rudder!" cried Mr. Damon. "An airship in this
+out-of-the-way place?" for they were flying over a desolate country.
+</P>
+
+<P>
+"And they're coming right after us," added Tom, as he continued to gaze.
+</P>
+
+<P>
+"I thought so," was the quiet comment of Mr. Petrofsky. "That is what I
+started to say a few days ago," he went on, "when I stopped, as I
+hardly believed it possible. I thought they might possibly send an
+aeroplane after us, as both the French and Russian armies have a number
+of fast ones. So they are pursuing us. I'm afraid my presence will
+bring you no end of trouble."
+</P>
+
+<P>
+"Let it come!" cried Tom. "If they can catch up to us they've got a
+good machine. Come on, Ned, let's speed her up, and make them take more
+of our star dust."
+</P>
+
+<P>
+"Wait a minute," advised the Russian, as he took the telescope from
+Tom, and viewed the ever-increasing speck behind them. "Are you sure of
+the speed of this craft?" he asked a moment later.
+</P>
+
+<P>
+"I never saw the one yet I couldn't pull away from, even after giving
+them a start," answered the young inventor proudly. "That is all but my
+little sky racer. I could let them get within speaking distance, and
+then pull out like the Congressional Limited passing a slow freight."
+</P>
+
+<P>
+"Then wait a few minutes," suggested Mr. Petrofsky. "That is an
+aeroplane all right, but I can't make out from what country. I'd like a
+better view, and if it's safe we can come closer."
+</P>
+
+<P>
+"Oh, it's safe enough," declared Tom. "I'll get things in shape for a
+quick move," and he hurried back to the machine room, while the others
+took turns looking at the oncoming aeroplane. And it was coming on
+rapidly, showing that it had tremendous power, for it was a very large
+one, carrying three men.
+</P>
+
+<P>
+"How do you suppose they got on our track?" asked Ned.
+</P>
+
+<P>
+"Oh, we must have been reported from time to time, as we flew over
+cities or towns," replied Mr. Petrofsky. "You know we're rather large,
+and can be seen from a good distance. Then too, the whole Russian
+secret police force is at the service of our enemies."
+</P>
+
+<P>
+"But we're not over Russia yet," said Mr. Damon.
+</P>
+
+<P>
+Ivan Petrofsky took the telescope and peered down toward the earth.
+They were not a great way above it, and at that moment they were
+passing a small village.
+</P>
+
+<P>
+"Can you tell where we are?" asked the odd man.
+</P>
+
+<P>
+"We are just over the border of the land of the Czar," was the quiet
+answer. "The imperial flag is flying from a staff in front of one of
+the buildings down there. We are over Russia."
+</P>
+
+<P>
+"And here comes that airship," called Ned suddenly.
+</P>
+
+<P>
+They gazed back with alarm, and saw that it was indeed so. The big
+aeroplane had come on wonderfully fast in the last few minutes.
+</P>
+
+<P>
+"Tom! Tom!" cried his chum. "Better get ready to make a sprint."
+</P>
+
+<P>
+"I'm all ready," calmly answered our hero. "Shall I go now?"
+</P>
+
+<P>
+"If you can give us a few seconds longer I may be able to tell who is
+after us," remarked Mr. Petrofsky, turning his telescope on the craft
+behind them.
+</P>
+
+<P>
+"I can let them get almost up to us, and get away," replied Tom.
+</P>
+
+<P>
+The Russian did not answer. He was gazing earnestly at the approaching
+aeroplane. A moment later he took the glass down from his eye.
+</P>
+
+<P>
+"It's our spy again," he said. "There are two others with him. That is
+one of the aeroplanes owned by the secret police. They are stationed
+all over Europe, ready for instant service, and they're on our trail."
+</P>
+
+<P>
+The pursuing craft was so near that the occupants could easily be made
+out with the naked eye, but it needed the glass to distinguish their
+features, and Mr. Petrofsky had done this.
+</P>
+
+<P>
+"Shall I speed up?" cried Tom.
+</P>
+
+<P>
+"Yes, get away as fast as you can!" shouted the Russian. "No telling
+what they may do," and then, with a hum and a roar the motor of the
+Falcon increased its speed, and the big airship shot ahead.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap16"></A>
+<H3 ALIGN="center">
+CHAPTER XVI
+</H3>
+
+<H3 ALIGN="center">
+THE NIHILISTS
+</H3>
+
+<P>
+From the pursuing aircraft came a series of sharp explosions that
+fairly rattled through the clear air.
+</P>
+
+<P>
+"Look out for bombs!" yelled Ned.
+</P>
+
+<P>
+"Bless my safety match!" cried Mr. Damon. "Are they anarchists?"
+</P>
+
+<P>
+"It's only their motor back-firing," cried Tom. "It's all right,
+They're done for now, we'll leave them behind."
+</P>
+
+<P>
+He was a true prophet, for with a continued rush and a roar the airship
+of our friends opened up a big gap between her rear rudders and the
+forward planes of the craft that was chasing her. The three men were
+working frantically to get their motor in shape, but it was a useless
+task.
+</P>
+
+<P>
+A little later, finding that they were losing speed, the three police
+agents, or spies, whatever they might be, had to volplane to earth and
+there was no need for the Falcon to maintain the terrific pace, to
+which Tom had pushed her. The pursuit was over.
+</P>
+
+<P>
+"Well, we got out of that luckily," remarked Ned, as he looked down to
+where the spies were making a landing. "I guess they won't try that
+trick again."
+</P>
+
+<P>
+"I'm afraid they will," predicted Mr. Petrofsky. "You don't know these
+government agents as I do. They never give up. They'll fix their
+engine, and get on our trail again."
+</P>
+
+<P>
+"Then we'll make them work for what they get," put in Tom, who, having
+set the automatic speed accelerator, had rejoined his companions.
+"We'll try a high flight and if they can pick up a trail in the air,
+and come up to us, they're good ones!"
+</P>
+
+<P>
+He ran to the pilot house, and set the elevation rudder at its limit.
+Meanwhile the spies were working frantically over their motor, trying
+to get it in shape for the pursuit. But soon they realized that this
+was out of the question, for the Falcon was far away, every moment
+going higher and higher, until she was lost to sight beyond the clouds.
+</P>
+
+<P>
+"I guess they'll have their own troubles now," remarked Ned. "We've
+seen the last of them."
+</P>
+
+<P>
+"Don't be too sure," spoke the Russian. "We may have them after us
+again. We're over the land of the Czar now, and they'll have
+everything their own way. They'll want to stop me at any cost."
+</P>
+
+<P>
+"Do you think they suspect that we're after the platinum?" asked Tom.
+</P>
+
+<P>
+"They may, for they know my brother and I were the only ones who ever
+located it, though unless I get in the exact neighborhood I'd have
+trouble myself picking it out. I remember some of the landmarks, but my
+brother is better at that sort of work than I am. But I think what they
+are mostly afraid of is that I have some designs on the life of, say
+one of the Grand Dukes, or some high official. But I am totally opposed
+to violent measures," went on Mr. Petrofsky. "I believe in a campaign
+of education, to gain for the down-trodden people what are their
+rights."
+</P>
+
+<P>
+"Do you think they know you are coming to rescue your brother?" asked
+Tom.
+</P>
+
+<P>
+"I don't believe so. And I hope not, for once they suspected that, they
+would remove him to some place where I never could locate him."
+</P>
+
+<P>
+Calmer feelings succeeded the excitement caused by the pursuit, and our
+friends, speculating on the matter, came to the conclusion that the
+aeroplane must have started from some Prussian town, as Mr. Petrofsky
+said there were a number of Russian secret police in that country. The
+Falcon was now speeding along at a considerable height, and after
+running for a number of miles, sufficient to preclude the possibility
+that they could be picked up by the pursuing aeroplane, Tom sent his
+craft down, as the rarefied atmosphere made breathing difficult.
+</P>
+
+<P>
+It was about three days after the chase when, having carefully studied
+the map and made several observations through the telescope of the
+Country over which they were traveling, that Ivan Petrofsky said:
+</P>
+
+<P>
+"If it can be managed, Tom, I think we ought to go down about here.
+There is a Russian town not far away, and I know a few friends there,
+There is a large stretch of woodland, and the airship can be easily
+concealed there.
+</P>
+
+<P>
+"All right," agreed the young inventor, "down we go, and I hope you get
+the information you want."
+</P>
+
+<P>
+Flying high so as to keep out of the observation of the inhabitants of
+the Russian town, the young inventor sent his craft in a circle about
+it, and, having seen a clearing in the forest, he made a landing there,
+the Falcon having come to rest a second time since leaving Shopton, now
+several thousand miles away.
+</P>
+
+<P>
+"We'll hide here for a few days," observed Tom, "and you can spend as
+much time in town as you like, Mr. Petrofsky."
+</P>
+
+<P>
+The Russian, disguising himself by trimming his beard, and putting on a
+pair of dark spectacles, went to the village that afternoon.
+</P>
+
+<P>
+While he was gone Tom, Ned and Mr. Damon busied themselves about the
+airship, making a few repairs that could not very well be done while it
+was in motion. As night came on, and the exile did not return, Tom
+began to get a little worried, and he had some notion of going to seek
+him, but he knew it would not be safe.
+</P>
+
+<P>
+"He'll come all right," declared Ned, as they sat down to supper. All
+about them was an almost impenetrable forest, cut here and there by
+paths along which, as Mr. Petrofsky had told them, the wood cutters
+drove their wagons.
+</P>
+
+<P>
+It was quite a surprise therefor, when, as they were leaving the table,
+a knock was heard on the cabin door.
+</P>
+
+<P>
+"Bless my electric bell!" cried Mr. Damon. "Who can that be?"
+</P>
+
+<P>
+"Mr. Petrofsky of course," answered Ned.
+</P>
+
+<P>
+"He wouldn't knock&mdash;he'd walk right in," spoke Tom, as he went to the
+door. As he opened it he saw several dark-bearded men standing there,
+and in their midst Mr. Petrofsky.
+</P>
+
+<P>
+For one moment our hero feared that his friend had been arrested and
+that the police had come to take the rest of them into custody. But a
+word from the exile reassured him.
+</P>
+
+<P>
+"These are some of my friends," said Mr. Petrofsky simply. "They are
+Nihilists which I am not, but&mdash;"
+</P>
+
+<P>
+"Nihilists yes! Always!" exclaimed one who spoke English. "Death to the
+Czar and the Grand Dukes! Annihilation to the government!"
+</P>
+
+<P>
+"Gently my friend, gently," spoke Mr. Petrofsky. "I am opposed to
+violence you know." And then, while his new friends gazed wonderingly
+at the strange craft, he led them inside. Tom and the others were
+hardly able to comprehend what was about to take place.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap17"></A>
+<H3 ALIGN="center">
+CHAPTER XVII
+</H3>
+
+<H3 ALIGN="center">
+ON TO SIBERIA
+</H3>
+
+<P>
+"Has anything happened?" asked Tom. "Are we suspected? Have they come
+to warn us?"
+</P>
+
+<P>
+"No, everything is all right, so far," answered Ivan Petrofsky. "I
+didn't have the success I hoped for, and we may have to wait here for a
+few days to get news of my brother. But these men have been very kind
+to me," he went on, "and they have ways of getting information that I
+have not. So they are going to aid me."
+</P>
+
+<P>
+"That's right!" exclaimed the one who had first spoken. "We will yet
+win you to our cause, Brother Petrofsky. Death to the Czar and the
+Grand Dukes!"
+</P>
+
+<P>
+"Never!" exclaimed the exile firmly. "Peaceful measures will succeed.
+But I am grateful for what you can do for me. They heard me describe
+your wonderful airship," he explained to Tom, "and wanted to see for
+themselves."
+</P>
+
+<P>
+The Nihilists were made welcome after Mr. Petrofsky had introduced
+them. They had strange and almost unpronounceable names for the ears
+of our friends, and I will not trouble you with them, save to say that
+the one who spoke English fairly well, and who was the leader, was
+called Nicolas Androwsky. There was much jabbering in the Russian
+tongue, when Mr. Petrofsky and Mr. Androwsky took the others about the
+craft, explaining how it worked.
+</P>
+
+<P>
+"I can't show you the air glider," said Tom, who naturally acted as
+guide, "as it would take too long to put together, and besides there is
+not enough wind here to make it operate."
+</P>
+
+<P>
+"Then you need much wind?" asked Nicolas Androwsky.
+</P>
+
+<P>
+"The harder the gale the better she flies," answered Tom proudly.
+</P>
+
+<P>
+"Bless my sand bag, but that's right!" exclaimed Mr. Damon, who, up to
+now had not taken much part in the conversation. He followed the party
+about the airship, keeping in the rear, and he eyed the Nihilists as if
+he thought that each one had one or more dynamite bombs concealed on
+his person.
+</P>
+
+<P>
+"Ha!" exclaimed Mr. Androwsky, turning suddenly to the odd man. "Are
+you not one of us? Do you not believe that this terrible kingdom should
+be destroyed&mdash;made as nothing, and a new one built from its ashes? Are
+you not one of us?" and with a quick gesture he reached into his pocket.
+</P>
+
+<P>
+"No! No!" exclaimed Mr. Damon, starting back. "Bless my election
+ticket! No! Never could I throw a bomb. Please don't give me one." Mr.
+Damon started to run away.
+</P>
+
+<P>
+"A bomb!" exclaimed the Nihilist, and then he drew from his pocket some
+pamphlets printed in Russian. "I have no bombs. Here are some of the
+tracts we distribute to convert unbelievers to our cause," he went on.
+"Read them and you will understand what we are striving for. They will
+convert you, I am sure."
+</P>
+
+<P>
+He went on, following the rest of the party, while Mr. Damon dropped
+back with Ned.
+</P>
+
+<P>
+"Bless my gas meter!" gasped the odd man, as he stared at the
+queerly-printed documents in his hand. "I thought he was going to give
+me a bomb to throw!"
+</P>
+
+<P>
+"I don't blame you," said Ned in a low voice. "They look like desperate
+men, but probably they have suffered many hardships, and they think
+their way of righting a wrong is the only way. I suppose you'll read
+those tracts," he added with a smile.
+</P>
+
+<P>
+"Hum! I'm afraid not," answered Mr. Damon. "I might just as well try to
+translate a Chinese laundry check. But I'll save 'em for souvenirs,"
+and he carefully put them in his pocket, as if he feared they might
+unexpectedly turn into a bomb and blow up the airship.
+</P>
+
+<P>
+The tour of the craft was completed and the Nihilists returned to the
+comfortable cabin where, much to their surprise, they were served with
+a little lunch, Mr. Damon bustling proudly about from the table to the
+galley, and serving tea as nearly like the Russians drink it as
+possible.
+</P>
+
+<P>
+"Well, you certainly have a wonderful craft here&mdash;wonderful," spoke Mr.
+Androwsky. "If we had some of these in our group now, we could start
+from here, hover over the palace of the Czar, or one of the Grand
+Dukes, drop a bomb, utterly destroy it, and come back before any of the
+hated police would be any the wiser."
+</P>
+
+<P>
+"I'm afraid I can't lend it to you," said Tom, and he could scarcely
+repress a shudder at the terrible ideas of the Nihilists.
+</P>
+
+<P>
+"It would never do," agreed Ivan Petrofsky. "The campaign of education
+is the only way."
+</P>
+
+<P>
+There were gutteral objections on the part of the other Russians, and
+they turned to more cheerful subjects of talk.
+</P>
+
+<P>
+"What are your plans?" asked Tom of the exile. "You say you can get no
+trace here of your brother?"
+</P>
+
+<P>
+"No, he seems to have totally disappeared from sight. Usually we
+enemies of the government can get some news of a prisoner, but poor
+Peter is either dead, or in some obscure mine, which is hidden away in
+the forests or mountains."
+</P>
+
+<P>
+"Maybe he is in the lost platinum mine," suggested Ned.
+</P>
+
+<P>
+"No, that has not been discovered," declared the exile, "or my friends
+here would have heard of it. That is still to be found."
+</P>
+
+<P>
+"And we'll do it, in the air glider," declared Tom. "By the way, Mr.
+Petrofsky, would it not be a good plan to ask your friends the location
+of the place where the winds constantly blow with such force. It occurs
+to me that in some such way we might locate the mine."
+</P>
+
+<P>
+"It would be of use if there was only one place of the gales," replied
+the exile. "But Siberia has many such spots in the mountain
+fastnesses&mdash;places which, by the peculiar formation of the land, have
+constant eddys of air over them. No, the only way is for us to go as
+nearly as possible to the place where my brother and I were imprisoned,
+and search there."
+</P>
+
+<P>
+"But what is that you said about us having to stay here, to get some
+news of your brother?" asked Tom.
+</P>
+
+<P>
+"I had hoped to get some information here," resumed Mr. Petrofsky, "but
+my friends here are without news. However, they are going to make
+inquiries, and we will have to stay here until they have an answer. It
+will be safe, they think, as there are not many police in town, and the
+local authorities are not very efficient. So the airship will remain
+here, and, from time to time I will go to the village, disguised, and
+see if any word has come."
+</P>
+
+<P>
+"And we will bring you news as soon as we get it," promised Mr.
+Androwsky. "You are not exactly one of us, but you are against the
+government, and, therefor, a brother. But you will be one of us in
+time."
+</P>
+
+<P>
+"Never," replied the exile with a smile. "My only hope now is to get my
+brother safely away, and then we will go and live in free America. But,
+Tom, I hope I won't put you out by delaying here."
+</P>
+
+<P>
+"Not a bit of it. More than half the object of our trip is to rescue
+your brother. We must do that first. Now as to details," and they fell
+to discussing plans. It was late that night when the Nihilists left the
+airship, first having made a careful inspection to see that they were
+not spied upon. They promised at once to set to work their secret
+methods of getting information.
+</P>
+
+<P>
+For several days the airship remained in the vicinity of the Russian
+town. Our friends were undisturbed by visitors, as they were in a
+forest where the villagers seldom came and the nearest wood-road was
+nearly half a mile off.
+</P>
+
+<P>
+Every day either Mr. Petrofsky went in to town to see the Nihilists or
+some of them came out to the Falcon, usually at night.
+</P>
+
+<P>
+"Well, have you any word yet?" asked Tom, after about a week had passed.
+</P>
+
+<P>
+"Nothing yet," answered the exile, and his tone was a bit hopeless.
+"But we have not given up. All the most likely places have been tried,
+but he is not there. We have had traces of him, but they are not fresh
+ones. He seems to have been moved from one mine to another. Probably
+they feared I would make an attempt to rescue him. But I have not given
+up. He is somewhere in Siberia."
+</P>
+
+<P>
+"And we'll find him!" cried Tom with enthusiasm.
+</P>
+
+<P>
+For three days more they lingered, and then, one night, when they were
+just getting ready to retire, there was a knock on the cabin door. Mr.
+Petrofsky had been to the village that day, and had received no news.
+He had only returned about an hour before.
+</P>
+
+<P>
+"Some one's knocking," announced Ned, as if there could be any doubt of
+it.
+</P>
+
+<P>
+"Bless my burglar alarm!" gasped Mr. Damon.
+</P>
+
+<P>
+"I'll see who it is," volunteered Mr. Petrofsky, and Tom looked toward
+the rack of loaded rifles, for that day a man, seemingly a wood cutter
+had passed close to the airship, and had hurried off as if he had seen
+a ghost.
+</P>
+
+<P>
+The knock was repeated. It might be their friends, and it might be&mdash;
+</P>
+
+<P>
+But Mr. Petrofsky solved the riddle by throwing back the portal, and
+there stood the Nihilist, Nicolas Androwsky.
+</P>
+
+<P>
+"Is there anything the matter?" asked the exile quickly.
+</P>
+
+<P>
+"We have news," was the cautious answer, as the Nihilist slipped in,
+and closed the door behind him.
+</P>
+
+<P>
+"News of my brother?"
+</P>
+
+<P>
+"Of your brother! He is in a sulphur mine in the Altai Mountains, near
+the city of Abakansk."
+</P>
+
+<P>
+"Where's that?" asked Tom for he had forgotten most of his Russian
+geography.
+</P>
+
+<P>
+"The Altai Mountains are a range about the middle of Siberia,"
+explained Mr. Petrofsky. "They begin at the Kirghiz Steppes, and run
+west. It is a wild and desolate place. I hope we can find poor Peter
+alive."
+</P>
+
+<P>
+"And this city of Abakansk?" went on the young inventor.
+</P>
+
+<P>
+"It is many miles from here, but I can give you a good map," said the
+Nihilist. "Some of our friends are there," he added with a half-growl.
+"I wish we could rescue all of them."
+</P>
+
+<P>
+"We'd like to," spoke Tom. "But I fear it is impossible. But now that
+we have a clew, come on! Let's start at once! It may be dangerous to
+stay here. On to Siberia!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap18"></A>
+<H3 ALIGN="center">
+CHAPTER XVIII
+</H3>
+
+<H3 ALIGN="center">
+IN A RUSSIAN PRISON
+</H3>
+
+<P>
+The news they had waited for had come at last. It might be a false
+clew, but it was something to work on, and Tom was tired of inaction.
+Then, too, even after they had started, the prisoner might be moved and
+they would have to trace him again.
+</P>
+
+<P>
+"But that is the latest information we could get," said Mr. Androwsky.
+"It came through some of our Anarchist friends, and I believe is
+reliable. Can you soon make a thousand miles in your airship?"
+</P>
+
+<P>
+"Yes," answered Tom, "if I push her to the limit."
+</P>
+
+<P>
+"Then do so," advised the Nihilist, "for there is need of haste. In
+making inquiries our friends might incur suspicions and Peter Petrofsky
+may be exiled to some other place."
+</P>
+
+<P>
+"Oh, we'll get there," cried Tom. "Ned, see to the gas machine. Mr.
+Damon, you can help me in the pilot house."
+</P>
+
+<P>
+"Here is a map of the best route," said the Nihilist, as he handed one
+to Mr. Petrofsky. "It will take you there the shortest way. But how can
+you steer when high in the air?"
+</P>
+
+<P>
+"By compass," explained Tom. "We'll get there, never fear, and we're
+grateful for your clew."
+</P>
+
+<P>
+"I never can thank you enough!" exclaimed the exile, as he shook hands
+with Mr. Androwsky.
+</P>
+
+<P>
+The Nihilist left, after announcing that, in the event of the success
+of Tom and his friends, and the rescue of the exile from the sulphur
+mine, it would probably become known to them, as such news came through
+the Revolutionary channels, slowly but surely.
+</P>
+
+<P>
+"Here we go!" cried the young inventor gaily, as he turned the starting
+lever in the pilot house, and silently, in the darkness of the night,
+the Falcon shot upward. There was not a light on board, for, though
+small signal lamps had been kept burning when the craft was in the
+forest, to guide the Nihilists to her, now that she was up in the air,
+and in motion, it was feared that her presence would become known to
+the authorities of the town, so even these had been extinguished.
+</P>
+
+<P>
+"After we get well away we can turn on the electrics," remarked Tom,
+"and if they see us at a distance they may take us for a meteor. But,
+so close as this, they'd get wise in a minute."
+</P>
+
+<P>
+Mr. Damon, who had done all that Tom needed in the starting of the
+craft, went to the forward port rail, and idly looked down on the black
+forest they were leaving. He could just make out the clearing where
+they had rested for over a week, and he was startled to see lights
+bobbing in it.
+</P>
+
+<P>
+"I say, Mr. Petrofsky!" he called. "Did we leave any of our lanterns
+behind us?"
+</P>
+
+<P>
+"I don't believe so," answered the exile. "I'll ask Tom."
+</P>
+
+<P>
+"Lanterns? No," answered the young inventor. "Before we started I took
+down the only one we had out. I'll take a look."
+</P>
+
+<P>
+Setting the automatic steering apparatus, he joined Mr. Damon and the
+Russian. The lights were now dimly visible, moving about in the forest
+clearing.
+</P>
+
+<P>
+"It's just as if they were looking for something," said Tom. "Can it be
+that any of your Nihilist friends, Mr. Petrofsky are&mdash;"
+</P>
+
+<P>
+"Friends&mdash;no friends&mdash;enemies!" cried the Russian. "I understand now!
+We got away just in time. Those are police agents who are looking for
+us! They must have received word about our being there. Androwsky and
+the others never carry lights when they go about. They know the country
+too well, and then, too, it leads to detection. No, those are police
+spies. A few minutes later, and we would have been discovered."
+</P>
+
+<P>
+"As it is we're right over their heads, and they don't know it,"
+chuckled Tom. The airship was moving silently along before a good
+breeze, the propellers not having been started, and Tom let her drift
+for several miles, as he did not want to give the police spies a clew
+by the noise of the motor.
+</P>
+
+<P>
+The twinkling lights in the forest clearing disappeared from sight, and
+the seekers went on in the darkness.
+</P>
+
+<P>
+"Well, we've got the hardest part of our work yet ahead of us,"
+remarked Tom several hours later when, the lights having been set
+aglow, they were gathered in the main cabin. There was no danger of
+being seen now, for they were quite high.
+</P>
+
+<P>
+"We've done pretty well, so far," commented Ned. "I think we will have
+easier work rescuing Mr. Petrofsky's brother than in locating the mine.
+</P>
+
+<P>
+"I don't know about that," answered the Russian. "It is almost
+impossible to rescue a person from Siberia. Of course it is not going
+to be easy to locate the lost mine, but as for that we can keep on
+searching, that is if the air glider works, but there are so many
+forces to fight against in rescuing a prisoner."
+</P>
+
+<P>
+They had a long journey ahead of them, and not an easy route to follow,
+but as the days passed, and they came nearer and nearer to their goal,
+they became more and more eager.
+</P>
+
+<P>
+They were passing over a desolate country, for they avoided the
+vicinity of large towns and cities.
+</P>
+
+<P>
+"I wonder when we'll strike Siberia?" mused Tom one afternoon, as they
+sat on the outer deck, enjoying the air.
+</P>
+
+<P>
+"At this rate of progress, very soon," answered the exile, after
+glancing at the map. "We should be at the foot of the Ural mountains in
+a few hours, and across them in the night. Then we will be in Siberia."
+</P>
+
+<P>
+And he was right, for just as supper was being served, Ned, who had
+been making observations with a telescope, exclaimed:
+</P>
+
+<P>
+"These must be the Urals!"
+</P>
+
+<P>
+Mr. Petrofsky seized the glass.
+</P>
+
+<P>
+"They are," he announced. "We will cross between Orsk and Iroitsk. A
+safe place. In the morning we will be in Siberia&mdash;the land of the
+exiles."
+</P>
+
+<P>
+And they were, morning seeing them flying over a most desolate stretch
+of landscape. Onward they flew, covering verst after verst of
+loneliness.
+</P>
+
+<P>
+"I'm going to put on a little more speed," announced Tom, after a visit
+to the storeroom, where were kept the reserve tanks of gasolene. "I've
+got more fluid than I thought I had, and as we're on the ground now I
+want to hurry things. I'm going to make better time," and he yanked
+over the lever of the accelerator, sending the Falcon ahead at a rapid
+rate.
+</P>
+
+<P>
+All day this was kept up, and they were just making an observation to
+determine their position, along toward supper time, when there came the
+sound of another explosion from the motor room.
+</P>
+
+<P>
+"Bless my safety valve!" cried Mr. Damon. "Something has gone wrong
+again."
+</P>
+
+<P>
+Tom ran to the motor, and, at the same time the Falcon which was being
+used as an aeroplane and not as a dirigible, began to sink.
+</P>
+
+<P>
+"We're going down!" cried Ned.
+</P>
+
+<P>
+"Well, you know what to do!" shouted his chum. "The gas bag! Turn on
+the generator!"
+</P>
+
+<P>
+Ned ran to it, but, in spite of his quick action, the craft continued
+to slide downward.
+</P>
+
+<P>
+"She won't work!" he cried.
+</P>
+
+<P>
+"Then the intake pipe must be stopped!" answered the young inventor.
+"Never mind, I'll volplane to earth and we can make repairs. That
+magneto has gone out of business again."
+</P>
+
+<P>
+"Don't land here!" cried Ivan Petrofsky.
+</P>
+
+<P>
+"Why not?"
+</P>
+
+<P>
+"Because we are approaching a large town&mdash;Owbinsk I think it is&mdash;the
+police there will be there to get us. Keep on to the forest again!"
+</P>
+
+<P>
+"I can't!" cried Tom. "We've got to go down, police or no police."
+</P>
+
+<P>
+Running to the pilot house, he guided the craft so that it would safely
+volplane to earth. They could all see that now they were approaching a
+fairly large town, and would probably land on its outskirts. Through
+the glass Ned could make out people staring up at the strange sight.
+</P>
+
+<P>
+"They'll be ready to receive us," he announced grimly.
+</P>
+
+<P>
+"I hope they have no dynamite bombs for us," murmured Mr. Damon. "Bless
+my watch chain! I must get rid of that Nihilist literature I have about
+me, or they'll take me for one," and he tore up the tracts, and
+scattered them in the air.
+</P>
+
+<P>
+Meanwhile the Falcon continued to descend.
+</P>
+
+<P>
+"Maybe I can make quick repairs, and get away before they realize who
+we are," said Tom, as he got ready for the landing.
+</P>
+
+<P>
+They came down in a big field, and, almost before the bicycle wheels
+had ceased revolving, under the application of the brakes, several men
+came running toward them.
+</P>
+
+<P>
+"Here they come!" cried Mr. Damon.
+</P>
+
+<P>
+"They are only farmers," said the exile. He had donned his dark glasses
+again, and looked like anything but a Russian.
+</P>
+
+<P>
+"Lively, Ned!" cried Tom. "Let's see if we can't make repairs and get
+off again."
+</P>
+
+<P>
+The two lads frantically began work, and they soon had the magneto in
+running order. They could have gone up as an aeroplane, leaving the
+repairs to the gas bag to be made later but, just as they were ready to
+start, there came galloping out a troop of Cossack soldiers. Their
+commander called something to them.
+</P>
+
+<P>
+"What is he saying?" cried Tom to Mr. Petrofsky.
+</P>
+
+<P>
+"He is telling them to surround us so that we can not get a running
+start, such as we need to go up. Evidently he understands aeroplanes."
+</P>
+
+<P>
+"Well, I'm going to have a try," declared the young inventor.
+</P>
+
+<P>
+He jumped to the pilot house, yelling to Ned to start the motor, but it
+was too late. They were hemmed in by a cordon of cavalry, and it would
+have been madness to have rushed the Falcon into them, for she would
+have been wrecked, even if Tom could have succeeded in sending her
+through the lines.
+</P>
+
+<P>
+"I guess it's all up with us," groaned Ned.
+</P>
+
+<P>
+And it seemed to; for, a moment later, an officer and several aides
+galloped forward, calling out something in Russian.
+</P>
+
+<P>
+"What is it?" asked Tom.
+</P>
+
+<P>
+"He says we are under arrest," translated the exile.
+</P>
+
+<P>
+"What for?" demanded the young inventor.
+</P>
+
+<P>
+Ivan Petrofsky shrugged his shoulders.
+</P>
+
+<P>
+"It is of little use to ask&mdash;now," he answered. "It may be we have
+violated some local law, and can pay a fine and go, or we may be taken
+for just what we are, or foreign spies, which we are not. It is best to
+keep quiet, and go with them."
+</P>
+
+<P>
+"Go where?" cried Tom.
+</P>
+
+<P>
+"To prison, I suppose," answered the exile. "Keep quiet, and leave it
+to me. I will do all I can. I don't believe they will recognize me.
+</P>
+
+<P>
+"Bless my search warrant!" cried Mr. Damon. "In a Russian prison! That
+is terrible!"
+</P>
+
+<P>
+A few minutes later, expostulations having been useless, our friends
+were led away between guards who carried ugly looking rifles, and who
+looked more ugly and menacing themselves. Then the doors of the Russian
+prison of Owbinsk closed on Tom and his friends, while their airship
+was left at the mercy of their enemies.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap19"></A>
+<H3 ALIGN="center">
+CHAPTER XIX
+</H3>
+
+<H3 ALIGN="center">
+LOST IN A SALT MINE
+</H3>
+
+<P>
+The blow had descended so suddenly that it was paralyzing. Tom and his
+friends did not know what to do, but they saw the wisdom of the course
+of leaving everything to Ivan Petrofsky. He was a Russian, and he knew
+the Russian police ways&mdash;to his sorrow.
+</P>
+
+<P>
+"I'm not afraid," said Tom, when they had been locked in a large prison
+room, evidently set apart for the use of political, rather than
+criminal, offenders. "We're United States citizens, and once our
+counsel hears of this&mdash;as he will&mdash;there'll be some merry doings in
+Oskwaski, or whatever they call this place. But I am worried about what
+they may do to the Falcon."
+</P>
+
+<P>
+"Have no fears on that score," said the Russian exile. "They know the
+value of a good airship, and they won't destroy her."
+</P>
+
+<P>
+"What will they do then?" asked Tom.
+</P>
+
+<P>
+"Keep her for their own use, perhaps."
+</P>
+
+<P>
+"Never!" cried Tom. "I'll destroy her first!"
+</P>
+
+<P>
+"If you get the chance!" interposed the exile.
+</P>
+
+<P>
+"But we're American citizens!" cried Tom, "and&mdash;"
+</P>
+
+<P>
+"You forget that I am not," interrupted Mr. Petrofsky. "I can't claim
+the protection of your flag, and that is why I wish to remain unknown.
+We must act quietly. The more trouble we make, the more important they
+will know us to be. If we hope to accomplish anything we must act
+cautiously."
+</P>
+
+<P>
+"But my airship!" cried Tom.
+</P>
+
+<P>
+"They won't do anything to that right away," declared the Russian in a
+whisper for he knew sometimes the police listened to the talk of
+prisoners. "I think, from what I overheard when they arrested us, that
+we either trespassed on the grounds of some one in authority, who had
+us taken in out of spite, or they fear we may be English or French
+spies, seeking to find out Russian secrets."
+</P>
+
+<P>
+They were served with food in their prison, but to all inquiries made
+by Ivan Petrofsky, evasive answers were returned. He spoke in poor,
+broken Russian, so that he would not be taken for a native of that
+country. Had he been, he would have at once been in great danger of
+being accused as an escaped exile.
+</P>
+
+<P>
+Finally a man who, the exile whispered to his Companions, was the local
+governor, came to their prison. He eagerly asked questions as to their
+mission, and Mr. Petrofsky answered them diplomatically.
+</P>
+
+<P>
+"I don't think he'll make much out of what I told him," said the exile
+when the governor had gone. "I let him think we were scientists, or
+pleasure seekers, airshipping for our amusement. He tried to tangle me
+up politically, but I knew enough to keep out of such traps."
+</P>
+
+<P>
+"What's going to become of us?" asked Ned.
+</P>
+
+<P>
+"We will be detained a few days&mdash;until they find out more about us.
+Their spies are busy, I have no doubt, and they are telegraphing all
+over Europe about us."
+</P>
+
+<P>
+"What about my airship?" asked Tom.
+</P>
+
+<P>
+"I spoke of that," answered the exile. "I said you were a well-known
+inventor of the United States, and that if any harm came to the craft
+the Russian Government would not only be held responsible, but that the
+governor himself would be liable, and I said that it cost much money.
+That touched him, for, in spite of their power, these Russians are
+miserably paid. He didn't want to have to make good, and if it
+developed that he had made a mistake in arresting us, his superiors
+would disclaim all responsibility, and let him shoulder the blame. Oh,
+all is not lost yet, though I don't like the looks of things."
+</P>
+
+<P>
+Indeed it began to seem rather black for our friends, for, that night
+they were taken from the fairly comfortable, large, prison room, and
+confined in small stone cells down in a basement. They were separated,
+but as the cells adjoined on a corridor they could talk to each other.
+With some coarse food, and a little water, Tom and his friends were
+left alone.
+</P>
+
+<P>
+"Say I don't like this!" cried our hero, after a pause.
+</P>
+
+<P>
+"Me either," chimed in Ned.
+</P>
+
+<P>
+"Bless my burglar alarm!" exclaimed Mr. Damon. "It's an awful disgrace!
+If my wife ever heard of me being in jail&mdash;"
+</P>
+
+<P>
+"She may never hear of it!" interposed Tom.
+</P>
+
+<P>
+"Bless my heart!" cried the odd man. "Don't say such things."
+</P>
+
+<P>
+They discussed their plight at length, but nothing could be done, and
+they settled themselves to uneasy slumber. For two days they were thus
+imprisoned, and all of Mr. Petrofsky's demands that they be given a
+fair trial, and allowed to know the nature of the charge against them,
+went for naught. No one came to see them but a villainous looking
+guard, who brought them their poor meals. The governor ignored them,
+and Mr. Petrofsky did not know what to think.
+</P>
+
+<P>
+"Well, I'm getting sick of this!" exclaimed Tom&mdash;"I wish I knew where
+my airship was."
+</P>
+
+<P>
+"I fancy it's in the same place," replied the exile. "From the way the
+governor acted I think he'd be afraid to have it moved. It might be
+damaged. If I could only get word to some of my Revolutionary friends
+it might do some good, but I guess I can't. We'll just have to wait."
+</P>
+
+<P>
+Another day passed, and nothing happened. But that night, when the
+guard came to bring their suppers, something did occur.
+</P>
+
+<P>
+"Hello! we've got a new one!" exclaimed Tom, as he noted the man. "Not
+so bad looking, either."
+</P>
+
+<P>
+The man peered into his cell, and said something in Russian.
+</P>
+
+<P>
+"Nothing doing," remarked the young inventor with a short laugh. "Nixy
+on that jabbering."
+</P>
+
+<P>
+But, no sooner had the man's words penetrated to the cell of Ivan
+Petrofsky, that the exile called out something. The guard started,
+hastened to that cell door, and for a few seconds there was an excited
+dialogue in Russian.
+</P>
+
+<P>
+"Boys! Mr. Damon! We're saved!" suddenly cried out Mr. Petrofsky.
+</P>
+
+<P>
+"Bless my door knob! You don't say so!" gasped the odd man. "How? Has
+the Czar sent orders to release us."
+</P>
+
+<P>
+"No, but somehow my Revolutionary friends have heard about my arrest,
+and they have arranged for our release&mdash;secretly of course. This guard
+is affiliated with the Nihilist group that got on the trail of my
+brother. He bribed the other guard to let him take his place for
+to-night, and now&mdash;"
+</P>
+
+<P>
+"Yes! What is it?" cried Tom.
+</P>
+
+<P>
+"He's going to open the cell doors and let us out!"
+</P>
+
+<P>
+"But how can we get past the other guards, upstairs?" asked Ned.
+</P>
+
+<P>
+"We're not going that way," explained Mr. Petrofsky. "There is a secret
+exit from this corridor, through a tunnel that connects with a large
+salt mine. Once we are in there we can make our way out. We'll soon be
+free."
+</P>
+
+<P>
+"Ask him if he's heard anything of my airship?" asked Tom. Mr.
+Petrofsky put the question rapidly in Russian and then translated the
+answer.
+</P>
+
+<P>
+"It's in the same place."
+</P>
+
+<P>
+"Hurray!" cried Tom.
+</P>
+
+<P>
+Working rapidly, the Nihilist guard soon had the cell doors open, for
+he had the keys, and our friends stepped out into the corridor.
+</P>
+
+<P>
+"This way," called Ivan Petrofsky, as he followed their liberator, who
+spoke in whispers. "He says he will lead us to the salt mine, tell us
+how to get out and then he must make his own escape."
+</P>
+
+<P>
+"Then he isn't coming with us?" asked Ned.
+</P>
+
+<P>
+"No, it would not be safe. But he will tell us how to get out. It seems
+that years ago some prisoners escaped this way, and the authorities
+closed up the tunnel. But a cave-in of the salt mine opened a way into
+it again."
+</P>
+
+<P>
+They followed their queer guide, who led them down the corridor. He
+paused at the end, and then, diving in behind a pile of rubbish, he
+pulled away some boards. A black opening, barely large enough for a man
+to walk in upright, was disclosed.
+</P>
+
+<P>
+"In there?" cried Tom.
+</P>
+
+<P>
+"In there," answered Mr. Petrofsky. He and the guard murmured their
+good-byes, and then, with a lighted candle the faithful Nihilist had
+provided, and with several others in reserve, our friends stepped into
+the blackness. They could hear the board being pulled back into place
+behind them.
+</P>
+
+<P>
+"Forward!" cried the exile, and forward they went.
+</P>
+
+<P>
+It was not a pleasant journey, being through an uneven tunnel in the
+darkness. Half a mile later they emerged into a large salt mine, that
+seemed to be directly beneath the town. Work in this part had been
+abandoned long ago, all the salt there was left being in the shape of
+large pillars, that supported the roof. It sparkled dully in the candle
+light.
+</P>
+
+<P>
+"Now let me see if I remember the turnings," murmured Mr. Petrofsky.
+"He said to keep on for half an hour, and we would come out in a little
+woods not far from where our airship was anchored."
+</P>
+
+<P>
+Twisting and turning, here and there in the semi-darkness, stumbling,
+and sometimes falling over the uneven floor, the little party went on.
+</P>
+
+<P>
+"Did you say half an hour?" asked Tom, after a while.
+</P>
+
+<P>
+"Yes," replied the Russian.
+</P>
+
+<P>
+"We've been longer than that," announced the young inventor, after a
+look at his watch. "It's over an hour."
+</P>
+
+<P>
+"Bless my timetable!" cried Mr. Damon.
+</P>
+
+<P>
+"Are you sure?" asked Mr. Petrofsky.
+</P>
+
+<P>
+"Yes," answered Tom in a low voice.
+</P>
+
+<P>
+The Russian looked about him, flashing the candle on several turnings
+and tunnels. Suddenly Ned uttered a cry.
+</P>
+
+<P>
+"Why, we passed this place a little while before!" he said. "I remember
+this pillar that looks like two men wrestling!"
+</P>
+
+<P>
+It was true. They all remembered it when they saw it again.
+</P>
+
+<P>
+"Back in the same place!" mused the Russian. "Then we have doubled on
+our tracks. I'm afraid we're lost!"
+</P>
+
+<P>
+"Lost in a Russian salt mine!" gasped Tom, and his words sounded
+ominous in that gloomy place.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap20"></A>
+<H3 ALIGN="center">
+CHAPTER XX
+</H3>
+
+<H3 ALIGN="center">
+THE ESCAPE
+</H3>
+
+<P>
+For a space of several seconds no one moved or spoke. In the flickering
+light of the candle they looked at one another, and then at the
+fantastic pillars of salt all about them. Then Mr. Damon started
+forward.
+</P>
+
+<P>
+"Bless my trolley car!" he exclaimed. "It isn't possible! There must be
+some mistake. If we'll keep on we'll come out all right. You know your
+way about, don't you, Mr. Petrofsky?"
+</P>
+
+<P>
+"I thought I did, from what the guard told us, but it seems I must have
+taken a wrong turning."
+</P>
+
+<P>
+"Then it's easily remedied," suggested Tom "All we'll have to do will
+be to go to the place where we started, and begin over again."
+</P>
+
+<P>
+"Of course," agreed Ned, and they all seemed more cheerful.
+</P>
+
+<P>
+"And if we start out once more, and get lost again, then what?" asked
+Mr. Damon.
+</P>
+
+<P>
+"Well, if worst comes to worst, we can go, back in the tunnel, go to
+our cells and ask the guard to come with us and show us the way went on
+Tom.
+</P>
+
+<P>
+"Never!" cried the exile. "It would be the most dangerous thing in the
+world to go back to the prison. Our escape has probably been discovered
+by this time, and to return would only be to put our heads in the
+noose. We must keep on at any cost!"
+</P>
+
+<P>
+"But if we can't get out," suggested Tom, "and if we haven't anything
+to eat or drink, we&mdash;"
+</P>
+
+<P>
+He did not finish, but they all knew what he meant.
+</P>
+
+<P>
+"Oh, we'll get out!" declared Ned, who was something of an optimist.
+"You've been in salt mines before, haven't you, Mr. Petrofsky?"
+</P>
+
+<P>
+"Yes, I was condemned to one once, but it was not in this part of the
+country, and it was not an abandoned one. I imagine this was only an
+isolated mine, and that there are no others near it, so when they
+abandoned it, after all the salt was taken out, most people forgot
+about it. I remember once a party of prisoners were lost in a large
+salt mine, and were missed for several days."
+</P>
+
+<P>
+"What happened to them?" asked Tom.
+</P>
+
+<P>
+"I don't like to talk about it," replied the Russian with a shudder.
+</P>
+
+<P>
+"Bless my soul! Was it as bad as that?" asked Mr. Damon.
+</P>
+
+<P>
+"It was," replied the exile. "But now let's see if we can find our way
+back, and start afresh. I'll be more careful next time, and watch the
+turns more closely."
+</P>
+
+<P>
+But he did not get the chance. They could not find the tunnel whence
+they had started. Turn after turn they took, down passage after passage
+sometimes in such small ones that they almost had to crawl.
+</P>
+
+<P>
+But it was of no use. They could not find their way back to the
+starting place, and they could not find the opening of the mine. They
+had used two of the slow burning candles and they had only half a dozen
+or so left. When these were gone&mdash;
+</P>
+
+<P>
+But they did not like to think of that, and stumbled on and on. They
+did not talk much, for they were too worried. Finally Ned gasped:
+</P>
+
+<P>
+"I'd give a good deal for a drink of water."
+</P>
+
+<P>
+"So would I," added his chum. "But what's the use of wishing? If there
+was a spring down here it would be salt water. But I know what I would
+do&mdash;if I could."
+</P>
+
+<P>
+"What?" asked Mr. Damon.
+</P>
+
+<P>
+"Go back to the prison. At least we wouldn't starve there, and we'd
+have something to drink. If they kept us we know we could get
+free&mdash;sometime."
+</P>
+
+<P>
+"Perhaps never!" exclaimed Ivan Petrofsky. "It is better to keep on
+here, and, as for me, I would rather die here than go back to a Russian
+prison. We must&mdash;we shall get out!"
+</P>
+
+<P>
+But it was idle talk. Gradually they lost track of time as they
+staggered on, and they hardly knew whether a day had passed or whether
+it was but a few hours since they had been lost.
+</P>
+
+<P>
+Of their sufferings in that salt mine I shall not go into details.
+There are enough unpleasant things in this world without telling about
+that. They must have wandered around for at least a day and a half,
+and in all that while they had not a drop of water, and not a thing to
+eat. Wait, though, at last in their desperation they did gnaw the
+tallow candles, and that served to keep them alive, and, in a measure,
+alleviate their awful sufferings from thirst.
+</P>
+
+<P>
+Back and forth they wandered, up and down in the galleries of the old
+salt mine. They were merely hoping against hope.
+</P>
+
+<P>
+"It's worse than the underground city of gold," said Ned in hollow
+tones, as he staggered on. "Worse&mdash;much worse." His head was feeling
+light. No one answered him.
+</P>
+
+<P>
+It was, as they learned later, just about two days after the time when
+they entered the mine that they managed to get out. Forty-eight hours,
+most of them of intense suffering. They were burning their last candle,
+and when that was out they knew they would have the horrors of darkness
+to fight against, as well as those of hunger and thirst.
+</P>
+
+<P>
+But fate was kind to them. How they managed to hit on the right gallery
+they did not know, but, as they made a turn around an immense pillar of
+salt Tom, who was walking weakly in advance, suddenly stopped.
+</P>
+
+<P>
+"Look! Look!" he whispered. "Another candle! Someone&mdash;someone is
+searching for us! We are saved!"
+</P>
+
+<P>
+"It may be the police!" said Ned.
+</P>
+
+<P>
+"That is not a candle," spoke the Russian in hollow tones as he looked
+to where Tom pointed, to a little glimmer of light. "It is a star.
+Friends, we are saved, and by Providence! That is a star, shining
+through the opening of the mine. We are saved!"
+</P>
+
+<P>
+Eagerly they pressed forward, and they had not gone far before they
+knew that the exile was right. They felt the cool night wind on their
+hot cheeks.
+</P>
+
+<P>
+"Thank heaven!" gasped Tom, as he pushed on.
+</P>
+
+<P>
+A moment later, climbing over the rusted rails on which the mine cars
+had run with their loads of salt, they staggered into the open. They
+were free&mdash;under the silent stars!
+</P>
+
+<P>
+"And now, if we can only find the airship," said Tom faintly, "we can&mdash;"
+</P>
+
+<P>
+"Look there!" whispered Ned, pointing to a patch of deeper blackness
+that the surrounding night. "What's that."
+</P>
+
+<P>
+"The Falcon!" gasped Tom. He started toward her, for she was but a
+short distance from a little clump of trees into which they had emerged
+from the opening of the salt mine. There, on the same little plane
+where they had landed in her was the airship. She had not been moved.
+</P>
+
+<P>
+"Wait!" cautioned Ivan Petrofsky. "She may be guarded."
+</P>
+
+<P>
+Hardly had he spoken than there walked into the faint starlight on the
+side of the ship nearest them, a Cossack soldier with his rifle over
+his shoulder.
+</P>
+
+<P>
+"We can't get her!" gasped Ned.
+</P>
+
+<P>
+"We've got to get her!" declared Tom. "We'll die if we don't!"
+</P>
+
+<P>
+"But the guards! They'll arrest us!" said the exile.
+</P>
+
+<P>
+An instant later a second soldier joined the first, and they could be
+seen conversing. They then resumed their pacing around the anchored
+craft. Evidently they were waiting for the escaped prisoners to come up
+when they would give the alarm and apprehend them.
+</P>
+
+<P>
+"What can we do?" asked Mr. Damon.
+</P>
+
+<P>
+"I have a plan," said Tom weakly. "It's the only chance, for we're not
+strong enough to tackle them. Every time they go around on the far side
+of the airship we must creep forward. When they come on this side we'll
+lie down. I doubt if they can see us. Once we are on hoard we can cut
+the ropes, and start off. Everything is all ready for a start if they
+haven't monkeyed with her, and I don't think they have. We've got room
+enough to run along as an aeroplane and mount upward. It's our only
+hope."
+</P>
+
+<P>
+The others agreed, and they put the plan into operation. When the
+Cossack guards were out of sight the escaped prisoners crawled forward,
+and when the soldiers came into view our friends waited in silence.
+</P>
+
+<P>
+It took several minutes of alternate creeping and waiting to do this,
+but it was accomplished at last and unseen they managed to slip aboard.
+Then it was the work of but a moment to cut the restraining ropes.
+</P>
+
+<P>
+Silently Tom crept to the motor room. He had to work in absolute
+darkness, for the gleam of a light would have drawn the fire of the
+guards. But the youth knew every inch of his invention. The only
+worriment was whether or not the motor would start up after the
+breakdown, not having been run since it was so hastily repaired. Still
+he could only try.
+</P>
+
+<P>
+He looked out, and saw the guards pacing back and forth. They did not
+know that the much-sought prisoners were within a few feet of them.
+</P>
+
+<P>
+Ned was in the pilot house. He could see a clear field in front of him.
+</P>
+
+<P>
+Suddenly Tom pulled the starting lever. There was a little clicking,
+followed by silence. Was the motor going to revolve? It answered the
+next moment with a whizz and a roar.
+</P>
+
+<P>
+"Here we go!" cried the young inventor, as the big machine shot forward
+on her flight. "Now let them stop us!"
+</P>
+
+<P>
+Forward she went until Ned, knowing by the speed that she had momentum
+enough, tilted the elevation rudder, and up she shot, while behind, on
+the ground, wildly running to and fro, and firing their rifles, were
+the two amazed guards.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap21"></A>
+<H3 ALIGN="center">
+CHAPTER XXI
+</H3>
+
+<H3 ALIGN="center">
+THE RESCUE
+</H3>
+
+<P>
+"Have we&mdash;have we time to get a drink?" gasped Ned, when the aeroplane,
+now on a level keel, had been shooting forward about three minutes.
+Already it was beyond the reach of the rifles.
+</P>
+
+<P>
+"Yes, but take only a little," cautioned Tom. "Oh! it doesn't seem
+possible that we are free!"
+</P>
+
+<P>
+He switched on a few interior lights, and by their glow the faint and
+starving platinum-seekers found water and food. Their craft had,
+apparently, not been touched in their absence, and the machinery ran
+well.
+</P>
+
+<P>
+Cautiously they ate and drank, feeling their strength come back to
+them, and then they removed the traces of their terrible imprisonment,
+and set about in ease and comfort, talking of what they had suffered.
+</P>
+
+<P>
+Onward sped the aeroplane, onward through the night, and then Tom,
+having set the automatic steering gear, all fell into heavy slumbers
+that lasted until far into the next day.
+</P>
+
+<P>
+When the young inventor awoke he looked below and could see
+nothing&mdash;nothing but a sea of mist.
+</P>
+
+<P>
+"What's this?" he cried. "Are we above the clouds, or in a fog over
+some inland sea?"
+</P>
+
+<P>
+He was quite worried, until Ivan Petrofsky informed him that they were
+in the midst of a dense fog, which was common over that part of Siberia.
+</P>
+
+<P>
+"But where are we?" asked Ned.
+</P>
+
+<P>
+"About over the province of Irtutsk," was the answer. "We are heading
+north," he went on, as he looked at the compass, "and I think about
+right to land somewhere near where my brother is confined in the
+sulphur mine."
+</P>
+
+<P>
+"That's so; we've got to drop," said Tom. "I must get the gas pipe
+repaired. I wish we could see over what soft of a place we were so as
+to know whether it would be safe to land. I wish the mist would clear
+away."
+</P>
+
+<P>
+It did, about noon, and they noted that they were over a desolate
+stretch of country, in which it would be safe to make a landing.
+</P>
+
+<P>
+Bringing the aeroplane down on as smooth a spot as he could pick out,
+Tom and Ned were soon at work clearing out the clogged pipe of the gas
+generator. They had to take it out in the open air, as the fumes were
+unpleasant, and it was while working over it that they saw a shadow
+thrown on the ground in front of them. Startled they looked up, to see
+a burly Russian staring at them.
+</P>
+
+<P>
+The sudden appearance of a man in that lonely spot, his calm regard of
+the lads, his stealthy approach, which had made it possible for him to
+be almost upon them before they were aware of his presence, all this
+made them suspicious of danger. Tom gave a quick glance about, however,
+and saw no others&mdash;no Cossack soldiers, and as he looked a second time
+at the man he noted that he was poorly dressed, that his shoes were
+ragged, his whole appearance denoting that he had traveled far, and was
+weary and ill.
+</P>
+
+<P>
+"What do you make of this, Ned?" asked Tom, in a low voice.
+</P>
+
+<P>
+"I don't know what to make of it. He can't be an officer, in that rig,
+and he has no one with him. I guess we haven't anything to be afraid
+of. I'm going to ask him what he wants."
+</P>
+
+<P>
+Which Tom did in his plainest English. At once the man broke into a
+stream of confused Russian, and he kept it up until Tom held up his
+hand for silence.
+</P>
+
+<P>
+"I'm sorry, but I can't understand you," said the young inventor. "I'll
+call some one who can, though," and, raising his voice, he summoned
+Ivan Petrofsky who, with Mr. Damon, was inside the airship doing some
+small repairs.
+</P>
+
+<P>
+"There's a Russian out here, Mr. Petrofsky," said Tom, "and what he
+wants I can't make out."
+</P>
+
+<P>
+The exile was quickly on the scene and, after a first glance at the
+man, hurried up to him, grasped him by the hand and at once the two
+were talking such a torrent of hard-sounding words that Tom and Ned
+looked at each other helplessly, while Mr. Damon, who had come out,
+exclaimed:
+</P>
+
+<P>
+"Bless my dictionary! they must know each other."
+</P>
+
+<P>
+For several minutes the two Russians kept up their rapid-fire talk and
+then Mr. Petrofsky, evidently realizing that his friends must wonder at
+it, turned to them and said:
+</P>
+
+<P>
+"This is a very strange thing. This man is an escaped convict, as I
+once was. I recognized him by certain signs as soon as I saw him,
+though I had never met him before. There are certain marks by which a
+Siberian exile can never be forgotten," he added significantly. "He
+made his escape from the mines some time ago, and has suffered great
+hardships since. The revolutionists help him when they can, but he has
+to keep in concealment and travels from town to town as best he may. He
+has heard of our airship, I suppose from inquiries the revolutionists
+have been making in our behalf, and when he unexpectedly came upon us
+just now he was not frightened, as an ordinary peasant would have been.
+But he did not know I was aboard."
+</P>
+
+<P>
+"And does he know you?" asked Tom. "Does he know you are trying to
+rescue your brother?"
+</P>
+
+<P>
+"No, but I will tell him."
+</P>
+
+<P>
+There was another exchange of the Russian language, and it seemed to
+have a surprising result. For, no sooner had Ivan Petrofsky mentioned
+his brother, than the other, whose name was Alexis Borious seemed
+greatly excited. Mr. Petrofsky was equally so at the reply his new
+acquaintance made, and fairly shouted to Tom, Ned and Mr. Damon.
+</P>
+
+<P>
+"Friends, I have unexpected good news! It is well that we met this man
+or we would have gone many miles out of our way. My brother has been
+moved to another mine since the revolutionists located him for me. He
+is in a lonely district many miles from here. This man was in the same
+mine with him, until my brother was transferred, and then Mr. Borious
+escaped. We will have to change our plans."
+</P>
+
+<P>
+"And where are we to head for now?" asked Tom.
+</P>
+
+<P>
+"Near to the town of Haskaski, where my poor brother is working in a
+sulphur mine!"
+</P>
+
+<P>
+"Then let's get a move on!" cried Tom with enthusiasm. "Do you think
+this man will come with us, Mr. Petrofsky, to help in the rescue, and
+show us the place?"
+</P>
+
+<P>
+"He says he will," translated the exile, "though he is much afraid of
+our strange craft. Still he knows that to trust himself to it is better
+than being captured, and sent back to the mines to starve to death!"
+</P>
+
+<P>
+"Good!" cried Tom. "And if he wants to, and all goes well, we'll take
+him out of Russia with us. Now get busy, Ned, and we'll have this
+machine in shape again soon."
+</P>
+
+<P>
+While Ivan Petrofsky took his new friend inside, and explained to him
+about the workings of the Falcon, Tom and Ned labored over the gas
+machine with such good effect that by night it was capable of being
+used. Then they went aloft, and making a change in their route, as
+suggested by Mr. Borious, they headed for the desolate sulphur region.
+</P>
+
+<P>
+For several days they sailed on, and gradually a plan of rescue was
+worked out. According to the information of the newcomer, the best way
+to save Mr. Petrofsky's brother was to make the attempt when the
+prisoners were marched back from the mines to the barracks where they
+were confined.
+</P>
+
+<P>
+"It will be dark then," said Mr. Borious, "and if you can hover in your
+airship near at hand, and if Mr. Petrofsky can call out to his brother
+to run to him, we can take him up with us and get away before the
+guards know what we are doing."
+</P>
+
+<P>
+"But aren't the prisoners chained?" asked Tom.
+</P>
+
+<P>
+"No, they depend on guards to prevent escapes."
+</P>
+
+<P>
+"Then we'll try that way," decided the young inventor.
+</P>
+
+<P>
+On and on they sailed, the Falcon working admirably. Verst after verst
+was covered, and finally, one morning, Mr. Borious, who knew the
+country well, from having once been a prisoner there, said:
+</P>
+
+<P>
+"We are now near the place. If we go any closer we may be observed. We
+had better remain hidden in some grove of trees so that at nightfall we
+can go forth to the rescue."
+</P>
+
+<P>
+"But how can we find it after dark?" asked Ned.
+</P>
+
+<P>
+"You can easily tell by the lights in the barracks," was the answer. "I
+can stand in the pilot house to direct you, for nearly all these exile
+prisons are alike. The prisoners will march in a long line from the
+mine. Then for the rescue."
+</P>
+
+<P>
+It was tedious waiting that day, but it had to be done, and to Tom, who
+was anxious to effect the rescue, and proceed to the place of the winds
+to try his air glider, it seemed as if dusk would never come as they
+remained in concealment.
+</P>
+
+<P>
+But night finally approached and then the great airship went silently
+aloft, ready to hover over the prison ground. Fortunately there was
+little wind; and she could be used as a balloon, thus avoiding the
+noise of the motor.
+</P>
+
+<P>
+"The next thing I do, when I get home," remarked Tom, as they drifted
+along. "Will be to make a silent airship. I think they would be very
+useful."
+</P>
+
+<P>
+With Mr. Borious in the pilot house, to point out the way, Tom steered
+through the fast-gathering darkness. The Russian had soon become used
+to the airship, and was not at all afraid.
+</P>
+
+<P>
+"Can you go just where you want to, as a balloon?" asked the new guide.
+</P>
+
+<P>
+"No, but almost," replied Tom. "At the last moment I've got to take a
+chance and start the motor to send us just where we want to go. That's
+why I think a silent airship would be a great thing. You could get up
+on the enemy before he knew it."
+</P>
+
+<P>
+"There are the prison barracks," said the guide a little later, his
+talk being translated by Mr. Petrofsky. Below and a little ahead of
+them could been seen a cluster of lights.
+</P>
+
+<P>
+"Yes, that looks like a line of prisoners," remarked Ned, who was
+peering through a pair of night glasses.
+</P>
+
+<P>
+"Where?" asked Tom eagerly, and they were pointed out to him. He took
+an observation, and exclaimed:
+</P>
+
+<P>
+"There they are, sure enough. Now if your brother is only among them,
+Mr. Petrofsky, we'll soon have him on board."
+</P>
+
+<P>
+"Heaven grant that he may be there!" said the exile in a low voice.
+</P>
+
+<P>
+A moment later, the Falcon, meanwhile having been allowed to drift as
+close as possible to the dimly-seen line of prisoners, Tom set in
+motion the great motor, the propeller blades heating the air fiercely.
+</P>
+
+<P>
+At the sound there was a shout on the ground below, but before the
+excitement had time to spread, or before any of the guards could form a
+notion of what was about to take place, Tom had sent his craft to earth
+on a sharp slant, closer to the line of prisoners than he had dared to
+hope.
+</P>
+
+<P>
+Mr. Petrofsky sprang out on deck, and in a loud voice called in Russian:
+</P>
+
+<P>
+"Peter! Peter! If you are there, come here! Come quickly! It is I, your
+brother Ivan who speaks. I have come to save you&mdash;save you in the
+wonderful airship of Tom Swift! Come quickly and we will take you away!
+Peter Petrofsky!"
+</P>
+
+<P>
+For a moment there was silence, and then the sound of some one running
+rapidly was borne to the ears of the waiting ones. It was followed, a
+moment later, by angry shouts from the guards.
+</P>
+
+<P>
+"Quick! Quick, Peter!" cried the brother, "over this way!"
+</P>
+
+<P>
+For an instant only the exile showed a single electric flash light,
+that his brother might see in which direction to run. The echo of the
+approaching footsteps came nearer, the shouts of the guards redoubled,
+and then came the sound of many men running in pursuit.
+</P>
+
+<P>
+"Hurry, Peter, hurry!" cried Mr. Petrofsky, and, as he spoke in Russian
+the guards, of course, understood.
+</P>
+
+<P>
+Suddenly a rifle shot rang out, but the weapon seemed to have been
+fired in the air. A moment later a dark figure clambered aboard the
+airship.
+</P>
+
+<P>
+"Peter, is it you?" cried Ivan Petrofsky, hoarsely.
+</P>
+
+<P>
+"Yes, brother! But get away quickly or the whole guard will be swarming
+about here!"
+</P>
+
+<P>
+"Praise the dear Lord you are saved!"
+</P>
+
+<P>
+"Is it all right?" cried Tom, who wanted to make sure they were saving
+the right man.
+</P>
+
+<P>
+"Yes! Yes, Tom! Go quickly!" called Ivan Petrofsky, as he folded his
+brother in his arms. A moment later, with a roar, the Falcon shot away
+from the earth, while below sounded angry cries, confused shouts and
+many orders, for the guards and their officers had never known of such
+a daring rescue as this.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap22"></A>
+<H3 ALIGN="center">
+CHAPTER XXII
+</H3>
+
+<H3 ALIGN="center">
+IN THE HURRICANE
+</H3>
+
+<P>
+There was a volley of shots from the prison guards, and the flashes of
+the rifles cut bright slivers of flame in the darkness, but, so rapidly
+did the airship go up, veering off on a wide slant, under the skillful
+guidance of Tom that the shots did no harm.
+</P>
+
+<P>
+"Bless my bullet pouch!" cried Mr. Damon. "They must be quite excited."
+</P>
+
+<P>
+"Shouldn't wonder," calmly observed Ned, as he went to help his chum in
+managing the airship. "But it won't do them any good. We've got our
+man."
+</P>
+
+<P>
+"And right from under their noses, too," added Ivan Petrofsky
+exultingly. "This rescue of an exile will go down in the history of
+Russia."
+</P>
+
+<P>
+The two exile brothers were gazing fondly at each other, for now that
+the Falcon was so high, Tom ventured to turn on the lights.
+</P>
+
+<P>
+A moment later the three Russians were excitedly conversing, while Tom
+and Ned managed the craft, and Mr. Damon, after listening a moment to
+the rapid flow of the strange language, which quite fascinated him,
+hurried to the galley to prepare a meal for the rescued one, who had
+been taken away before he had had a chance to get his supper.
+</P>
+
+<P>
+His wonder at his startling and unexpected rescue may well be imagined,
+but the joy at being reunited to his brother overshadowed everything
+for the time being. But when he had a chance to look about, and see
+what a strange craft he was in, his amazement knew no bounds, and he
+was like a child. He asked countless questions, and Ivan Petrofsky and
+Mr. Borious took turns in answering them. And from now on, I shall give
+the conversation of the two new Russians just as if they spoke English,
+though of course it had to be translated by Ivan Petrofsky, Peter's
+brother.
+</P>
+
+<P>
+If Peter was amazed at being rescued in an airship, his wonder grew
+when he was served with a well-cooked meal, while high in the air, and
+while flying along at the rate of fifty miles an hour. He could not
+talk enough about it.
+</P>
+
+<P>
+By degrees the story of how Tom and his friends had started for Russia
+was told, and there was added the detail of how Mr. Borious came to be
+picked up.
+</P>
+
+<P>
+"But brother Ivan, you did not come all that distance to rescue me; did
+you?" asked Peter.
+</P>
+
+<P>
+"Yes, partly, and partly to find the platinum mine."
+</P>
+
+<P>
+"What? The lost mine that you and I stumbled upon in that terrible
+storm?"
+</P>
+
+<P>
+"That is the one, Peter."
+</P>
+
+<P>
+"Then, Tom Swift may as well return. I doubt if we can even locate the
+district where it was, and if we did find it, the winds blow so that
+even this magnificent ship could not weather the gales."
+</P>
+
+<P>
+"I guess he doesn't understand about my air glider," said Tom with a
+smile, when this was translated to him. "I wish I had a chance to put
+it together, and show him how it works."
+</P>
+
+<P>
+"Oh, it will work all right," replied Ned, who was very proud of his
+friend's inventive ability.
+</P>
+
+<P>
+"Now, what is the next thing to be done?" asked Tom, a little later
+that evening, when, supper having been served, they were sitting in the
+main cabin, talking over the events of the past few days. "I'd like to
+get on the track of that platinum treasure."
+</P>
+
+<P>
+"And we will do all in our power to aid you," said Ivan Petrofsky. "My
+brother and I owe much to you&mdash;in fact Peter owes you his life; do you
+not?" and he turned to him.
+</P>
+
+<P>
+"I do," was the firm answer.
+</P>
+
+<P>
+"Oh, nonsense!" exclaimed Tom, who did not like to be praised. "I
+didn't do much."
+</P>
+
+<P>
+"Much! You do not call taking me away from that place&mdash;that sulphur
+mine&mdash;that horrible prison barrack with the cruel guards&mdash;you do not
+call that much? My friend," spoke the Russian solemnly, "no one on
+earth has done so much for me as you have, and if it is the power of
+man to show you where that lost mine is, my brother and I will do so!"
+</P>
+
+<P>
+"Agreed," spoke Ivan quietly.
+</P>
+
+<P>
+"Then what plans shall we make?" asked Tom, after a little more talk.
+"Are we to go about indiscriminately, or is there any possible way of
+getting on the trail?"
+</P>
+
+<P>
+"My brother and I will try and decide on a definite route," spoke Ivan
+Petrofsky. "It is some time since I have seen him, and longer since we
+accidently found the mine together, but we will consult each other,
+and, if possible make some sort of a map."
+</P>
+
+<P>
+This was done the next day, the present maps aboard the Falcon being
+consulted, and the brothers comparing notes. They began to lay out a
+stretch of country in which it was most likely the lost mine lay. It
+took several days to do this, for sometimes one brother would forget
+some point, and again the other would. But at last they agreed on
+certain facts.
+</P>
+
+<P>
+"This is the nearest we can come to it," said Ivan Petrofsky to Tom.
+"The lost platinum mine lies somewhere between the city of Iakutsk and
+the first range of the Iablonnoi mountains. Those are the northern and
+southern boundaries. As for the western one, it is most likely the Lena
+river, and the eastern one the Amaga river. So you see you have quite a
+large stretch of country to search, Tom Swift."
+</P>
+
+<P>
+"Yes, I should say I had," agreed the young inventor. "But I have had
+harder tasks. Now that I know where to head for I'll get there as soon
+as possible."
+</P>
+
+<P>
+"And what will you do when you arrive?" asked Ned.
+</P>
+
+<P>
+"Fly about in the Falcon, in ever-widening circles, starting as near
+the centre of that area as possible," replied Tom. "And as soon as I
+run into a steady hurricane I'll know that I'm at the place of the big
+winds, and I'll get out my glider, for I'll be pretty sure to be near
+the place."
+</P>
+
+<P>
+"Bless my gas meter!" cried Mr. Damon. "That's the talk!"
+</P>
+
+<P>
+Tom put his plan into operation at once, by heading the nose of his
+craft for the desolate region mapped out by the Russian brothers.
+</P>
+
+<P>
+The days that followed were filled with weary searching. It was like
+the time when they had sought for the plain of the great ruined Temple
+in Mexico, that they might locate the underground city of gold. Only in
+this case they had no such landmark as a great Aztec ruin to guide them.
+</P>
+
+<P>
+What they were seeking for was something unseen, but which could be
+felt&mdash;a mysterious wind&mdash;a wind that might be encountered any time, and
+which might send the Falcon to the earth a wreck.
+</P>
+
+<P>
+The Russian brothers, staggering about in the storm, had seen the mine
+under different conditions from what it would be viewed now. Then it
+was winter in Siberia. Now it was summer, though it was not very warm.
+</P>
+
+<P>
+On and on sailed the Falcon. The weather could not have been better,
+but for once Tom wanted bad weather. He wanted a blow&mdash;the harder the
+better&mdash;and all eyes anxiously watched the anemometer, or wind gage.
+But ever it revolved lazily about in the gentle breeze.
+</P>
+
+<P>
+"Oh, for a hurricane!" cried Tom.
+</P>
+
+<P>
+He got his wish sooner than he anticipated. It was about two days after
+this, when they were going about in a great circle, about two hundred
+miles from the imaginary centre of the district in which the mine lay,
+that, as Mr. Damon was getting dinner a dish he was carrying to the
+table was suddenly whisked out of his hand.
+</P>
+
+<P>
+"I say, what's the matter?" he cried. "Bless my&mdash;"
+</P>
+
+<P>
+But he had no time to say more. The airship fairly stood on end, and
+then, turning completely about, was rapidly driven in the opposite
+direction, though her propellers were working rapidly.
+</P>
+
+<P>
+"What's up?" yelled Ned.
+</P>
+
+<P>
+"We are capsizing!" shouted Ivan Petrofsky, and indeed it seemed so,
+for the airship was being forced over.
+</P>
+
+<P>
+"I guess we've struck what we want!" cried Tom. "We're in a hurricane
+all right! This is the place of the big wind! Now for my air glider, if
+I can get the airship to earth without being wrecked! Ned, lend a hand!
+We've got our work cut out for us now!"
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap23"></A>
+<H3 ALIGN="center">
+CHAPTER XXIII
+</H3>
+
+<H3 ALIGN="center">
+THE LOST MINE
+</H3>
+
+<P>
+For several moments it seemed as if disaster would overtake the little
+band of platinum-hunters. In spite of all that Tom and Ned could do,
+the Falcon was whipped about like a feather in the wind. Sometimes she
+was pointing her nose to the clouds, and again earthward. Again she
+would be whirling about in the grip of the hurricane, like some
+fantastic dancer, and again she would roll dangerously. Had she turned
+turtle it probably would have been the last of her and of all on board.
+</P>
+
+<P>
+"Yank that deflecting lever as far down as it will go!" yelled Tom to
+his chum.
+</P>
+
+<P>
+"I am. She won't go any farther."
+</P>
+
+<P>
+"All right, hold her so. Mr. Damon, let all the gas out of the bag. I
+want to be as heavy as possible, and get to earth as soon as we can."
+</P>
+
+<P>
+"Bless my comb and brush!" cried the odd man. "I don't know what's
+going to become of us."
+</P>
+
+<P>
+"You will know, pretty soon, if the gas isn't let out!" retorted Tom
+grimly, and then Mr. Damon hastened to the generator compartment, and
+opened the emergency outlet.
+</P>
+
+<P>
+Finally, by crowding on all the possible power, so that the propellers
+and deflecting rudders forced the craft down, Tom was able to get out
+of the grip of the hurricane, and landed just beyond the zone of it on
+the ground.
+</P>
+
+<P>
+"Whew! That was a narrow squeak!" cried Ned, as he got out. "How'd you
+do it, Tom?"
+</P>
+
+<P>
+"I hardly know myself. But it's evident that we're on the right spot
+now."
+</P>
+
+<P>
+"But the wind has stopped blowing," said Mr. Damon. "It was only a
+gust."
+</P>
+
+<P>
+"It was the worst kind of a gust I ever want to see," declared the
+young inventor. "My air glider ought to work to perfection in that. If
+you think the wind has died out, Mr. Damon, just walk in that
+direction," and Tom pointed off to the left.
+</P>
+
+<P>
+"Bless my umbrella, I will," was the reply and the odd man started off.
+He had not gone far, before he was seen to put his hand to his cap.
+Still he kept on.
+</P>
+
+<P>
+"He's getting into the blow-zone," said Tom in a low voice.
+</P>
+
+<P>
+The next moment Mr. Damon was seen to stagger and fall, while his cap
+was whisked from his head, and sent high into the air, almost instantly
+disappearing from sight.
+</P>
+
+<P>
+"Some wind that," murmured Ned, in rather awe-struck tones.
+</P>
+
+<P>
+"That's so," agreed his chum. "But we'd better help Mr. Damon," for
+that gentleman was slowly crawling back, not caring to trust himself on
+his feet, for the wind had actually carried him down by its force.
+</P>
+
+<P>
+"Bless my anemometer!" he gasped, when Tom and Ned had given him a hand
+up. "What happened?"
+</P>
+
+<P>
+"It was the great wind," explained Tom. "It blows only in a certain
+zone, like a draft down a chimney. It is like a cyclone, only that goes
+in a circle. This is a straight wind, but the path of it seems to be as
+sharply marked as a trail through the forest. I guess we're here all
+right. Does this location look familiar to you?" he asked of the
+Russian brothers.
+</P>
+
+<P>
+"I can't say that it does," answered Ivan. "But then it was winter when
+we were here."
+</P>
+
+<P>
+"And, another thing," put in Peter. "That wind zone is quite wide. The
+mine may be in the middle, or near the other edge."
+</P>
+
+<P>
+"That's so," agreed Tom. "We'll soon see what we can do. Come on, Ned,
+let's get the air glider out and put her together. She'll have a test
+as is a test, now."
+</P>
+
+<P>
+I shall not describe the tedious work of re-assembling Tom Swift's
+latest invention in the air craft line&mdash;his glider. Sufficient to say
+that it was taken out from where it had been stored in separate pieces
+on board the Falcon, and put together on the plain that marked the
+beginning of the wind zone.
+</P>
+
+<P>
+It was a curious fact that twenty feet away from the path of the wind
+scarcely a breeze could be felt, while to advance a little way into it
+meant that one would at once be almost carried off his feet.
+</P>
+
+<P>
+Tom tested the speed of it one day with a special anemometer, and found
+that only a few hundred feet inside the zone the wind blew nearly one
+hundred miles an hour.
+</P>
+
+<P>
+"What is it like inside, I wonder?" asked Ned.
+</P>
+
+<P>
+"It must be terrific," was his chum's opinion.
+</P>
+
+<P>
+"Dare you risk it, Tom?"
+</P>
+
+<P>
+"Of course. The harder it blows the better the glider works. In fact I
+can't make much speed in a hundred-mile wind for with us all on board
+the craft will be heavy, and you must remember that I depend on the
+wind alone to give me motion."
+</P>
+
+<P>
+"What do you think causes the wind to blow so peculiarly here Tom?"
+went on Ned.
+</P>
+
+<P>
+"Oh, it must be caused by high mountain ranges on either side, or the
+effects of heat and cold, the air being evaporated over a certain area
+because of great heat, say a volcano, or something like that; though I
+don't know that they have volcanoes here. That creates a vacuum, and
+other air rushes in to fill the vacant space. That's all wind is,
+anyhow, air rushing in to fill a vacuum, or low pressure zone, for you
+remember that nature abhors a vacuum."
+</P>
+
+<P>
+It took nearly a week to assemble the Vulture, as Tom had named his
+latest craft, from the fact that it could hover in the air motionless,
+like that great bird. At last it was completed and then, weights being
+taken aboard to steady it, all was ready for the test. Tom would have
+liked to have taken all his passengers in the glider, for it would work
+better then, but the three Russians were timid, though they promised to
+get aboard after the trial.
+</P>
+
+<P>
+The test came off early one morning, Tom, Ned and Mr. Damon being the
+only ones aboard. Bags of sand represented the others. The glider was
+wheeled to the edge of the wind zone and they took their places in the
+car. It was hard work for the gale, that had never ceased blowing for
+an instant since they found its zone, was very strong. But the glider
+remained motionless in it, for the wing planes, the rudders, and
+equalizing weights had been adjusted to make the strain of the wind
+neutral.
+</P>
+
+<P>
+"All ready?" asked Tom, when his chum and his friend were in the
+enclosed car of the glider.
+</P>
+
+<P>
+"As ready as I ever shall be," answered Ned.
+</P>
+
+<P>
+"Bless my suspenders! Let her go, Tom, and have it over with!" cried
+the odd man.
+</P>
+
+<P>
+The young inventor pulled a lever, and almost instantly the glider
+darted forward. A moment later it soared aloft, and the three Russians
+cheered. But their voices were lost in the roar of the hurricane, as
+Tom sent his craft higher and higher.
+</P>
+
+<P>
+It worked perfectly, and he could direct it almost anywhere. The wind
+acted as the motive power, the bending and warping wings, and the
+rudders and weights controlling its force.
+</P>
+
+<P>
+"I'm going higher, and see if I can remain stationary!" yelled Tom in
+Ned's ear. His chum only nodded. Mr. Damon was seated on a bench,
+clinging to the sides of it as if he feared he would fall off.
+</P>
+
+<P>
+Higher and higher went the Vulture, ever higher, until, all at once,
+Tom pulled on another lever and she was still. There she hung in the
+air, the wind rushing through her planes, but the glider herself as
+still and quiet as though she rested on the ground in a calm. She
+hardly moved a foot in either direction, and yet the wind, as evidenced
+by the anemometer was howling along at a hundred and twenty miles an
+hour!
+</P>
+
+<P>
+"Success!" cried Tom. "Success! Now we can lie stationary in any spot,
+and spy out the land through our telescope. Now we will find the lost
+platinum mine!"
+</P>
+
+<P>
+"Well, I'm not deaf," responded Ned with a smile, for Tom had fairly
+yelled as he had at the start, and there was no need of this now, for
+though the wind blew harder than ever it was not opposed to any of the
+weights or planes, and there was only a gentle humming sound as it
+rushed through the open spaces of the queer craft.
+</P>
+
+<P>
+Tom gave his glider other and more severe tests, and she answered every
+one. Then he came to earth.
+</P>
+
+<P>
+"Now we'll begin the search," he said, and preparations were made to
+that end. The Russians, now that they had seen how well the craft
+worked, were not afraid to trust themselves in her.
+</P>
+
+<P>
+As I have explained, there was an enclosed car, capable of holding six.
+In this were stores, supplies and food sufficient for several days.
+Tom's plan was to leave the airship anchored on the edge of the wind
+zone, as a sort of base of supplies or headquarters. From there he
+intended to go off from time to time in the wind-swept area to look for
+the lost mine.
+</P>
+
+<P>
+There were weary days that followed. Hour after hour was spent in the
+air in the glider, the whole party being aboard. Observation after
+observation was taken, sometimes a certain strata of wind enabling them
+to get close enough to the earth to use their eyes, while again they
+had to use the telescopes. They covered a wide section but as day after
+day passed, and they were no nearer their goal, even Tom optimistic as
+he usually was, began to have a tired and discouraged look.
+</P>
+
+<P>
+"Don't you see anything like the place where you found the mine?" he
+asked of the exile brothers.
+</P>
+
+<P>
+They could only shake their heads. Indeed their task was not easy, for
+to recognize the place again was difficult.
+</P>
+
+<P>
+More than a week passed. They had been back and forth to their base of
+supplies at the airship, often staying away over night, once remaining
+aloft all through the dark hours in the glider, in a fierce gale which
+prevented a landing. They ate and slept on board, and seldom descended
+unless at or near the place where they had left the Falcon. Once they
+completely crossed the zone of wind, and came to a calm place on the
+other side. It was as wild and desolate as the other edge.
+</P>
+
+<P>
+Nearly two weeks had passed, and Tom was almost ready to give up and go
+back home. He had at least accomplished part of his desire, to rescue
+the exile, and he had even done better than originally intended, for
+there was Mr. Borious who had also been saved, and it was the intention
+of the young inventor to take him to the United States.
+</P>
+
+<P>
+"But the platinum treasure has me beat, I guess," said Tom grimly. "We
+can't seem to get a trace of it."
+</P>
+
+<P>
+Night was coming on, and he had half determined to head back for the
+airship. Ivan Petrofsky was peering anxiously down at the desolate
+land, over which they were gliding. He and his brother took turns at
+this.
+</P>
+
+<P>
+They were not far above the earth, but landmarks, such as had to be
+depended on to locate the mine, could not readily be observed without
+the glass. Mr. Damon, with a pair of ordinary field glasses, was doing
+all he could to pick out likely spots, though it was doubtful if he
+would know the place if he saw it.
+</P>
+
+<P>
+However, as chance willed it, he was instrumental in bringing the quest
+to a close, and most unexpectedly. Peter Petrofsky was relieving his
+brother at the telescope, when the odd man, who had not taken his eyes
+from the field glasses, suddenly uttered an exclamation.
+</P>
+
+<P>
+"Bless my tooth-brush!" he cried. "That's a most desolate place down
+there. A lot of trees blown down around a lake that looks as black as
+ink."
+</P>
+
+<P>
+"What's that!" cried Ivan Petrofsky. "A lake as black as ink? Where?"
+</P>
+
+<P>
+"We just passed it!" replied Mr. Damon.
+</P>
+
+<P>
+"Then put back there, as soon as you can, Tom!" called the Russian. "I
+want to look at that place."
+</P>
+
+<P>
+With a long, graceful sweep the young inventor sent the glider back
+over the course. Ivan Petrofsky glued his eyes to the telescope. He
+picked out the spot Mr. Damon had referred to, and a moment later cried:
+</P>
+
+<P>
+"That's it! That's near the lost platinum mine! We've found it again,
+Tom&mdash;everybody! Don't you remember, Peter," he said turning to his
+brother, "when we were lost in the snow we crawled in among a tangle of
+trees to get out of the blast. There was a sheet of white snow near
+them, and you broke through into water. I pulled you out. That must
+have been a lake, though it was lightly frozen over then. I believe
+this is the lost mine. Go down, Tom! Go down!"
+</P>
+
+<P>
+"I certainly will!" cried the youth, and pulling on the descending
+lever he shunted the glider to earth.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap24"></A>
+<H3 ALIGN="center">
+CHAPTER XXIV
+</H3>
+
+<H3 ALIGN="center">
+THE LEAKING TANKS
+</H3>
+
+<P>
+Like a bird descending from some dizzy height, the Vulture landed close
+to the pool of black water. It was a small lake and the darkness must
+have been caused by its depth, for later when they took some out in a
+glass it was as clear as a crystal. Then, too, there might have been
+black rocks on the bottom.
+</P>
+
+<P>
+"Can it be possible that we are here at last?" cried Tom, above the
+noise of the gale, for the wind was blowing at a terrific rate. But our
+friends knew better now how to adjust themselves to it, and the lake
+was down in a valley, the sides of which cut off the power of the gale.
+As for the glider it was only necessary to equalize the balance and it
+would remain stationary in any wind.
+</P>
+
+<P>
+"This is the place! This is the place!" cried Ivan Petrofsky. "Don't
+you remember, Peter?"
+</P>
+
+<P>
+"Indeed I do! I have good cause to! This is where we found the
+platinum!"
+</P>
+
+<P>
+"Bless my soul!" cried Mr. Damon. "Where is it, in the lake?"
+</P>
+
+<P>
+"The mine itself is just beyond that barrier of broken and twisted
+trees," replied the elder Russian brother. "It is an irregular opening
+in the ground, as though once, centuries ago, an ancient people tried
+to get out the precious metal. We will go to it at once."
+</P>
+
+<P>
+"But it is getting late," objected Ned.
+</P>
+
+<P>
+"No matter," said Tom. "If we find any platinum we'll stay here all
+night, and longer if necessary to get a good supply. This is better
+than the city of gold, for we're in the open."
+</P>
+
+<P>
+"I should say we were," observed Mr. Damon, as he bent to the blast,
+which was strong, sheltered even as they were.
+</P>
+
+<P>
+"Will it be safe to remain all night?" asked Mr. Borious, with a glance
+about the desolate country.
+</P>
+
+<P>
+"We have plenty of food," replied Tom, "and a good place to stay, in
+the car of the glider. I don't believe we'll be attacked."
+</P>
+
+<P>
+"No, not here," said the elder Petrofsky. "But we still have to go back
+across Siberia to escape."
+</P>
+
+<P>
+"We'll do it!" cried Tom. "Now for the platinum treasure!"
+</P>
+
+<P>
+They went forward, and it was no easy work. For the wind still blew with
+tremendous force though nothing like what it did higher up. And the
+ground was uneven. They had to cling to each other and it was very
+evident that no airship, not even the powerful Falcon, could have
+reached the place. Only an air glider would answer.
+</P>
+
+<P>
+It took them half an hour to get to the opening of the ancient mine,
+and by that time it was nearly dark. But Tom had thought to bring
+electric torches, such as he had used in the underground city of gold,
+and they dispelled the gloom of the small cavern.
+</P>
+
+<P>
+"Will you go in?" asked Ivan Petrofsky, when they had come to the
+place. He looked at Tom.
+</P>
+
+<P>
+"Go in? Of course I'll go in!" cried our hero, stepping forward. The
+others followed. For some time they went on, and saw no traces of the
+precious metal. Then Ned uttered a cry, as he saw some dull, grayish
+particles imbedded in the earth walls of the shaft.
+</P>
+
+<P>
+"Look!" he cried.
+</P>
+
+<P>
+Tom was at his chum's side in a moment.
+</P>
+
+<P>
+"That's platinum!" cried the young inventor. "And of the very highest
+grade! But the lumps are very small."
+</P>
+
+<P>
+"There are larger ones beyond," said the younger Russian brother.
+</P>
+
+<P>
+Forward they pressed, and a moment later coming around a turn in the
+cavern where some earth had fallen away, evidently recently, Tom could
+not repress a cry of joy. For there, in plain sight, were many large
+lumps of the valuable metal, in as pure a state as it is ever found.
+For it is always mixed with other metals or chemicals.
+</P>
+
+<P>
+"Look at that!" cried Tom. "Look at that! Lumps as large as an egg!"
+and he dug some out with a small pick he had brought along, and stuffed
+them into his pocket.
+</P>
+
+<P>
+"Bless my check book!" cried Mr. Damon, "and that stuff is as valuable
+as gold!"
+</P>
+
+<P>
+"More so!" cried Tom enthusiastically.
+</P>
+
+<P>
+"Oh, here's a whopping big one!" cried Ned. "I'll bet it weighs ten
+pounds."
+</P>
+
+<P>
+"More than that!" cried Tom, as he ran over and began digging it out,
+and they found later that it did. Platinum is usually found in small
+granules, but there are records of chunks being found weighing twenty
+pounds while others, the size of pigeons' eggs, are not uncommon.
+</P>
+
+<P>
+"Say, this is great!" yelled Ned, discovering another large piece, and
+digging it out.
+</P>
+
+<P>
+"I am glad we could lead you to it," said the elder Russian brother.
+"It is a small return for what you did for us!"
+</P>
+
+<P>
+"Nonsense!" cried Tom. "These must be a king's ransom here. Everybody
+dig it out! Get all you can."
+</P>
+
+<P>
+They were all busy, but the light of the two torches Tom had brought
+was not sufficient for good and efficient work, so after getting
+several thousand dollars worth of the precious metal, they decided to
+postpone operations until morning, and come with more lights.
+</P>
+
+<P>
+They were at the work soon after breakfast, the night in the air glider
+having passed without incident. The treasure of platinum proved even
+richer than the Russians had thought, and it was no wonder the Imperial
+government had tried so hard to locate it, or get on the trail of those
+who sought it.
+</P>
+
+<P>
+"And it's all good stuff!" cried Tom eagerly. "Not like that low-grade
+gold of the underground city. I can make my own terms when I sell this."
+</P>
+
+<P>
+For three days our friends dug and dug in that platinum mine, so many
+years lost to man, and when they got ready to leave they had indeed a
+king's ransom with them. But it was to be equally divided. Tom insisted
+on this, as his Russian friends had been instrumental in finding it.
+Toward the end of the excavation large pieces were scarce, and it was
+evident that the mine was what is called a "lode."
+</P>
+
+<P>
+"Well, shall we go back now?" asked Tom one day, after the finish of
+their mining operations. The work was comparatively simple, as the
+platinum lumps had merely to be dug out of the sides of the cave. But
+the loneliness and dreariness of the place was telling on them all.
+</P>
+
+<P>
+"Can't we carry any more?" asked Ned.
+</P>
+
+<P>
+"We could, but it might not be safe. I don't want to take on too much
+weight, as my glider isn't as stable as the airship. But we have plenty
+of the metal.
+</P>
+
+<P>
+"Indeed we have," agreed Ivan Petrofsky. "Much of mine and my brother's
+will go toward helping relieve the sufferings of the Siberian exiles,"
+he added.
+</P>
+
+<P>
+"And mine, too," said Alexis Borious.
+</P>
+
+<P>
+They started back early the next morning in a more terrific gale than
+in any the glider had yet flown. But she proved herself a stanch craft,
+and soon they were at the place where they had left the airship. It was
+undisturbed.
+</P>
+
+<P>
+Four days were spent in taking apart the glider and packing it on board
+the Falcon. Then, with the platinum safely stored away Tom, with a last
+look at the desolate land that had been so kind to them, sent his craft
+on her homeward way.
+</P>
+
+<P>
+It was when they were near the city of Pirtchina, on the Obi river,
+that what might have proved a disastrous accident occurred. They were
+flying along high, and at great speed, for Tom wanted to make all the
+distance he could, to get out of Siberia the more quickly. They had had
+a fair passage so far, and were congratulating themselves that they
+would soon be in civilization again.
+</P>
+
+<P>
+Suddenly, Mr. Damon, who had been on the after deck, taking
+observations through a telescope, came running forward, crying out:
+</P>
+
+<P>
+"Tom! Tom! What is that water dripping from the back part of the
+airship?"
+</P>
+
+<P>
+"Water?" exclaimed Tom. "No water is dripping from there."
+</P>
+
+<P>
+"Come and look," advised Mr. Damon.
+</P>
+
+<P>
+The young inventor raced back with him. He saw a thin, white stream
+trickling down from the lower part of the craft. Tom sniffed the air
+suspiciously.
+</P>
+
+<P>
+"Gasolene! It's gasolene!" he cried. "We must have a leak in the supply
+tanks!"
+</P>
+
+<P>
+He dashed toward the reserve storeroom, and at that moment, with a
+suddenness that was startling, the motor stopped and the Falcon lurched
+toward the earth.
+</P>
+
+<BR><BR><BR>
+
+<A NAME="chap25"></A>
+<H3 ALIGN="center">
+CHAPTER XXV
+</H3>
+
+<H3 ALIGN="center">
+HOMEWARD BOUND&mdash;CONCLUSION
+</H3>
+
+<P>
+"All right!" yelled Ned, as soon as he heard Tom's cry. "I've got her
+under control. We'll volplane down."
+</P>
+
+<P>
+"Is it dangerous? Are we in danger?" asked Peter Petrofsky of his
+brother, in Russian.
+</P>
+
+<P>
+"I guess there's no danger, where Tom Swift's concerned," was the
+answer. "I have not volplaned much, but it will be all right I think."
+</P>
+
+<P>
+And it was, for with Ned Newton to guide the craft, while Tom did his
+best to stop the leak, the craft came gently to earth on the outskirts
+of a fairly large Siberian city. Almost instantly the Falcon was
+surrounded by a curious throng.
+</P>
+
+<P>
+"You had better keep inside," said Ivan Petrofsky to his brother and
+Mr. Borious. "Descriptions of you are probably out broadcast by now,
+but I am still sufficiently disguised, I think."
+</P>
+
+<P>
+"But what is to be done?" demanded the younger Russian brother. "If the
+gasolene is gone, how can we leave here?"
+</P>
+
+<P>
+"Trust Tom Swift for that," was the reply. "Keep out of sight now,
+there is a large crowd outside."
+</P>
+
+<P>
+Tom came from the tank room. There was a despondent look on his face.
+</P>
+
+<P>
+"It's all gone&mdash;every drop," he said. "That's what made the motor stop."
+</P>
+
+<P>
+"What's gone?" asked Mr. Damon.
+</P>
+
+<P>
+"The gasolene. We sprung a leak in the main tank, somehow, and it all
+flowed out while we were flying along."
+</P>
+
+<P>
+"Haven't you any more?"
+</P>
+
+<P>
+"Not a bit. I was drawing on the reserve tank, hoping to get to
+civilization before I needed more. But its too late now. We will have
+to&mdash;"
+</P>
+
+<P>
+"Bless my snow shoes!" cried Mr. Damon. "Don't say we'll have to stay
+here&mdash;in Siberia! Don't say that. My wife&mdash;"
+</P>
+
+<P>
+"No, we won't have to stay here if we can get a supply of kerosene,"
+interrupted Tom. "The motor will burn that. The only trouble is that we
+may be detained. The authorities probably know us by this time, and are
+on the watch."
+</P>
+
+<P>
+"Then get it before they know we are here," advised Ned.
+</P>
+
+<P>
+"I'll try," said Tom, and he at once conferred with the elder
+Petrofsky. The latter said he was sure kerosene could be had in town,
+and, rather than risk going in themselves, they hired a wagoner who
+agreed, for liberal pay, to go and return with a quantity. Until then
+there was nothing to do but wait.
+</P>
+
+<P>
+Meanwhile the crowd of curiosity seekers grew. They thronged around the
+airship, some of them meddling with various devices, until Tom had to
+order them away with gestures.
+</P>
+
+<P>
+One particularly inquisitive man insisted on pulling or twisting
+everything, until he happened to touch a couple of live wires, giving
+himself quite a shock, and then he ran away howling. But still the
+crowd increased, and at last Mr. Petrofsky said:
+</P>
+
+<P>
+"I don't like this, Tom?"
+</P>
+
+<P>
+"Why not?" They were all inside the craft, looking out and waiting for
+the return of the man with the kerosene. The leak in the tank had
+proved to be a small one, and had quickly been soldered. It had been
+open a long time, which accounted for the large amount of gasolene
+escaping. "What don't you like, Mr. Petrofsky?"
+</P>
+
+<P>
+"So many men surrounding us. I believe some of them are officers
+dressed in civilians' clothes, and a Russian officer never does that
+unless he has some object."
+</P>
+
+<P>
+"And you think the object is&mdash;?"
+</P>
+
+<P>
+"To capture us."
+</P>
+
+<P>
+"If it was that, wouldn't they have done it long ago&mdash;when we first
+came down?"
+</P>
+
+<P>
+"No, they are evidently waiting for something perhaps for some high
+official, without whose orders they dare do nothing. Russia is overrun
+with officialdom."
+</P>
+
+<P>
+And a little later Ivan Petrofsky's suspicion proved true. There
+arrived a man in uniform, who spoke fairly good English, and who
+politely asked Tom if he would not delay the start of the airship,
+again, until the governor could arrive from his country place to see it.
+</P>
+
+<P>
+"We know you are going to leave us," said the Russian with a smile,
+"for you have sent for kerosene. But please wait."
+</P>
+
+<P>
+"If your governor comes soon we'll wait," replied Tom. "But we are in a
+hurry. I wish that kerosene fellow would get a move on," he murmured.
+</P>
+
+<P>
+"Oh, he will doubtless be here soon," said the officer. "Might I be
+permitted to come aboard and wait for my chief?"
+</P>
+
+<P>
+"Sorry, but it's not allowed," replied our hero, straining his eyes
+down the road for a sight of the wagoner. At last he came, and Tom
+breathed easier.
+</P>
+
+<P>
+But the crowd was bigger, and some of the men, though poorly dressed,
+seemed to be persons in authority. Tom had no doubt but what there was
+a plot afoot to detain him, and arrest the exiles, and that there were
+disguised soldiers in the throng. But they could not act without the
+governor's orders, and he was probably on his way with all haste.
+</P>
+
+<P>
+"Lively now, get that kerosene in the tanks!" cried Tom to the man,
+motioning in lieu of using Russian. The youth was not going to meet the
+governor if he could help it.
+</P>
+
+<P>
+Now it was a curious thing, but the more that wagoner and his helpers
+seemed to try to hurry, and pour the oil from the cans into the
+tank-opening of the airship, the slower they worked. They got in each
+others' way, dropped some cans, spilled others, and in general made
+such poor work at it that Tom saw there was something in the wind.
+</P>
+
+<P>
+"Ned!" he exclaimed, "they're doing all they can to detain us. We've
+got to put that oil in ourselves. Just as we did the gasolene in
+France. It's the same sort of a delay game."
+</P>
+
+<P>
+"Right, Tom! I'm with you."
+</P>
+
+<P>
+"And I'll warn the crowd back, by telling them we are likely to blow up
+any minute!" added Ivan Petrofsky, which warning he shouted in Russian
+a moment later.
+</P>
+
+<P>
+Backward leaped the throng, as though a bomb bad been thrown into their
+midst, even the supposed officers joining in the retreat. The oil wagon
+was now easy of access, and Tom and Ned, with Mr. Damon to aid them,
+hastened toward it. Then the work of filling the tanks went on in
+something like good old, United States fashion.
+</P>
+
+<P>
+The last gallon of kerosene had been put aboard, and Tom and Ned with
+Mr. Damon, had climbed on deck, when the gaily uniformed officer, who
+had requested the delay, came riding up furiously.
+</P>
+
+<P>
+"Hold! Hold! If you please!" he cried. "The governor has come. He wants
+to see you."
+</P>
+
+<P>
+"Too late!" answered Tom. "Give him our best regards and ask him to
+come to the United States if he wants to see us. Sorry we haven't cards
+handy. Ned, take the pilot house, and shoot her up sharp when you get
+the signal. I'm going to run the motor. I don't know just how she'll
+behave on the kerosene."
+</P>
+
+<P>
+"You must remain!" angrily cried the officer.
+</P>
+
+<P>
+"The United States doesn't take 'must' from anybody, from the Czar
+down!" cried Tom as he disappeared into the motor room. The window was
+open, and the youth turned on the power the official cried again to him:
+</P>
+
+<P>
+"Halt! Here comes the governor! I declared you arrested by his orders,
+and in the name of the Czar!"
+</P>
+
+<P>
+"Nothing doing!" yelled Tom, and then, looking from the window, he saw
+approaching a troop of Cossacks, in the midst of whom rode a man in a
+brilliant uniform&mdash;evidently the governor.
+</P>
+
+<P>
+"Stop! Stop!" cried the official.
+</P>
+
+<P>
+"Here we go, Ned!" yelled Tom, and turning on more power the Falcon
+arose swiftly, before the very eyes of the angry governor, and his
+staff of Cossack soldiers.
+</P>
+
+<P>
+Up and up she went, faster and faster, the motors working well on the
+kerosene. Higher and higher. The governor and his soldiers were
+directly below her now.
+</P>
+
+<P>
+"Stop! Stop! You must stop. The Imperial governor orders it!" yelled
+the officer, evidently his Excellency's aide-de-camp.
+</P>
+
+<P>
+"We can't hear you!" shouted Tom, waving his hand from the motor room
+window, and then, turning on still more power he flew over the city,
+taking his friends and the valuable supply of platinum with him. So
+surprised were the soldiers that they did not fire a shot, but had they
+done so it is doubtful if much damage could have been done.
+</P>
+
+<P>
+"And now for home!" cried Tom, and homeward hound the Falcon was after
+a perilous trip through two storms. But she weathered them well.
+</P>
+
+<P>
+In due season they reached Paris again, and now, having no reason for
+concealment, they flew boldly down, to change what remained of the
+kerosene for gasolene, as the motor worked better on that. The secret
+police learned that the exiles were aboard, but they could do nothing,
+as the offenses were political ones, and so Tom kept his friends safe.
+</P>
+
+<P>
+Then they started on the long voyage across the Atlantic, and though
+they had one bad experience in a storm over that mighty ocean, they got
+safely home to Shopton in due season.
+</P>
+
+<P>
+There is little more to tell. The platinum proved to be even more
+valuable than Tom had expected. He could have sold it all for a large
+sum, but he preferred to keep most of what he had for his inventive
+work, and he used considerable of it in his machinery. Ned disposed of
+his, selling Tom some at a lower price than market quotations, and the
+Russians got a good price for theirs, turning the money into the fund
+to help their fellow exiles. Mr. Damon also made a good donation to the
+cause, as did Tom and Ned.
+</P>
+
+<P>
+Mr. Petrofsky and his brother, with the other exile, joined friends in
+New York, and promised to come and see Tom when they could.
+</P>
+
+<P>
+"Well, I suppose you'll take a long vacation now," said Mary Nestor, to
+Tom, when he called on her one evening to present her a unique ring,
+with the stones set in some of the platinum he had dug in the Siberian
+mine.
+</P>
+
+<P>
+"Vacation? I have no time for vacations!" said the young inventor. "I'm
+soon going to work on my silent airship, and on some other things I
+have in mind. I want more adventures."
+</P>
+
+<P>
+"Oh, you greedy boy!" exclaimed Mary with a laugh.
+</P>
+
+<P>
+And what adventures Tom had next will be found in the next book of this
+series, which will be entitled, "Tom Swift in Captivity; Or, a Daring
+Escape by Airship."
+</P>
+
+<P>
+Tom had several offers to give exhibitions in his air glider, from
+aviation committees at various meets, but he declined.
+</P>
+
+<P>
+"I haven't time," he declared. "I'm too busy."
+</P>
+
+<P>
+"You ought to rest," his chum Ned advised him.
+</P>
+
+<P>
+"'Bless my alarm clock!' as Mr. Damon would say," exclaimed Tom. "The
+best rest is new work," and then he began sketching his ideas for a
+silent motor craft, during which we will take leave of him for a while.
+</P>
+
+<BR><BR><BR><BR>
+
+
+
+
+
+
+
+
+<pre>
+
+
+
+
+
+End of Project Gutenberg's Tom Swift and his Air Glider, by Victor Appleton
+
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+++ b/952.txt
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+Project Gutenberg's Tom Swift and his Air Glider, by Victor Appleton
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+
+Title: Tom Swift and his Air Glider
+ or, Seeking the Platinum Treasure
+
+Author: Victor Appleton
+
+Posting Date: July 13, 2008 [EBook #952]
+Release Date: June, 1997
+Last updated: January 30, 2012
+Last updated: April 22, 2012
+
+Language: English
+
+Character set encoding: ASCII
+
+*** START OF THIS PROJECT GUTENBERG EBOOK TOM SWIFT AND HIS AIR GLIDER ***
+
+
+
+
+Produced by Anthony Matonac.
+
+
+
+
+
+
+
+
+TOM SWIFT AND HIS AIR GLIDER
+
+or
+
+Seeking the Platinum Treasure
+
+
+By
+
+VICTOR APPLETON
+
+
+
+CONTENTS
+
+ I A Breakdown
+ II A Daring Project
+ III The Hand of the Czar
+ IV The Search
+ V A Clew from Russia
+ VI Rescuing Mr. Petrofsky
+ VII The Air Glider
+ VIII In a Great Gale
+ IX The Spies
+ X Off in the Airship
+ XI A Storm at Sea
+ XII An Accident
+ XIII Seeking a Quarrel
+ XIV Hurried Flight
+ XV Pursued
+ XVI The Nihilists
+ XVII On to Siberia
+ XVIII In a Russian Prison
+ XIX Lost in a Salt Mine
+ XX The Escape
+ XXI The Rescue
+ XXII In the Hurricane
+ XXIII The Lost Mine
+ XXIV The Leaking Tanks
+ XXV Homeward Bound--Conclusion
+
+
+
+
+
+TOM SWIFT AND HIS AIR GLIDER
+
+
+
+
+CHAPTER I
+
+A BREAKDOWN
+
+
+"Well, Ned, are you ready?"
+
+"Oh, I suppose so, Tom. As ready as I ever shall be."
+
+"Why, Ned Newton, you're not getting afraid; are you? And after you've
+been on so many trips with me?"
+
+"No, it isn't exactly that, Tom. I'd go in a minute if you didn't have
+this new fangled thing on your airship. But how do you know how it's
+going to work--or whether it will work at all? We may come a cropper."
+
+"Bless my insurance policy!" exclaimed a man who was standing near the
+two lads who were conversing. "You'd better keep near the ground, Tom."
+
+"Oh, that's all right, Mr. Damon," answered Tom Swift. "There isn't any
+more danger than there ever was, but I guess Ned is nervous since our
+trip to the underground city of gold."
+
+"I am not!" indignantly exclaimed the other lad, with a look at the
+young inventor. "But you know yourself, Tom, that putting this new
+propeller on your airship, changing the wing tips, and re-gearing the
+motor has made an altogether different sort of a craft of it. You,
+yourself, said it wasn't as reliable as before, even though it does go
+faster."
+
+"Now look here, Ned!" burst out Tom. "That was last week that I said it
+wasn't reliable. It is now, for I've tried it out several times, and
+yet, when I ask you to take a trip with me, to act as ballast--"
+
+"Is that all you want me for, Tom, to act as ballast? Then you'd better
+take a bag of sand--or Mr. Damon here!"
+
+"Me? I guess not! Bless my diamond ring! My wife hasn't forgiven me for
+going off on that last trip with you, Tom, and I'm not going to take
+any more right away. But I don't blame Ned--"
+
+"Say, look here!" cried Tom, a little out of patience, "you know me
+better than that, Ned. Of course you're more than ballast--I want you to
+help me manage the craft since I made the changes on her. Now if you
+don't want to come, why say so, and I'll get Eradicate. I don't believe
+he'll be afraid, even if he--"
+
+"Hold on dar now, Massa Tom!" exclaimed an aged colored man, who was an
+all around helper at the Swift homestead, "was yo' referencin' t' me
+when yo' spoke?"
+
+"Yes, Rad, I was saying that if Ned wouldn't go up in the airship with
+me you would."
+
+"Well, now, Masa Tom, I shorely would laik t' 'blige yo', I shore
+would. But de fack ob de mattah am dat I has a mos' particular job ob
+white washin' t' do dish mornin', an' I 'spects I'd better be gittin'
+at it. It's a mos' particular job, an', only fo' dat, I'd be mos'
+pleased t' go up in de airship. But as it am, I mus' ax yo' t' 'scuse
+me, I really mus'," and the colored man shuffled off at a faster gait
+than he was in the habit of using.
+
+"Well, of all things!" gasped Tom. "I believe you're all afraid of the
+old airship, just because I made some changes in her. I'll go up alone,
+that's what I will."
+
+"No, I'll go with you," interposed Ned Newton who was Tom's most
+particular chum. "I only wanted to be sure it was all right, that was
+all."
+
+"Well, if you've fully made up your mind," went on the young inventor,
+a little mollified, "lend me a hand to get her in shape for a run. I
+expect to make faster time than I ever did before, and I'm going to
+head out Waterford way. You'd better come along, Mr. Damon, and I'll
+drop you off at your house."
+
+"Bless my feather bed!" gasped the man. "Drop me off! I like that, Tom
+Swift!"
+
+"Oh, I didn't mean it exactly that way," laughed Tom. "But will you
+come."
+
+"No, thanks, I'm going home by trolley," and then as the odd man went
+in the house to speak to Tom's father, the two lads busied themselves
+about the airship.
+
+This was a large aeroplane, one of the largest Tom Swift had ever
+constructed, and he was a lad who had invented many kinds of machinery
+besides crafts for navigating the upper regions. It was not as large as
+his combined aeroplane and dirigible balloon of which I have told you
+in other books, but it was of sufficient size to carry three persons
+besides other weight.
+
+Tom had built it some years before, and it had seemed good enough then.
+Later he constructed some of different models, besides the big
+combination affair, and he had gone on several trips in that.
+
+He and his chum Ned, together with Eradicate Sampson, the colored man,
+and Mr. Damon, had been to a wonderful underground city of gold in
+Mexico, and it was soon after their return from this perilous trip that
+Tom had begun the work of changing his old aeroplane into a speedier
+craft.
+
+This had occupied him most of the Winter, and now that Spring had come
+he had a chance to try what a re-built motor, changed propellers, and
+different wing tips would do for the machine.
+
+The time had come for the test and, as we have seen, Tom had some
+difficulty in persuading anyone to go along with him! But Ned finally
+got over his feeling of nervousness.
+
+"Understand, Tom," spoke Ned, "it isn't because I don't think you know
+how to work an aeroplane that I hesitated. I've been up in the air with
+you enough times to know that you're there with the goods, but I don't
+believe even you know what this machine is going to do."
+
+"I can pretty nearly tell. I'm sure my theory is right."
+
+"I don't doubt that. But will it work out in practice?"
+
+"She may not make all the speed I hope she will, and I may not be able
+to push her high into the air quicker than I used to before I made the
+changes," admitted Tom, "but I'm sure of one thing. She'll fly, and she
+won't come down until I'm ready to let her. So you needn't worry about
+getting hurt."
+
+"All right--if you say so. Now what do you want me to do, Tom?"
+
+"Go over the wire guys and stays for the first thing. There's going to
+be lots of vibration, with the re-built motor, and I want everything
+tight."
+
+"Aye, aye, sir!" answered Ned with a laugh.
+
+Then he set at his task, tightening the small nuts, and screwing up the
+turn-buckles, while Tom busied himself over the motor. There was some
+small trouble with the carburetor that needed eliminating before it
+would feed properly.
+
+"How about the tires?" asked Ned, when he had finished the wires.
+
+"You might pump them up. There, the motor is all right. I'm going to
+try it now, while you attend to the tires."
+
+Ned had pumped up one of the rubber circlets of the small bicycle
+wheels on which the aeroplane rested, and was beginning on the second,
+when a noise like a battery of machine guns going off next to his ear
+startled him so that he jumped, tripped over a stone and went down, the
+air pump thumping him in the back.
+
+"What in the world happened, Tom?" he yelled, for he had to use all his
+lung power to be heard above that racket. "Did it explode?"
+
+"Explode nothing!" shouted Tom. "That's the re-built motor in action."
+
+"In action! I should say it was in action. Is it always going to roar
+like that?"
+
+Indeed the motor was roaring away, spitting fire and burnt gases from
+the exhaust pipe, and enveloping the aeroplane in a whitish haze of
+choking smoke.
+
+No, I have the muffler cut out, and that's why she barks so. But she
+runs easier that way, and I want to get her smoothed out a bit.
+
+"Whew! That smoke!" gasped his chum. "Why don't you--whew--this is more
+than I can stand," and holding his hands to his smarting eyes, Ned,
+gasping and choking, staggered away to where the air was better.
+
+"It is sort of thick," admitted Tom. "But that's only because she's
+getting too much oil. She'll clear in a few minutes. Stick around and
+we'll go up."
+
+Despite the choking vapor, the young inventor stuck to his task of
+regulating the motor, and in a short while the smoke became less, while
+the big propeller blades whirled about more evenly. Then Tom adjusted
+the muffler, and most of the noise stopped.
+
+"Come on back, and finish pumping up the tires," he shouted to Ned.
+"I'm going to stop her now, and then I'll give her the pressure test,
+and we'll take a trip."
+
+Having cleared his eyes of smoke, Ned came back to his task, and this
+having been finished, Tom attached a heavy spring balance, or scales,
+to the rope that held the airship back from moving when her propellers
+were whirling about.
+
+"How much pressure do you want?" asked Ned.
+
+"I ought to get above twelve hundred with the way the motor is geared,
+but I'll go up with ten. Watch the needle for me."
+
+It may be explained that when aeroplanes are tested on the earth the
+propellers are set in motion. This of course would send a craft
+whizzing over the ground, eventually to rise in the air, but for the
+fact that a rope, attached to the craft, and to some stationary object,
+holds it back.
+
+Now if this rope is hooked to a spring balance, which in turn is made
+fast to the stationary object, the "thrust" of the propellers will be
+registered in pounds on the scale of the balance. Anywhere from five
+hundred to nine hundred pounds of thrust will take a monoplane or
+biplane up. But Tom wanted more than this.
+
+Once more the motor coughed and spluttered, and the big blades whirled
+about so fast that they seemed like solid pieces of wood. Tom stood on
+the ground near the levers which controlled the speed, and Ned watched
+the scale.
+
+"How much?" yelled the young inventor.
+
+"Eight hundred."
+
+Tom turned on a little more gasolene.
+
+"How much?" he cried again.
+
+"Ten hundred. That'll do!"
+
+"No, I'm going to try for more."
+
+Again he advanced the spark and gasolene levers, and the comparatively
+frail craft vibrated so that it seemed as if she would fly apart.
+
+"Now?" yelled Tom.
+
+"Eleven hundred and fifty!" cried Ned.
+
+"Good! That'll do it. She'll give more after she's been running a
+while. We'll go up."
+
+Ned scrambled to his seat, and Tom followed. He had an arrangement so
+that he could slip loose the retaining rope from his perch whenever he
+was ready.
+
+Waiting until the motor had run another minute, the young inventor
+pulled the rope that released them. Over the smooth starting ground
+that formed a part of the Swift homestead darted the aeroplane. Faster
+and faster she moved, Ned gripping the sides of his seat.
+
+"Here we go!" cried Tom, and the next instant they shot up into the air.
+
+Ned Newton had ridden many times with his chum Tom, and the sensation
+of gliding through the upper regions was not new to him. But this time
+there was something different. The propellers seemed to take hold of
+the air with a firmer grip. There was more power, and certainly the
+speed was terrific.
+
+"We're going fast!" yelled Ned into Tom's ear.
+
+"That's right," agreed the young inventor. "She'll beat anything but my
+Sky Racer, and she'd do that if she was the same size." Tom referred to
+a very small aeroplane he had made some time before. It was like some
+big bird, and very swift.
+
+Up and onward went the remodeled airship, faster and faster, until,
+when several miles had been covered, Ned realized that the young
+inventor had achieved another triumph.
+
+"It's great, Tom! Great!" he yelled.
+
+"Yes, I guess it will do, Ned. I'm satisfied. If there was an
+international meet now I'd capture some of the prizes. As it is--"
+
+Tom stopped suddenly. His voice which had been raised to overcome the
+noise of even the muffled motor, sounded unnaturally loud, and no
+wonder, for the engine had ceased working!
+
+"What's the matter?" gasped Ned.
+
+"I don't know--a breakdown of some kind."
+
+"Can you get it going again?"
+
+"I'm going to try."
+
+Tom was manipulating various levers, but with no effect. The aeroplane
+was shooting downward with frightful rapidity.
+
+"No use!" exclaimed the young inventor. "Something has broken."
+
+"But we're falling, Tom!"
+
+"I know it. We've done it before. I'm going to volplane to earth."
+
+This, it may be explained, is gliding downward from a height with the
+engine shut off. Aeroplanists often do it, and Tom was no novice at the
+art.
+
+They shot downward with less speed now, for the young inventor had
+thrown up his headplanes to act as a sort of brake. Then, a little
+later they made a good landing in a field near a small house, in a
+rather lonely stretch of country, about ten miles from Shopton, where
+Tom lived.
+
+"Now to see what the trouble is," remarked our hero, as he climbed out
+of his seat and began looking over the engine. He poked in among the
+numerous cogs, wheels and levers, and finally uttered an exclamation.
+
+"Find it?" asked Ned.
+
+"Yes, it's in the magneto. All the platinum bearings and contact
+surfaces have fused and crystallized. I never saw such poor platinum as
+I've been getting lately, and I pay the highest prices for it, too. The
+trouble is that the supply of platinum is giving out, and they'll have
+to find a substitute I guess."
+
+"Can't we go home in her?" asked Ned.
+
+"I'm afraid not. I've got to put in new platinum bearings and contacts
+before she'll spark. I only wish I could get hold of some of the better
+kind of metal."
+
+The magneto of an aeroplane performs a service similar to one in an
+automobile. It provides the spark that explodes the charge of gas in
+the cylinders, and platinum is a metal, more valuable now than gold,
+much used in the delicate parts of the magneto.
+
+"Well, I guess it's walk for ours," said Ned ruefully.
+
+"I'm afraid so," went on Tom. "If I only had some platinum, I could--"
+
+"Perhaps I could be of service to you," suddenly spoke a voice behind
+them, and turning, the youths saw a tall, bearded man, who had
+evidently come from the lonely house. "Did I hear you say you needed
+some platinum?" he asked. He spoke with a foreign accent, and Tom at
+once put him down for a Russian.
+
+"Yes, I need some for my magneto," began the young inventor.
+
+"If you will kindly step up to my house, perhaps I can give you what
+you want," went on the man. "My name is Ivan Petrofsky, and I have only
+lately come to live here."
+
+"I'm Tom Swift, of Shopton, and this is my chum, Ned Newton," replied
+the young inventor, completing the introductions. He was wondering why
+the man, who seemed a cultured gentleman, should live in such a lonely
+place, and he was wondering too how he happened to have some platinum.
+
+"Will that answer?" asked Mr. Petrofsky, when they had reached his
+house, and he had handed Tom several strips of the precious silverlike
+metal.
+
+"Do? I should say it would! My, but that is the best platinum I've seen
+in a long while!" exclaimed Tom, who was an expert judge of this metal.
+"Where did you get it, if I may ask?"
+
+"It came from a lost mine in Siberia," was the unexpected answer.
+
+"A lost mine?" gasped Tom.
+
+"In Siberia?" added Ned.
+
+Mr. Petrofsky slowly nodded his head, and smiled, but rather sadly.
+
+"A lost mine," he said slowly, "and if it could be found I would be the
+happiest man on earth for I would then be able to locate and save my
+brother, who is one of the Czar's exiles," and he seemed shaken by
+emotion.
+
+Tom and Ned stood looking at the bearded man, and then the young
+inventor glanced at the platinum strips in his hand while a strange and
+daring thought came to him.
+
+
+
+
+CHAPTER II
+
+A DARING PROJECT
+
+
+While Tom and his chum are in the house of the Russian, who so
+strangely produced the platinum just when it was most needed, I am
+going to take just a little time to tell you something about the hero
+of this story. Those who have read the previous books of this series
+need no introduction to him, but in justice to my new readers I must
+make a little explanation.
+
+Tom Swift was an inventor, as was his father before him. But Mr. Swift
+was getting too old, now, to do much, though he had a pet
+invention--that of a gyroscope--on which he worked from time to time.
+Tom lived with his father in the village of Shopton, in New York state.
+His mother was dead, but a housekeeper, named Mrs. Baggert, looked
+after the wants of the inventors, young and old.
+
+The first book of the series was called "Tom Swift and His
+Motor-Cycle," and in that I related how Tom bought the machine from a
+Mr. Wakefield Damon, of Waterford, after the odd gentleman had
+unintentionally started to climb a tree with it. That disgusted Mr.
+Damon with motor-cycling, and Tom had lots of fun on the machine, and
+not a few daring adventures.
+
+He and Mr. Damon became firm friends, and the oddity of the
+gentleman--mainly that of blessing everything he could think of--was no
+objection in Tom's mind. The young inventor and Ned Newton went on many
+trips together, Mr. Damon being one of the party.
+
+In Shopton lived Andy Foger, a bullying sort of a chap, who acted very
+meanly toward Tom at times. Another resident of the town was a Mr.
+Nestor, but Tom was more interested in his daughter Mary than in the
+head of the household. Add Eradicate Sampson, an eccentric colored man
+who said he got his name because he "eradicated" dirt, and his mule,
+Boomerang, and I think you have met the principal characters of these
+stories.
+
+After Tom had much enjoyment out of his motor-cycle, he got a motor
+boat, and one of his rivals on Lake Carlopa was this same Andy Foger,
+but our hero vanquished him. Then Tom built an airship, which had been
+the height of his ambition for some years. He had a stirring cruise in
+the Red Cloud, and then, deserting the air for the water, Tom and his
+father built a submarine, in which they went after sunken treasure. In
+the book, "Tom Swift and His Electric Runabout," I told how, in the
+speediest car on the road, Tom saved his father's bank from ruin, and
+in the book dealing with Tom's wireless message I related how he saved
+the Castaways of Earthquake Island.
+
+When Tom went among the diamond makers, at the request of Mr. Barco
+Jenks, and discovered the secret of phantom mountain the lad fancied
+that might be the end of his adventures, but there were more to follow.
+Going to the caves of ice, his airship was wrecked, but he and his
+friends managed to get back home, and then it was that the young
+inventor perfected his sky racer, in which he made the quickest flight
+on record.
+
+Most startling were his adventures in elephant land whither he went
+with his electric rifle, and he was the means of saving a missionary,
+Mr. Illingway and his wife, from the red pygmies.
+
+Tom had not been home from Africa long before he got a letter from this
+missionary, telling about an underground city in Mexico that was said
+to be filled with gold. Tom went there, and in the book, entitled, "Tom
+Swift in the City of Gold," I related his adventures.
+
+How he and his friends were followed by the Fogers, how they eluded
+them, made their way to the ruined temple in a small dirigible balloon,
+descended to the secret tunnel, managed to turn aside the underground
+river, and reach the city of gold with its wonderful gold statues--all
+this is told in the volume.
+
+Then, after pulling down, in the centre of the underground city, the
+big golden statue, the door of rock descended, and made our friends
+prisoners. They almost died, but Andy Foger and his father, in league
+with some rascally Mexicans and a tribe of head-hunters, finally made
+their way to the tunnel, and most unexpectedly, released Tom and his
+friends.
+
+There was a fight, but our hero's party escaped with considerable gold
+and safely reached Shopton. Now, after a winter spent in work, fixing
+over an old aeroplane, we again meet Tom.
+
+"Would you mind telling me something about where this platinum comes
+from, and if you can get any more of it?" asked Tom, after a pause,
+following the strange statement made by the Russian.
+
+"I will gladly tell you the story," spoke Mr. Petrofsky, "for I am much
+interested in inventions, and I formerly did something in that line
+myself, and I have even made a small aeroplane, so you see I know the
+need of platinum in a high power magneto."
+
+"But where did you get such pure metal?" asked Tom. "I have never seen
+it's equal."
+
+"There is none like it in all the world," went on the Russian, "and
+perhaps there never can be any more. I have only a small supply. But in
+Siberia--in the lost mine--there is a large quantity of it, as pure as
+this, needing only a little refining.
+
+"Can't we get some from there?" asked the young inventor eagerly. "I
+should think the Russian government would mine it, and export it."
+
+"They would--if they could find it," said Ivan Petrofsky dryly, "but
+they can't--no one can find it--and I have tried very hard--so hard, in
+fact, that it is the reason for my coming to this country--that and the
+desire to find and aid my brother, who is a Siberian exile."
+
+"This is getting interesting," remarked Ned to Tom in a low voice, and
+the young inventor nodded.
+
+"My brother Peter, who is younger than I by a few years, and I, are the
+last of our family," began Mr. Petrofsky, motioning Tom and Ned to take
+chairs. "We lived in St. Petersburg, and early in life, though we were
+of the nobility, we took up the cause of the common people."
+
+"Nihilists?" asked Ned eagerly, for he had read something of these
+desperate men.
+
+"No, and not anarchists," said Mr. Petrofsky with a sad smile. "Our
+party was opposed to violence, and we depended on education to aid our
+cause. Then, too, we did all we could in a quiet way to help the poor.
+My brother and I invented several life-saving and labor-saving machines
+and in this way we incurred the enmity of the rich contractors and
+government officials, who made more money the more people they could
+have working for them, for they made the people buy their food and
+supplies from them.
+
+"But my brother, and I persisted, with the result that we were both
+arrested, and, with a number of others were sent to Siberia.
+
+"Of the horrors we endured there I will say nothing. However, you have
+probably read much. In the country near which we were quartered there
+were many mines, some of salt and some of sulphur. Oh, the horrors of
+those mines! Many a poor exile has been lost in the windings of a salt
+mine, there to die miserably. And in the sulphur mines many die also,
+not from being lost so much as being overcome by stifling gases. It is
+terrible! And sometimes they are purposely abandoned by their guides,
+for the government wants to get rid of certain exiles.
+
+"But you are interested in platinum. One day my brother and I who had
+been sent to work in the salt mines, mistook a turning and wandered on
+and on for several miles, finally losing our way. We had food and water
+with us, or we would have perished, and, as it was, we nearly died
+before we finally found our way out of an abandoned opening.
+
+"We came out in the midst of a terrible snowstorm, and wandered about
+almost frozen. At last we were found by a serf who, in his sled, took
+us to his poor cottage. There we were warmed and fed back to life.
+
+"We knew we would be searched for, as naturally, our absence would lead
+to the suspicion that we had tried to escape. So as soon as we were
+able, we started back to the town where we were quartered. The serf
+wanted to take us in his sled, but we knew he might be suspected of
+having tried to aid us to get away, and he might be arrested. So we
+went alone.
+
+"As might have been expected, we became lost again, and wandered about
+for several days. But we had enough food to keep us alive. And it was
+during this wandering that I came upon the platinum mine. It was down
+in a valley, in the midst of a country densely wooded and very
+desolate. There was an outcropping of the ore, and rather idly I put
+some of it in my pockets. Then we wandered on, and finally after awful
+suffering in terrific storms, were found by a searching party and
+brought back to the barracks."
+
+"Did they think you had escaped?" asked Tom.
+
+"They did," replied the Russian, "and they punished us severely for it,
+in spite of our denials. In time I managed secretly to smelt the
+platinum ore, and I found I had some of the purest metal I had ever
+seen. I was wishing I could find the mine, or tell some of my friends
+about it, when one of the officers discovered the metal in my bed.
+
+"He demanded to know where I had gotten it, and knowing that refusal
+would only make it the worse for me I told him. There was considerable
+excitement, for the value of the discovery was recognized, and a search
+was at once made for the mine.
+
+"But, even with the aid we were able to give, it could not be located.
+Many expeditions went out to hunt for it but came back baffled. They
+could not penetrate that wild country."
+
+"They should have used an aeroplane," suggested Tom.
+
+"They did," replied the Russian quickly, "but it was of no use."
+
+"Why not?" the young inventor wanted to know.
+
+"Because of the terrific winds that almost continually sweep over that
+part of Siberia. They never seem to cease, and there are treacherous
+air currents and 'pockets' that engulfed more than one luckless
+aviator. Oh, you may be sure the Russian government spared no means of
+finding the lost platinum mine, but they could not locate it, or even
+get near the place where they supposed it to be.
+
+"Then, perhaps thinking that my brother and I were concealing
+something, they separated us. Where they sent him I do not know, but I
+was doomed to the sulphur mines. I was heartbroken, and I scarcely
+cared whether I lived or died. But an opportunity of escape came, and I
+took it. I wanted to save my brother, but I did not know where he was,
+and I thought if I could make my way to some civilized country, or to
+free America, I might later be able to save my brother.
+
+"I went to England, taking some of my precious platinum with me, and
+stayed there for two years. I learned your language, but my efforts to
+organize an expedition to search for the lost mine, and for my brother,
+failed. Then I came here, and--well, I am still trying."
+
+"My! That is certainly interesting!" exclaimed Ned, who had been all
+attention during the telling of the story.
+
+"And you certainly had a hard time," declared Tom. "I am much obliged
+for this platinum. Have you set a price on it? It is worth much more
+than the ordinary kind."
+
+"The price is nothing to you," replied the Russian, with a smile. "I am
+only too glad to help you fix your aeroplane. Will it take long? I
+should like to watch you."
+
+"Come along," invited Tom. "I can soon have it going again, and I'll
+give you a ride, if you like."
+
+"No, thank you, I'm hardly up to that yet, though I may be some day.
+The machine I made never flew well and I had several bad falls."
+
+Tom and Ned worked rapidly on the magneto, and soon had replaced the
+defective bits of platinum.
+
+"If the Russians had such a machine as this maybe they could have
+gotten to that mine," suggested Ned, who was very proud of Tom's craft.
+
+"It would be useless in the terrific winds, I fear," answered Ivan
+Petrofsky. "But now I care little for the mine. It is my brother whom I
+want to save. He must be in some of the Siberian mines, and if I had
+such a craft as this I might be able to rescue him."
+
+Tom Swift dropped the file he was using. A bright light sparkled in his
+eyes. He seemed strangely excited.
+
+"Mr. Petrofsky!" he cried, "would you let me have a try at finding your
+brother, and would you come with me?"
+
+"Would I?" asked the Russian eagerly. "I would be your debtor for life,
+and I would always pray for you, if you could help me to save my
+brother Peter."
+
+"Then we'll have a try at it!" cried Tom. "I've got a different airship
+than this--one in which I can travel three thousand miles without
+coming down. I haven't had any excitement since I got back from the
+city of gold. I'm going to Russia to help you rescue your brother from
+exile, and I'm also going to have a try for that lost platinum
+treasure!"
+
+"Thank heaven, there is some hope for poor Peter at last," murmured Mr.
+Petrofsky earnestly.
+
+"You never can get to the platinum mine," said Ned. "The winds will
+tear your airship to pieces."
+
+"Not the kind I'm going to make," declared Tom. "It's going to be an
+air glider, that will fairly live on high winds. Ho! for Siberia and
+the platinum mines. Will you come?"
+
+"I don't know what you mean by an air glider, Tom Swift, but I'll go to
+help rescue my brother," was the quick answer, and then, with the light
+of a daring resolve shining in his eyes, the young inventor proceeded
+to get his aeroplane in shape for the trip back to Shopton.
+
+
+
+
+CHAPTER III
+
+THE HAND OF THE CZAR
+
+
+"Then you won't take a ride with me to-day?" asked the young inventor,
+of the Russian, as he completed the repairs to the magneto. "I'd like
+to have you meet my father, and a friend of his, Mr. Damon. Most likely
+he'll go to Siberia with us, if his wife will let him. I'd like to talk
+some plans over with you."
+
+"I shall certainly call on you," answered Ivan Petrofsky, "but," he
+added with a smile, "I think I should prefer to take my first ride in
+your larger airship--the one that doesn't come down so often."
+
+"Well, perhaps it is a little easier on an amateur," admitted Tom. "If
+you'll come over to our house at any time I'll take you out in it, or
+I'll call for you."
+
+"I'll come over in a few days," answered the escaped exile. "Then I'll
+tell you all I know of the locality where the platinum mine is located,
+and we can make our plans. In the meanwhile don't say anything about
+what I have told you."
+
+"Why?" asked Ned quickly.
+
+Mr. Petrofsky approached closer to the lads, and in a low voice said:
+
+"I am not sure about it, but of late I think I have been shadowed. I
+have seen strange men in the village near here and they have eyed me
+rather suspiciously. Then, too, I have surprised several men around my
+house. I live here all alone, you know, and do most of my own work, a
+woman coming in occasionally to clean. But I don't like these
+suspicious characters hanging about.
+
+"Who do you think they are?" asked Tom.
+
+"I'm almost afraid to think, but from my past experience I think--nay,
+I fear--they may be spies, or agents of the Russian government."
+
+"Spies!" cried Ned.
+
+"Hush. Not so loud," cautioned Mr. Petrofsky. "They may even now be in
+hiding, especially since your aeroplane landed so near my house. They
+may see something suspicious even in that."
+
+"But why should the Russian government set spies on you?" asked Tom in
+a low voice.
+
+"For two reasons. I am an escaped exile, and I am not a citizen of the
+United States. Therefore I may be sent back to the sulphur mines. And
+another reason is that they may think I know the secret of the platinum
+treasure--the lost mine."
+
+"Say this is getting interesting!" exclaimed Tom. "If we are going to
+have a brush with some of the spies of the Russian government so much
+the better. I'm ready for 'em!"
+
+"So am I!" added Ned.
+
+"You don't know them," said Mr. Petrofsky, and he could not repress a
+shudder. "I hope they are not on my trail, but if they are--" he paused
+a moment, straightened himself up, and looked like what he was, a
+strong man--"if they are let them look out. I'd give my life to save my
+brother from the awful, living death to which he is consigned!"
+
+"And we're with you!" cried Tom, offering the Russian his hand. "We'll
+turn the trick yet. Now don't forget to come and see us. Come along,
+Ned. If I'm going to build an air glider I've got to get busy." And
+waving farewells to their new friend, the lads took their places in the
+aeroplane and were soon on their way to Shopton.
+
+"Well, what do you think of it?" asked Ned of his chum, as they sped
+along at a good elevation, the engine going at half speed to be less
+noisy and make talking easier.
+
+"Lots. I think we're in for a good time, an exciting one, anyhow, if
+what he says is true. But what in the world is an air glider, Tom?"
+
+"It's the last word in aeroplanes. You don't need a motor to make it
+go."
+
+"Don't need a motor?"
+
+"No, the wind does it all. It's a sort of aeroplane, but the motion
+comes from the wind, acting on different planes, and this is
+accomplished by shifting weights. In it you can stand still in a fierce
+gale, if you like."
+
+"How, by tying her fast on the ground?"
+
+"No, hovering in the air. It's all done by getting the proper balance.
+The harder the wind blows the better the air glider works, and that's
+why I think it will be just the thing for Siberia. I'm going to get
+right at work on it, and you'll help me; won't you?"
+
+"I sure will. Say, is platinum worth much?"
+
+"Worth much? I should say it was! It's got gold beat now, and the
+available supply is very small, and it's getting more scarce. Russia
+has several mines, and the metal is of good quality. I've used some
+Russian platinum, but the kind Mr. Petrofsky gave me to-day was better
+than the best I ever had. If we can only find that lost mine we'll be
+millionaires all right."
+
+"That's what we thought when we found the city of gold, but the gold
+wasn't of as fine a grade as we hoped."
+
+"Well, nothing like that can happen in this platinum deal. It sure is
+rich ore that Mr. Petrofsky and his brother found. Poor fellow! To
+think of being an exile in that awful country, not knowing where you
+may be sent next. No wonder Mr. Petrofsky wants to rescue him."
+
+"That's right. Well, here we are. I wonder what your father will say
+when he hears you're thinking of another expedition, Tom?"
+
+"Oh, he'll want me to go when he hears about the exile."
+
+"And I'm sure my folks will let me go. How about Mr. Damon?"
+
+"I don't believe we can hold him back. It will make a nice party, just
+you and I, and Mr. Damon and Mr. Petrofsky. That will leave room for
+the other Russian--if we can rescue him," and with that Tom shut off
+the engine and glided to earth.
+
+It may well be imagined that Mr. Swift was surprised when his son told
+him the latest news, but he did not offer any serious objection to the
+young inventor going to Siberia.
+
+"Only you must be careful," he said. "Those Russian officers are ugly
+when it comes to trying to take away any of their prisoners. And this
+air glider--I don't exactly know about that. It's a new machine, and
+you want to be sure it works before you trust yourself to it."
+
+"I will," promised Tom. "Say, I've got plenty of work ahead of me,--to
+get my big airship in shape, and build the glider. You'll have to help
+me, dad."
+
+"I will, son. Now tell me more about this Mr. Petrofsky." Which Tom did.
+
+The days that followed were indeed busy ones for Tom. The young
+inventor made a model air glider that sailed fairly well, but he knew
+it would have to work better to be successful, and he bent all his
+energies in that direction. Meanwhile Mr. Damon had been told of the
+prospective trip.
+
+"Bless my bank book! Of course I'll go," he said. "But don't say
+anything about it to my wife--that is, just yet. I'll bring her around
+to it gradually. She has always wanted a diamond ring set in platinum,
+and now I can get it for her. I know she'll let me go if I break it to
+her gently."
+
+It may be mentioned here that many valuable diamonds are now set in
+platinum instead of gold.
+
+"I want to keep busy," said Mr. Damon, so Tom set him, Ned and
+Eradicate at the task of getting the big airship in shape for the trip.
+This air craft has not figured in any of my previous stories, but as it
+is so nearly like the one that was crushed in the caves of ice, I will
+not give a description of it here. Those who care to may refer to the
+book telling of Tom's trip to the caves of ice for a detailed account
+of the craft.
+
+Sufficient to say that this latest airship, named the Falcon, was the
+largest Tom had ever built. It contained much room, many comforts, and
+could sail for several thousand miles without descending, except in
+case of accident. It was a combined dirigible balloon and aeroplane,
+and could be used as either, the necessary gas being made on board. It
+was large enough to enable the air glider to be taken on it in sections.
+
+It was about a week after their first meeting with him, that Ivan
+Petrofsky paid a visit to the Swift home. He was warmly welcomed by the
+aged inventor and Mr. Damon, and, closeted in the library of the house,
+he proceeded to go more into details of his own and his brother's exile
+to Siberia, and to tell about the supposed location of the lost
+platinum mine.
+
+"I don't believe we can start for several weeks yet," said Tom, after
+some discussion. "It will take me that long to make the glider."
+
+"And I, too, need a little time," said the Russian. "I will write to
+some friends in St. Petersburg and perhaps they can get some
+information for us, as to where my brother is.
+
+"That will be good," declared Mr. Damon. "Bless my icicle! But the more
+I think of this trip the better I like it!"
+
+It was arranged that the Russian should call again soon, when the plans
+would be nearer in shape, and in the meanwhile he must learn all he
+could from revolutionary friends in Siberia.
+
+It was a week after this, during which Tom, Ned and the others had been
+very busy, that Tom decided to take a trip to see their Russian friend.
+They had not heard from him since his visit, and Tom wanted to learn
+something about the strength of the Siberian winds.
+
+He and Ned went in one of the small airships and soon they were
+hovering over the grounds surrounding the lonely house where Ivan
+Petrofsky lived.
+
+"He doesn't seem to be at home," remarked Ned, as they descended and
+approached the dwelling.
+
+"No, and it looks quite deserted," agreed the young inventor. "Say, all
+the doors are open, too! He shouldn't go away and leave his house open
+like that--with the valuable platinum there."
+
+"Maybe he's asleep," suggested Ned.
+
+They knocked on the opened door, but there was no answer. Then they
+went inside. To their surprise the house was in confusion. Furniture
+was overturned, tables and chairs were broken, and papers were
+scattered about the room.
+
+"There's been a fight here!" cried Tom.
+
+"That's right," agreed Ned. "Maybe he's been hurt--maybe burglars came
+for the platinum!"
+
+"Come on!" cried Tom, making a dash for the stairs. "We'll see if he's
+here."
+
+The house was small, and it took but a moment to show that Mr.
+Petrofsky was not there. Upstairs, as below, was the same
+confusion--the overturned furniture and the papers scattered about.
+
+Tom stooped and picked up a scrap that looked like a piece torn from a
+letter. On top was a seal--the black seal of Russia--the imperial arms
+of the Czar!
+
+"Look!" cried Tom, holding out the paper.
+
+"What is it?" asked Ned.
+
+"The hand of the Czar!" answered his chum. "It has reached out from
+Russia, and taken Mr. Petrofsky away!"
+
+
+
+
+CHAPTER IV
+
+THE SEARCH
+
+
+For a moment Ned could scarcely understand what Tom meant. It scarcely
+seemed possible that such a thing could happen. That some one in
+far-off Russia--be it the Czar or one of the secret police--could
+operate from such a distance, seeking out a man in an obscure house in
+a little American village, and snatching him away.
+
+"It isn't possible!" declared Ned breathlessly.
+
+"What difference does that make?" asked Tom. "The thing has happened,
+and you can't get out of it. Look at all the evidence--there's been a
+fight, that's sure, and Mr. Petrofsky is gone."
+
+"But maybe he went away of his own accord," insisted Ned, who was
+sometimes hard to convince.
+
+"Nonsense! If a man went away of his own accord would he smash up his
+furniture, leave his papers scattered all about and go off leaving the
+doors and windows open for any one to walk in? I guess not."
+
+"Well, maybe you're right. But think of it! This isn't Russia!"
+
+"No, but he's a Russian subject, and, by his own confession an escaped
+exile. If he was arrested in the usual way he could be taken back, and
+our government couldn't interfere. He's been taken back all right. Poor
+man! Think of being doomed to those sulphur mines again, and as he
+escaped they'll probably make it all the harder for him!"
+
+"But I thought our government wouldn't help other nations to get back
+prisoners convicted of political crimes," suggested Ned. "That's all
+Mr. Petrofsky was guilty of--politics, trying to help the poor in his
+own country. It's a shame if our government stands for anything like
+that!"
+
+"That's just the point!" exclaimed Tom. "Probably the spies, secret
+police, or whoever the Russian agents were, didn't ask any help from
+our government. If they did there might be a chance for him. But likely
+they worked in secret. They came here, sneaked in on him, and took him
+away before he could get help. Jove! If he could only have gotten word
+to me I'd have come in the airship, and then there'd be a different
+ending to this."
+
+"I guess you're right, Tom. Well, that ends it I suppose."
+
+"Ends what?"
+
+"Our trip to the platinum mine."
+
+"Not a bit of it. I'm going to have a hunt for it."
+
+"But how can you when Mr. Petrofsky can't go along to show us the way?
+Besides, we wanted to help rescue his brother, and now we can't."
+
+"Well, I'm going to make a big try," declared the young inventor
+firmly. "And the first thing I'm going to do is to get our friend out
+of the clutches of the Russian police."
+
+"You are? How?"
+
+"I'm going to make a search for him. Look here, Ned, he must have been
+taken away some time to-day--perhaps only a few hours ago--and they
+can't have gone far with him."
+
+"How do you make that out?" Ned wanted to know.
+
+"Well, I guess I'm detective enough for that," and Tom smiled. "Look
+here, the doors and windows are open. Now it rained last night, and
+there was quite a wind. If the windows had been open in the storm
+there'd be some traces of moisture in the rooms. But there isn't a
+drop. Consequently the windows have been opened since last night."
+
+"Say, that's so!" cried Ned admiringly.
+
+"But that's not all," went on Tom. "Here's a bottle of milk on the
+table, and it's fresh," which he proved by tasting it. "Now that was
+left by the milkman either late last night or early this morning. I
+don't believe it's over twelve hours old."
+
+"Well, what does this mean?" asked Ned, who couldn't quite follow Tom's
+line of reasoning.
+
+"To my mind it means that the spies were here no later than this
+morning. Look at the table upset, the dishes on the floor. Here's one
+with oatmeal in it, and you know how hard and firm cooked oatmeal gets
+after it stands a bit. This is quite fresh, and soft, and--"
+
+"And that means--" interrupted Ned, who was in turn interrupted by Tom,
+who exclaimed:
+
+"It means that Mr. Petrofsky was at breakfast when they burst in on
+him, and took him away. They had hard work overpowering him, I'll
+wager, for he could put up a pretty good fight. And the broken
+furniture is evidence of that. Then the spies, after tying him up, or
+putting him in a carriage, searched the house for incriminating papers.
+That's as plain as the nose on your face. Then the police agents, or
+whoever they were, skipped out in a hurry, not taking the trouble to
+close the windows and doors."
+
+"I believe it did happen that way," agreed Ned, who clearly saw what
+Tom meant. "But what can we do? How can we find him?"
+
+"By getting on the trail," answered his chum quickly. "There may be
+more clews in the house, and I'm sure there'll be some out of doors,
+for they must have left footprints or the marks of carriage wheels.
+We'll take a look, and then we'll get right on the search. I'm not
+going to let them take Mr. Petrofsky to Russia if I can help it. I want
+to get after that platinum, and he's the only one who can pilot us
+anywhere near the place; and besides, there's his brother we've got to
+rescue. We'll make a search for the exile."
+
+"I'm with you!" cried Ned. "Jove! Wouldn't it be great if we could
+rescue him? They can't have gotten very far with him."
+
+"I'm afraid they have quite a start on us," admitted Tom with a dubious
+shake of his head, "but as long as they're in the United States we have
+a chance. If ever they get him on Russian soil it's all up with him."
+
+"Come on then!" cried Ned. "Let's get busy. What's the first thing to
+do?"
+
+"Look for clews," replied Tom. "We'll begin at the top of the house and
+work down. It's lucky we came when we did, for every minute counts."
+
+Then the two plucky lads began their search for the kidnapped Russian
+exile. Had those who took him away seen the mere youths who thus
+devoted themselves to the task, they might have laughed in contempt,
+but those who know Tom Swift and his sturdy chum, know that two more
+resourceful and brave lads would be hard to find.
+
+
+
+
+CHAPTER V
+
+A CLEW FROM RUSSIA
+
+
+"Nothing much up here," remarked Tom, when he and Ned had gone all over
+the second floor twice. "That scrap of paper, which put me on to the
+fact that some one from the Russian government had been here, is about
+all. They must have taken all the documents Mr. Petrofsky had."
+
+"Maybe he didn't have any," suggested Ned.
+
+"If he was wise he'd get rid of them when he knew he was being
+shadowed, as he told us. Perhaps that was why they broke up the
+furniture, searching for hidden papers, or they may have done it out of
+spite because they didn't find anything. But we might as well go
+downstairs and look there."
+
+But the first floor was equally unproductive of clews, save those
+already noted, which showed, at least so Tom believed, that Mr.
+Petrofsky had been surprised and overpowered while at breakfast.
+
+"Now for outside!" cried the young inventor. "We'll see if we can
+figure out how they got him away."
+
+There were plenty of marks in the soft ground and turf, which was still
+damp from the night's rain, though it was now afternoon. Unfortunately,
+however, in approaching the house after leaving the aeroplane, Ned and
+Tom had not thought to exercise caution, and, not suspecting anything
+wrong, they had stepped on a number of footprints left by the
+kidnappers.
+
+But for all that, they saw enough to convince them that several men had
+been at the lonely house, for there were many marks of shoes. It was
+out of the question, however, to tell which were those of Mr. Petrofsky
+and which those of his captors.
+
+"They might have carried him out to a carriage they had in waiting,"
+suggested Ned. "Let's go out to the front gate and look in the road.
+They hardly would bring the carriage up to the door."
+
+"Good idea," commented Tom, and they hurried to the main thoroughfare
+that passed the Russian's house.
+
+"Here they are!" cried Ned, who was in the lead. "There's been a
+carriage here as sure as you're a foot high and it's a rubber-tired one
+too."
+
+"GOOD!" cried Tom admiringly. "You're coming right along in your
+detective training. How do you make that out?"
+
+"See here, where a piece of rubber has been broken or cut out of the
+tire. It makes a peculiar mark in the dirt every time the wheel goes
+around."
+
+"That's right, and it will be a good thing to trace the carriage by.
+Come on, we'll keep right after it."
+
+"Hold on a bit," suggested Ned, who, though not so quick as Tom Swift,
+frequently produced good results by his very slowness. "Are you going
+off and leave the airship here for some one to walk off with?"
+
+"Guess they wouldn't take it far," replied the young inventor, "but I'd
+better make it safe. I'll disconnect it so they can't start it, though
+if Andy Foger happens to come along he might slash the planes just out
+of spite. But I guess he won't show up."
+
+Tom took a connecting pin out of the electrical apparatus, making it
+impossible to start the aeroplane, and then, wheeling it out of sight
+behind a small barn, he and Ned went back to the carriage marks in the
+road.
+
+"Hurry!" urged Tom, as he started off in the direction of the village
+of Hurdtown, near where the cottage stood. "We will ask people living
+along the highway if they've seen a carriage pass."
+
+"But what makes you think they went off that way?" asked Ned. "I should
+think they'd head away from the village, so as not to be seen."
+
+"No, I don't agree with you. But wait, we'll look at the marks. Maybe
+that will help us."
+
+Peering carefully at the marks of horses' hoofs and the wheel
+impressions, Tom uttered a cry of discovery.
+
+"I have it!" he declared. "The carriage came from the village, and kept
+right on the other way. You're right, Ned. They didn't go back to town.
+
+"Are you sure?"
+
+"Of course. You can see for yourself; if the carriage had turned around
+the track would show, but it doesn't and, even if they turned on the
+grass, there'd be two lines of marks--one coming out here and one
+returning. As it is there is only a single set--just as if the carriage
+drove up here, took on its load, and continued on. This way, Ned."
+
+They hurried down the road, and soon came to a cluster of farm houses.
+Inquiries there, however, failed to bring anything to light, for either
+the occupants of the house had failed to notice passing vehicles, or
+there had been so many that any particular carriage was not recalled.
+And there were now so many impressions in the soft dirt of the
+highway--so many wheel tracks and hoof imprints--that it was impossible
+to pick out those of the carriage with the cut rubber tire. "Well, I
+guess it isn't of much use to go on any farther," spoke Ned, when they
+had traveled several miles and had learned nothing.
+
+"We'll try one more house, and then go back," agreed Tom. "We'll tell
+dad about what's happened, and see what he says."
+
+"Carriage?" repeated an old farmer to whom they next put the question.
+"Wa'al, now, come t' think of it, I did see one drivin' along here
+early this morning. It had rubber tires on too, for I recollect
+remarkin' t' myself that it didn't make much noise. Had t' talk t'
+myself," he added in explanation, "'cause nobody else in the family was
+up, 'ceptin' th' dog."
+
+"Did the carriage have some Russians in it?" asked Tom eagerly, "and
+was one a big bearded man?"
+
+"Wa'al, now you've got me," admitted the farmer frankly. "It was quite
+early you see, and I didn't take no particular notice. I got up early
+t' do my milkin' 'cause I have t' take it t' th' cheese factory. That's
+th' reason nobody was up but me. But I see this carriage comin' down
+th' road, and thinks I t' myself it was pretty middlin' early fer
+anybody t' be takin' a pleasure ride. I 'lowed it were a pleasure ride,
+'cause it were one of them hacks that folks don't usually use 'ceptin'
+fer a weddin', or a funeral, an' it wa'n't no funeral."
+
+"Then you can't tell us anything more except that it passed?" asked Ned.
+
+"No, I couldn't see inside, 'cause it was rather dark at that hour, and
+then, too, I noticed that they had th' window shades down."
+
+"That's suspicious!" exclaimed Tom. "I believe they are the fellows we're
+after," and, without giving any particulars he said that they were
+looking for a friend who might have been taken away against his will.
+
+"Could you tell where they were going?" asked Tom, scarcely hoping to
+get an affirmative answer.
+
+"Wa'al, th' man on th' seat pulled up when he see me," spoke the farmer
+with exasperating slowness, "an' asked me how far it was t' th'
+Waterville station, an' I told him."
+
+"Why didn't you say so at first?" asked Tom quickly. "Why didn't you
+tell us they were heading for the railroad?"
+
+"You didn't ask me," replied the farmer. "What difference does it make."
+
+"Every minute counts!" exclaimed the young inventor. "We want to keep
+right after those fellows. Maybe the agent can tell us where they
+bought tickets to, and we can trace them that way.
+
+"Shouldn't wonder," commented the farmer. "There ain't many trains out
+from Waterville at that time of day, an' mighty few passengers.
+Shouldn't wonder but Jake Applesauer could put ye on th' trail."
+
+"Much obliged," called Tom. "Come on, Ned," and he started back in the
+direction of the house where the kidnapping had taken place.
+
+"That ain't th' way t' 'vaterville!" the farmer shouted after them.
+
+"I know it, we're going to get our airship," answered Tom, and then he
+heard the farmer mutter.
+
+"Plumb crazy! That's what they be! Plumb crazy! Going after their
+airship! Shouldn't wonder but they was escaped lunatics, and the other
+fellers was keepers after 'em. Hu! Wa'al, I've got my work to do.
+'Tain't none of my affair."
+
+"Let him think what he likes," commented Ned as he and his chum hurried
+on. "We're on the trail all right."
+
+If Jake Applesauer, the agent at the Waterville station, was surprised
+at seeing two youths drop down out of an aeroplane, and begin
+questioning him about some suspicious strangers that had taken the
+morning train, he did not show it. Jake prided himself on not being
+surprised at anything, except once when he took a counterfeit dollar in
+return for a ticket, and had to make it good to the company.
+
+But, to the despair of Tom and Ned, he could not help them much. He had
+seen the party, of course. They had driven up in the hack, and one of
+the men seemed to be sick, or hurt, for his head was done up in
+bandages, and the others had to half carry him on the train.
+
+"That was Mr. Petrofsky all right," declared Ned.
+
+"Sure," assented Tom. "They must have hurt and drugged him. But you
+can't tell us for what station they bought tickets, Mr. Applesauer?"
+
+"No, for they didn't buy any. They must have had 'em, or else they paid
+on the train. One man drove off in the coach, and that's all I know."
+
+As Tom and Ned started back to Shopton in the aeroplane they discussed
+what could be done next. A hard task lay before them, and they realized
+that.
+
+"They could have gotten off at any station between here and New York,
+or even changed to another railroad at the junction," spoke Tom. "It's
+going to be a hard job."
+
+"Guess we'll have to get some regular detectives on it," suggested Ned.
+
+"And that's what I'll do," declared the young inventor. "They may be
+able to locate Mr. Petrofsky before those spies take him out of this
+country. If they don't--it will be too late. I'm going to talk to dad
+about it, and if he agrees I'll hire the best private detectives."
+
+Mr. Swift gave his consent when Tom had told the story, and, a day
+later, one of the best detectives of a well known agency called on Tom
+in Shopton and assumed charge of the case.
+
+The early reports from the detective were quite reassuring. He got on
+the trail of the men who had taken Mr. Petrofsky away, and confirmed
+the suspicion that they were agents of the Russian police. He trailed
+them as far as New York, and there the clews came to an end.
+
+"Whether they are in the big city, which might easily be, or in some of
+the nearby towns, will take some time to learn," the detective wrote,
+and Tom wired back telling him to keep on searching.
+
+But, as several weeks went by, and no word came, even Tom began to give
+up hope, though he did not stop work on the air glider, which was
+nearing completion. And then, most unexpectedly a clew came--a clew
+from far-off Russia.
+
+Tom got a letter one day--a letter in a strange hand, the stamp and
+postmark showing that it had come from the land of the Czar.
+
+"What do you suppose it contains?" asked Ned, who was with his chum
+when the communication was received.
+
+"Haven't the least idea; but I'll soon find out."
+
+"Maybe it's from the Russian police, telling you to keep away from
+Siberia."
+
+"Maybe," answered Tom absently, for he was reading the missive. "I
+say!" he suddenly cried. "This is great! A clew at last, and from St.
+Petersburg! Listen to this, Ned!
+
+"This letter is from the head of one of the secret societies over
+there, a society that works against the government. It says that Mr.
+Petrofsky is being detained a prisoner in a lonely hut on the Atlantic
+sea coast, not far from New York--Sandy Hook the letter says--and here
+are the very directions how to get there!"
+
+"No!" cried Ned, in disbelief. "How in the world could anybody in
+Russia know that."
+
+"It tells here," said Tom. "It's all explained. As soon as the secret
+police got Mr. Petrofsky they communicated with the head officials in
+St. Petersburg. You know nearly everyone is a spy over there, and the
+letter says that Mr. Petrofsky's friends there soon heard the news, and
+even about the exact place where he is being held."
+
+"What are they holding him for?" asked Ned.
+
+"That's explained, too. It seems they can't legally take him back until
+certain papers are received from his former prison in Siberia, and
+those are now on the way. His friends write to me to hasten and rescue
+him."
+
+"But how did they ever get your address?"
+
+"That's easy, though you wouldn't think so. It seems, so the letter
+explains, that as soon as Mr. Petrofsky got acquainted with us he wrote
+to friends in St. Petersburg, giving my address, and telling them, in
+case anything ever happened to him, to notify us. You see he suspected
+that something might, after he found he was being shadowed that way.
+
+"And it all worked out. As soon as his friends heard that he was
+caught, and learned where he was being held, they wrote to me. Hurrah,
+Ned! A clew at last! Now to wire the detective--no, hold on, we'll go
+there and rescue him ourselves! We'll go in the airship, and pick up
+Detective Trivett in New York."
+
+"That's the stuff! I'm with you!"
+
+"Bless my suspender buttons! So am I, whatever it is!" cried Mr. Damon,
+entering the room at that moment.
+
+
+
+
+CHAPTER VI
+
+RESCUING MR. PETROFSKY
+
+
+"We ought to be somewhere near the place now, Tom."
+
+"I think we are, Ned. But you know I'm not going too close in this
+airship."
+
+"Bless my silk hat!" exclaimed Mr. Damon. "I hope we don't have to walk
+very far in such a deserted country as this, Tom Swift."
+
+"We'll have to walk a little way, Mr. Damon," replied the young
+inventor. "If I go too close to the hut they'll see the airship, and as
+those spies probably know that Mr. Petrofsky has been dealing with me,
+They'd smell a rat at once, and run away, taking him with them, and
+we'd have all our work to do over again."
+
+"That's right," agreed Detective Trivett, who was one of the four in
+the airship that was now hovering over the Atlantic coast, about ten
+miles below the summer resorts of which Asbury Park was one.
+
+It was only a few hours after Tom had received the letter from Russia
+informing him of the whereabouts of the kidnapped Russian, and he had
+acted at once.
+
+His father sanctioned the plan of going to the rescue in one of Tom's
+several airships and, Mr. Damon, having been on hand, at once agreed to
+go. Of course Ned went along, and they had picked up the private
+detective in New York, where he was vainly seeking a clew to the
+whereabouts of Mr. Petrofsky.
+
+Now the young inventor and his friends were hovering over the sandy
+stretch of coast that extends from Sandy Hook down the Atlantic
+seaboard. They were looking for a small fishing hamlet on the outskirts
+of which, so the Russian letter stated, was situated the lonely hut in
+which Mr. Petrofsky was held a prisoner.
+
+"Do you think you can pick it out from a distance, Tom?" asked Mr.
+Damon, as the airship floated slowly along. It was not the big one they
+intended taking on their trip to Siberia, but it was sufficiently large
+to accommodate the four and leave room for Mr. Petrofsky, should they
+succeed in rescuing him.
+
+"I think so," answered the young inventor.
+
+In the letter from Russia a comparatively accurate description of the
+prisoner's hut had been given, and also some details about his guards.
+For there is little goes on in political circles in the realm of the
+Czar that is not known either to the spies of the government or those
+of the opposition, and the latter had furnished Tom with reliable
+information.
+
+"That looks like the place," said Tom at length, when, after peering
+steadily through a powerful telescope, during which time Ned steered
+the ship, the young inventor "picked up" a fishing settlement. "There
+is the big fish house, spoken of in the letter," he went on, "and the
+Russians know a lot about fish. That house makes a good landmark. We'll
+go down now, before they have a chance to see us."
+
+The others thought this a good idea, and a little later the airship
+sank to the ground amid a lonely stretch of sand dunes, about two miles
+from the hamlet on the outskirts of which the prison hut was said to be
+located.
+
+"Now," said Tom, "we've got to decide on a plan of campaign. It won't
+do for all of us to go to the hut and make the rescue. Some one has got
+to stay with the airship, to be ready to start it off as soon as we
+come back with Mr. Petrofsky--if we do come.
+
+"Then there's no use in me staying here," spoke Detective Trivett. "I
+don't know enough even to turn on the gasolene."
+
+"No, it's got to be Ned or me," said the young inventor.
+
+"I'll stay," volunteered Ned quickly, for though he would very much
+have liked to be in at the rescue, he realized that his place was in
+the airship, as Mr. Damon was not sufficiently familiar with the
+machinery to operate it.
+
+Accordingly, after looking to everything to see that it was in working
+order, Tom led the advance. It was just getting dusk, and they figured
+on getting to the hut after dark.
+
+"Have everything ready for a quick start," Tom said to Ned, "for we may
+come back running."
+
+"I will," was the prompt answer, and then, getting their bearings, the
+little party set off.
+
+They had to travel over a stretch of sandy waste that ran along the
+beach. Back in shore were a few scattered cottages, and not yet opened
+for the summer, and on the ocean side was the pounding surf. The hut,
+as Tom recalled the directions, lay just beyond a group of stunted
+hemlock trees that set a little way back from the ocean, on a bluff
+overlooking the sea. It was not near any other building.
+
+Slowly, and avoiding going any nearer the other houses than they could
+help, the little party made its way. They had to depend on their own
+judgement now, for the minor details of the location of the hut could
+not be given in the letter from Russia. In fact the spies themselves,
+in writing to their head officers about the matter, had not described
+the location in detail.
+
+"That looks like it over there," said Tom at last, when they had gone
+about a mile and a half, and saw a lonely hut with a light burning in
+it.
+
+Cautiously they approached and, as they drew nearer, they saw that the
+light came through the window of a small hut.
+
+"Looks like the place," commented the detective.
+
+"We'll have a look," remarked Tom.
+
+He crept up so he could glance in the window, and no sooner had he
+peered in, than he motioned for the others to approach.
+
+Looking under a partly-drawn curtain, Mr. Damon and Mr. Trivett saw the
+Russian whom they sought. He was seated at a table, his head bowed on
+his hands, and in the room were three men. A rifle stood in one corner,
+near one of the guards.
+
+"They're taking no chances," whispered Mr. Damon. "What shall we do,
+Tom?"
+
+"It's three to three," replied the young inventor. "But if we can get
+him away without a fight, so much the better. I think I have it. I'll
+go up to the door, knock and make quite a racket, and demand admittance
+in the name of the Czar. That will startle them, and they may all three
+rush to answer. Mr. Damon, you and the detective will stay by the
+window. As soon as you see the men rush for the door, smash in the
+window with a piece of driftwood and call to Mr. Petrofsky to jump out
+that way. Then you can run with him toward the airship, and I'll
+follow. It may work."
+
+"I don't see why it wouldn't," declared the detective. "Go ahead, Tom.
+We're ready."
+
+Looking in once more, to make sure that the guards were not aware of
+the presence of the rescuing party, Tom went to the front door of the
+hut. It was a small building, evidently one used by fishermen.
+
+Tom knocked loudly on the portal, at the same time crying out in a
+voice that he strove to make as deep and menacing as possible:
+
+"Open! Open in the name of the Czar!"
+
+Looking through the window, ready to act on the instant, Mr. Damon and
+the detective saw the three guards spring to their feet. One remained
+near Mr. Petrofsky, who also leaped up.
+
+"Now!" called the detective to his companion. "Smash the window!"
+
+The next instant a big piece of driftwood crashed through the casement,
+just as the two men were hurrying to the front door to answer Tom's
+summons.
+
+"Mr. Petrofsky! This way!" yelled Mr. Damon, sticking his head in
+through the broken sash. "Come out! We've come to save you! Bless my
+putty blower, but this is great! Come on!"
+
+For a moment the exile stared at the head thrust through the broken
+window, and he listened to Tom's emphatic knocks and demands. Then with
+a cry of delight the Russian sprang for the open casement, while the
+guard that had remained near him made a leap to catch him, crying out:
+
+"Betrayed! Betrayed! It's the Nihilists! Look out, comrades!"
+
+
+
+
+CHAPTER VII
+
+THE AIR GLIDER
+
+
+Mr. Damon continued to hammer away at the window sash with the piece of
+driftwood. There were splinters of the frame and jagged pieces of glass
+sticking out, making it dangerous for the exile to slip through.
+
+"Come on! Come on!" the eccentric man continued to call. "Bless my
+safety valve! We'll save you! Come on!"
+
+Mr. Petrofsky was leaping across the room, just ahead of the one guard.
+The other two were at the open door now, through which Tom could be
+seen. Then the spies, realizing in an instant that they had been
+deceived, made a dash after their comrade, who had his hand on the
+tails of the exile's coat.
+
+"Break away! Break loose!" cried Mr. Damon, who, by this time had
+cleared the window so a person could get through. "Don't let them hold
+you!"
+
+"I don't intend to!" retorted Mr. Petrofsky, and he swerved suddenly,
+tearing his coat, from the grasp of the guard.
+
+In another instant the exile was at the casement, and was being helped
+through by Mr. Damon, and there was need of it, for the three guards
+were there now, doing their best to keep their prisoner.
+
+"Pull away! Pull away!" cried Mr. Damon.
+
+"We'll help you!" shouted Tom, who, now that his trick had worked, had
+sped around to the other side of the hut.
+
+"Don't be afraid, we're with you!" exclaimed the detective, who was
+with the young inventor.
+
+"Grab him! Keep him! Hold him!" fairly screamed the rearmost of the
+three guards. "It is a plot of the Nihilists to rescue him. Shoot him,
+comrades. He must not get away!"
+
+"Don't you try any of your shooting games, or I'll take a hand in it!"
+shouted the detective, and, at the same moment he drew his revolver and
+fired harmlessly in the air.
+
+"A bomb! A bomb!", yelled the guards in terror.
+
+"Not yet, but there may be!" murmured Tom. The firing of the shot
+produced a good effect, for the three men who were trying to detain
+Ivan Petrofsky at once fell back from the window and gave him just the
+chance needed. He scrambled through, with the aid of Mr. Damon, and
+before the guards could again spring at him, which they did when the
+echoes of the shot had died away. They had realized, too late, that it
+was not a bomb, and that there was no immediate danger for them.
+
+"Come on!" cried Tom. "Make for the airship! We've got to get the start
+of them!"
+
+Leading the way, he sprinted toward the road that led to the place
+where the airship awaited them. He was followed by Mr. Damon and the
+detective, who had Mr. Petrofsky between them.
+
+"Are you all right?" Tom called back to the exile. "Are you hurt? Can
+you run?"
+
+"I'm all right," was the reassuring answer. "Go ahead; But they'll be
+right after us."
+
+"Maybe they'll stop when they see this," remarked the detective
+significantly, and he held his revolver so that the rays of the
+newly-risen moon glinted on it.
+
+"Here they come!" cried Tom a moment later, as three figures, one after
+the other, came around the corner of the house. They had not taken the
+shorter route through the window, as had Mr. Petrofsky, and this gained
+a little time for our friends.
+
+"Stop! Hold on!" cried one of the guards in fairly good English. "That
+is our prisoner."
+
+"Not any more!" the young inventor yelled back. "He's ours now."
+
+"Look out! They're going to shoot!" cried Mr. Damon. "Bless my
+gunpowder! can't you stop them some way or other, Mr. Detective?"
+
+"The only way is by firing first," answered Mr. Trivett, "and I don't
+want to hurt them. Guess I'll fire in the air again."
+
+He did, and the guards halted. They seemed to be holding a
+consultation, as Tom learned by glancing hastily back, and he caught
+the glisten of some weapon. But if the three men had any notion of
+firing they gave it up, and once more came on running. Doubtless they
+had orders to get their prisoner back to Russia alive, and did not want
+to take any chances of hitting him.
+
+"Leg it!" cried Tom. "Leg it!"
+
+He was well ahead, and wanted the others to catch up to him, but none
+of the men was a good runner, and Mr. Petrofsky, by reason of being
+rather heavily built, was worse than the other two, so they had to
+accommodate their pace to his.
+
+"I wonder if we can make it," mused Tom, as he realized that the
+airship was a good distance off yet the guards, though quite a way in
+the rear now were coming on fast. "It's going to be a close race,"
+thought the young inventor. "I wish we'd brought the airship a little
+nearer."
+
+It was indeed a race now, for the guards, seeming to know that they
+would not be shot at, were coming on more confidently, and were rapidly
+lessening the distance that separated them from their recent prisoner.
+
+"We've got to go faster!" cried Tom.
+
+"Bless my shoe leather!" yelled Mr. Damon. "I can't go any faster."
+
+Still he did make the attempt, and so did the exile and the detective.
+Little was said now, for each of the parties was running a dogged race,
+and in silence. They had gone possibly half a mile, and the first
+advantage of Tom and his friends was rapidly being lost, when suddenly
+there sounded in the air above a curious throbbing noise.
+
+"Bless my gasolene! What's that?" cried Mr. Damon.
+
+"The airship! It's the airship!" yelled Tom, as he saw a great dark
+shape slowly approaching. "Ned is bringing her to meet us."
+
+"Good!" cried the detective. "We need it I'm about winded!"
+
+"This way, Ned! This way!" cried Tom, and, an instant later, they were
+in the midst of a brilliant glow, for Ned had turned the current into
+the great searchlight on the bow of the air craft, and the beams were
+focused on our friends. Ned could now see the refugees, and in a moment
+he sent the graceful craft down, bringing it to a halt on the ground
+near Tom.
+
+"In with you!" cried the lad. "She's all ready to start up again!"
+
+"Come on!" yelled Tom to the others. "We're all right now, if you
+hustle!"
+
+"Bless my pin cushion!" gasped Mr. Damon, making a final spurt.
+
+The three guards had halted in confusion on seeing the big, black bulk
+of the airship, and when they noted the gleaming of the searchlight
+they must have realized that their chances were gone. They made a rush,
+however, but it was too late. Over the side of the craft scrambled Tom,
+Mr. Damon, the detective and Ivan Petrofsky, and an instant later Ned
+had sent it aloft. The race was over, and the young inventor and his
+friends had won.
+
+"You're the stuff!" cried Tom to Ned, as he went with his chum to the
+pilot house to direct the progress of the airship. "It's lucky you came
+for us. We never could have made the distance. We left the ship too far
+off."
+
+"That's what I thought after you'd gone," replied his chum. "So I
+decided to come and meet you. I had to go slowly so as not to pass you
+in the darkness."
+
+They were speeding off now, and Ned, turning the beams of the great
+searchlight below them, picked up the three guards who were gazing
+helplessly aloft after their fast disappearing prisoner.
+
+"You're having your first ride in an airship, Mr. Petrofsky," remarked
+Tom, when they had gone on for some little distance. "How do you like
+it?"
+
+"I'm so excited I hardly know, but it's quite a sensation. But how in
+the world did you ever find me to rescue me?"
+
+Then they told the story of their search, and the unexpected clew from
+Russia. In turn the exile told how he had been attacked at the
+breakfast table one morning by the three spies--the very men who had
+been shadowing him--and taken away secretly, being drugged to prevent
+his calling for help. He had been kept a close prisoner in the lonely
+hut, and each day he had expected to be taken back to serve out his
+sentence in Siberia.
+
+"Another day would have been too late," he told Tom, when he had
+thanked the young inventor over and over again, "for the papers would
+have arrived, and the last obstacle to taking me back to Russia would
+have been removed. They dared not take me out of the United States
+without official documents, and they would have been forged ones, for
+they intended trumping up a criminal charge against me, the political
+one not being strong enough to allow them to extradite me."
+
+"Well I'm glad we got you," said Tom heartily. "We will soon be ready
+to start for Siberia."
+
+"In this kind of a craft?"
+
+"Yes, only much larger. You'll like it. I only hope my air glider
+works."
+
+By putting on speed, Tom was able to reach Shopton before midnight, and
+there was quite an informal celebration in the Swift homestead over the
+rescue of the exile. The detective, for whom there was no further need,
+was paid off, and Mr. Petrofsky was made a member of the household.
+
+"You'd better stay here until we are ready to start," Tom said, "and
+then we can keep an eye on you. We need you to show us as nearly as
+possible where the platinum field is."
+
+"All right," agreed the Russian with a laugh. "I'm sure I'll do all I
+can for you, and you are certainly treating me very nicely after what I
+suffered from my captors."
+
+Tom resumed work on his air glider the next day, and he had an
+additional helper, for Mr. Petrofsky proved to be a good mechanic.
+
+In brief, the air glider was like an aeroplane save that it had no
+motor. It was raised by a strong wind blowing against transverse
+planes, and once aloft was held there by the force of the air currents,
+just like a box kite is kept up. To make it progress either with or
+against the wind, there were horizontal and vertical rudders, and
+sliding weights, by which the equilibrium could be shifted so as to
+raise or lower it. While it could not exactly move directly against the
+wind it could progress in a direction contrary to which the gale was
+blowing, somewhat as a sailing ship "tacks."
+
+And, as has been explained, the harder the wind blew the better the air
+glider worked. In fact unless there was a strong gale it would not go
+up.
+
+"But it will be just what is needed out there in that part of Siberia,"
+declared the exile, "for there the wind is never quiet. Often it blows
+a regular hurricane."
+
+"That's what we want!" cried Tom. He had made several models of the air
+glider, changing them as he found out his errors, and at last he had
+hit on the right shape and size.
+
+Midway of the big glider, on which work was now well started, there was
+to be an enclosed car for the carrying of passengers, their food and
+supplies. Tom figured on carrying five or six.
+
+For several weeks the work on the air glider progressed rapidly, and it
+was nearing completion. Meanwhile nothing more had been heard or seen
+of the Russian spies.
+
+"Well," announced Tom one night, after a day's hard work, "we'll be
+ready for a trial now, just as soon as there comes a good wind."
+
+"Is it all finished?" asked Ned.
+
+"No, but enough for a trial spin. What I want is a big wind now."
+
+
+
+
+CHAPTER VIII
+
+IN A GREAT GALE
+
+
+There was a humming in the air. The telegraph wires that ran along on
+high poles past the house of Tom Swift sung a song like that of an
+Aeolian harp. The very house seemed to tremble.
+
+"Jove! This is a wind!" cried Tom as he awakened on a morning a few
+days after his air glider was nearly completed. "I never saw it so
+strong. This ought to be just what I want I must telephone to Mr.
+Damon and to Ned."
+
+He hustled into his clothes, pausing now and then to look out of his
+window and note the effects of the gale. It was a tremendous wind, as
+was evidenced by the limbs of several trees being broken off, while in
+some cases frail trees themselves had been snapped in twain.
+
+"Coffee ready, Mrs. Baggert?" asked our hero as he went downstairs. "I
+haven't got time to eat much though."
+
+In spite of his haste Tom ate a good breakfast and then, having
+telephoned to his two friends, and receiving their promises to come
+right over, our hero went out to make a few adjustments to his air
+glider, to get it in shape for the trial.
+
+He was a little worried lest the wind die out, but when he got outside
+he noted with satisfaction that the gale was stronger than at first. In
+fact it did considerable damage in Shopton, as Tom learned later.
+
+It certainly was a strong wind. An ordinary aeroplane never could have
+sailed in it, and Tom was doubtful of the ability of even his big
+airship to navigate in it. But he was not going to try that.
+
+"And maybe my air glider won't work," he remarked to himself as he was
+on his way to the shed where it had been constructed. "The models went
+up all right, but maybe the big one isn't proportioned right. However,
+I'll soon see."
+
+He was busy adjusting the balancing weights when Ned Newton came in.
+
+"Great Scott!" exclaimed the lad, as he labored to close the shed door,
+"this is a blow all right, Tom! Do you think it's safe to go up?"
+
+"I can't go up without a gale, Ned."
+
+"Well, I'd think twice about it myself."
+
+"Why, I counted on you going up with me."
+
+"Burr-r-r-r!" and Ned pretended to shiver. "I haven't an accident
+insurance policy you know."
+
+"You won't need it, Ned. If we get up at all we'll be all right. Catch
+hold there, and shift that rear weight a little forward on the rod. I
+expect Mr. Damon soon."
+
+The eccentric man came in a little later, just as Tom and Ned had
+finished adjusting the mechanism.
+
+"Bless my socks!" cried Mr. Damon. "Do you really mean to go up to-day,
+Tom?"
+
+"I sure do! Why, aren't you going with me?" and Tom winked at Ned.
+
+"Bless my--" began Mr. Damon, and then, evidently realizing that he was
+being tested he exclaimed: "Well, I will go, Tom! If the air glider is
+any good it ought to hold me. I will go up."
+
+"Now, Ned, how about you?" asked the young inventor.
+
+"Well, I guess it's up to me to come along, but I sure do wish it was
+over with," and Ned glanced out of the window to see if the gale was
+dying out. But the wind was as high as ever.
+
+It was hard work getting the air glider out of the shed, and in
+position on top of a hill, about a quarter of a mile away, for Tom
+intended "taking off" from the mound, as he could not get a running
+start without a motor. The wind, however, he hoped, would raise him and
+the strange craft.
+
+In order to get it over the ground without having it capsize, or
+elevate before they were ready for it, drag ropes, attached to bags of
+sand were used, and once these were attached the four found that they
+could not wheel the air glider along on its bicycle wheels.
+
+"We'll have to get Eradicate and his mule, I guess," said Tom, after a
+vain endeavor to make progress against the wind. "When it's up in the
+air it will be all right, but until then I'll need help to move it.
+Ned, call Rad, will you?"
+
+The colored man, with Boomerang, his faithful mule, was soon on hand.
+The animal was hitched to the glider, and pulled it toward the hill.
+
+"Now to see what happens," remarked Tom as he wheeled his latest
+invention around where the wind would take it as soon as the
+restraining ropes were cast off, for it was now held in place by
+several heavy cables fastened to stakes driven in the ground.
+
+Tom gave a last careful look to the weights, planes and rudders. He
+glanced at a small anemometer or wind gage, on the craft, and noted
+that it registered sixty miles an hour.
+
+"That ought to do," he remarked. "Now who's going up with me? Will you
+take a chance, Mr. Petrofsky?"
+
+"I'd rather not--at first."
+
+"Come on then, Ned and Mr. Damon. Mr. Petrofsky and Rad can cast off
+the ropes."
+
+The wind, if anything, was stronger than ever. It was a terrific gale,
+and just what was needed. But how would the air glider act? That was
+what Tom wanted very much to know.
+
+"Cast off!" he cried to the Russian and Eradicate, and they slipped the
+ropes.
+
+The next moment, with a rush and whizzing roar, the air glider shot
+aloft on the wings of the wind.
+
+
+
+
+CHAPTER IX
+
+THE SPIES
+
+
+"We're certainly going up!" yelled Ned, as he sat beside Tom in the
+cabin of the air glider.
+
+"That's right!" agreed the young inventor rather proudly, as he grasped
+two levers, one of which steered the craft, the other being used to
+shift the weights. "We're going up. I was pretty sure of that. The next
+thing is to see if it will remain stationary in the air, and answer the
+rudder."
+
+"Bless my top knot!" cried Mr. Damon. "You don't mean to tell me you
+can stand still in a gale of wind, Tom Swift."
+
+"That's exactly what I do mean. You can't do it in an aeroplane, for
+that depends on motion to keep itself up in the air. But the glider is
+different. That's one of its specialties, remaining still, and that's
+why it will be valuable if we ever get to Siberia. We can hover over a
+certain spot in a gale of wind, and search about below with telescopes
+for a sign of the lost platinum mine.
+
+"How high are you going up?" demanded Ned, for the air glider was still
+mounting upward on a slant. If you ever scaled a flat piece of tin, or
+a stone, you'll remember how it seems to slide up a hill of air, when
+it was thrown at the right angle. It was just this way with the air
+glider--it was mounting upward on a slant.
+
+"I'm going up a couple of hundred feet at least," answered Tom, "and
+higher if the gale-strata is there. I want to give it a good test while
+I'm at it."
+
+Ned looked down through a heavy plate of glass in the floor of the
+cabin, and could see Mr. Petrofsky and Eradicate looking up at them.
+
+"Bless my handkerchief!" cried Mr. Damon, when his attention had been
+called to this. "It's just like an airship."
+
+"Except that we haven't a bit of machinery on board," said Tom. "These
+weights do everything," and he shifted them forward on the sliding
+rods, with the effect that the air glider dipped down with a startling
+lurch.
+
+"We're falling!" cried Ned.
+
+"Not a bit of it," answered Tom. "I only showed you how it worked. By
+sliding the weights back we go up."
+
+He demonstrated this at once, sending his craft sliding up another hill
+of air, until it reached an elevation of four hundred feet, as
+evidenced by the barograph.
+
+"I guess this is high enough," remarked Tom after a bit. "Now to see if
+she'll stand still."
+
+Slowly he moved the weights along, by means of the compound levers,
+until the air glider was on an "even keel" so to speak. It was still
+moving forward, with the wind now, for Tom had warped his wing tips.
+
+"The thing to do," said the young inventor, "is to get it exactly
+parallel with the wind-strata, so that the gale will blow through the
+two sets of planes, just as the wind blows through a box kite. Only we
+have no string to hold us from moving. We have to depend on the
+equalization of friction on the surfaces of the wings. I wonder if I
+can do it."
+
+It was a delicate operation, and Tom had not had much experience in
+that sort of thing, for his other airships and aeroplanes worked on an
+entirely different principle. But he moved the weights along, inch by
+inch, and flexed the tips, planes and rudders until finally Ned, who
+was looking down through the floor window, cried out:
+
+"We're stationary!"
+
+"Good!" exclaimed Tom. "Then it's a success."
+
+"And we can go to Siberia?" added Mr. Damon.
+
+"Sure," assented the young inventor. "And if we have luck we'll rescue
+Mr. Petrofsky's brother, and get a lot of platinum that will be more
+valuable than gold."
+
+It would not be true to say that the air glider was absolutely
+stationary. There was a slight forward motion, due to the fact that it
+was not yet perfected, and also because Tom was not expert enough in
+handling it.
+
+The friction on the plane surfaces was not equalized, and the gale
+forced the craft along slightly. But, compared to the terrific power of
+the wind, the air glider was practically at a standstill, and this was
+remarkable when one considers the force of the hurricane that was
+blowing above, below and through it.
+
+For actually that was what the hurricane was doing. It was as if an
+immense box kite was suspended in the air, without a string to hold it
+from moving, and as though a cabin was placed amidships to hold human
+beings.
+
+"This sure is great!" cried Ned. "Have you got her in control, Tom?"
+
+"I think so. I'll try and see how she works."
+
+By shifting the weights, changing the balance, and warping the wings,
+the young inventor sent the craft higher up, made it dip down almost to
+the earth, and then swoop upward like some great bird. Then he turned
+it completely about and though he developed no great speed in this test
+made it progress quarteringly against the wind.
+
+"It's almost perfect," declared Tom. "A few touches and she'll be all
+right."
+
+"Is it all right?" asked Ivan Petrofsky anxiously, as the three left
+the cabin, and Eradicate hitched his mule to the glider to take it back
+to the shed.
+
+"I see where it can be improved," he said, as they made ready to
+descend. "I'll soon have it in shape."
+
+"Then we can go to Siberia?"
+
+"In less than a month. The big airship needs some repairs, and then
+we'll be off."
+
+The Russian said nothing, but he looked his thanks to Tom, and the
+manner in which he grasped the hand of our hero showed his deep
+feelings.
+
+The glider was given several more trials, and each time it worked
+better. Tom decided to change some of the weights, and he devoted all
+his time to this alteration, while Ned, Mr. Damon, and the others
+labored to get the big airship in shape for the long trip to the land
+of the exiles.
+
+So anxious was Tom to get started, that he put in several nights
+working on the glider. Ned occasionally came over to help him, while
+Mr. Damon was on hand as often as his wife would allow. Mr. Petrofsky
+spent his nights writing to friends in Russia, hoping to get some clew
+as to the whereabouts of his brother.
+
+It was on one of these nights, when Tom and Ned were laboring hard,
+with Eradicate to help them that an incident occurred which worried
+them all not a little. Tom was adjusting some of the new weights on the
+sliding rods, and called to Ned:
+
+"I say, old man, hand me that big monkey wrench, will you. I can't
+loosen this nut with the small one. You'll find it on the bench by that
+back window."
+
+As Ned went to get the tool he looked from the casement. He started,
+stood staring through the glass for a moment into the outer darkness,
+and then cried out:
+
+"Tom, we're being watched! There are some spies outside!"
+
+"What?" exclaimed the young inventor "Where are they? Who are they?"
+
+"I don't know. Those Russian police, maybe out front, and maybe we can
+catch them!"
+
+Grabbing up the big monkey wrench, Ned made a dash for the large
+sliding doors, followed by Tom who had an iron bar, and Eradicate with
+a small pair of pliers.
+
+"By golly!" cried the colored man, "ef I gits 'em I'll pinch dere noses
+off!"
+
+
+
+
+CHAPTER X
+
+OFF IN THE AIRSHIP
+
+
+Going from the brightly lighted shop into the darkness of the night,
+illuminated as it was only by the stars, neither Tom, Ned, nor
+Eradicate, could see anything at first. They had to stand still for a
+moment to accustom their eyes to the gloom.
+
+"Can you see them?" cried Tom to his chum.
+
+"No, but I can hear them! Over this way!" yelled Ned, and then, being
+able to dimly make out objects, so he would not run into them, he
+started off, followed by the young inventor.
+
+Tom could hear several persons running away now, but he could see no
+one, and from the sound he judged that the spies, if such they were,
+were hurrying across the fields that surrounded the shop.
+
+It was almost a hopeless task to pursue them, but the two lads were not
+the kind that give up. They rushed forward, hoping to be able to
+grapple with those who had looked in the shop window, but it was not to
+be.
+
+The sound of the retreating footsteps became more and more faint, until
+finally they gave no clew to follow.
+
+"Better stop," advised Tom. "No telling where we'll end up if we keep
+on running. Besides it might be dangerous."
+
+"Dangerous; how?" panted Ned.
+
+"They might dodge around, and wait for us behind some tree or bush."
+
+"An' ef dat Foger feller am around he jest as soon as not fetch one ob
+us a whack in de head," commented Eradicate grimly.
+
+"Guess you're about right," admitted Ned. "There isn't much use keeping
+on. We'll go back."
+
+"What sort of fellows were they?" asked Tom, when, after a little
+further search, the hunt was given up. "Could you see them well, Ned?"
+
+"Not very good. Just as I went to get you that wrench I noticed two
+faces looking in the window. I must have taken them by surprise, for
+they dodged down in an instant. Then I yelled, and they ran off."
+
+"Did you see Andy Foger?"
+
+"No, I didn't notice him."
+
+"Was either of them one of the spies who had Mr. Petrofsky in the hut?"
+
+"I didn't see those fellows very well, you remember, so I couldn't say."
+
+"That's so, but I'll bet that's who they were."
+
+"What do you think they're after, Tom?"
+
+"One of two things. They either want to get our Russian friend into
+their clutches again, or they're after me--to try to stop me from going
+to Siberia."
+
+"Do you think they'd go to such length as that?"
+
+"I'm almost sure they would. Those Russian police are wrong, of course,
+but they think Mr. Petrofsky is an Anarchist or something like that,
+and they think they're justified in doing anything to get him back to
+the Siberian mines. And once the Russian government sets out to do a
+thing it generally does it--I'll give 'em credit for that."
+
+"But how do you suppose they know you're going to Russia?"
+
+"Say, those fellows have ways of getting information you and I would
+never dream of. Why, didn't you read the other day how some fellow who
+was supposed to be one of the worst Anarchists ever, high up in making
+bombs, plotting, and all that sort of thing--turned out to be a police
+spy? They get their information that way. I shouldn't be surprised but
+what some of the very people whom Mr. Petrofsky thinks are his friends
+are spies, and they send word to headquarters of every move he makes."
+
+"Why don't you warn him?"
+
+"He knows it as well as I do. The trouble is you can't tell who the
+spies are until it's too late. I'm glad I'm not mixed up in that sort
+of thing. If I can get to Siberia, help Mr. Petrofsky rescue his
+brother, and get hold of some of that platinum I'll be satisfied. Then
+I won't go back to the land of the Czar, once I get away from there."
+
+"That's right. Well, let's go back and work on the glider."
+
+"And we'll have Eradicate patrolling about the shop to make sure we're
+not spied on again."
+
+"By golly! Ef I sees any oh 'em, I suah will pinch 'em!" cried the
+colored man, as he clicked the pliers.
+
+But there was no further disturbance that night, and, when Tom and Ned
+ceased work, they had made good progress toward finishing the air
+glider.
+
+The big airship was almost ready to be given a trial flight, with her
+motors tuned up to give more power, and as soon as the Russian exile
+had a little more definite information as to the possible whereabouts
+of his brother, they could start.
+
+In the days that followed Tom and his friends worked hard. The air
+glider was made as nearly perfect as any machine is, and in a fairly
+stiff gale, that blew up about a week later, Tom did some things in it
+that made his friends open their eyes. The young inventor had it under
+nearly as good control as he had his dirigible balloons or aeroplanes.
+
+The big airship, too, was made ready for the long voyage, extra large
+storage tanks for gasolene being built in, as it was doubtful if they
+could get a supply in Siberia without arranging for it in advance, and
+this they did not want to do. Besides there was the long ocean flight
+to provide for.
+
+"But if worst comes to worst I can burn kerosene in my motor," Tom
+explained, for he had perfected an attachment to this end. "You can get
+kerosene almost anywhere in Russia."
+
+At last word was received from Russia, from some Revolutionist friends
+of the exile, stating that his brother was supposed to be working in a
+certain sulphur mine north of the Iablonnoi mountains, and half way
+between that range and the city of Iakutsk.
+
+"But it might be a salt mine, just as well," said Mr. Petrofsky, when
+he told the boys the news. "Information about the poor exiles is hard
+to get."
+
+"Well, we'll take a chance!" cried Tom determinedly.
+
+The preparations went on, and by strict watchfulness none of the spies
+secured admission to the shop where the air glider was being finished.
+The big airship was gotten in shape for the voyage, and then, after a
+final trial of the glider, it was taken apart and put aboard the
+Falcon, ready for use on the gale-swept plains of Siberia.
+
+The last of the stores, provisions and supplies were put in the big car
+of the airship, a route had been carefully mapped out, and Tom, after
+saying good-bye to Mary Nestor, his father, the housekeeper, and
+Eradicate, took his place in the pilot house of the airship one
+pleasant morning at the beginning of Summer.
+
+"Don't you wish you were going, Rad?" the young inventor asked, for the
+colored man had decided to stay at home.
+
+"No indeedy, Massa Tom," was the answer. "Dat's a mighty cold country
+in Shebeara, an' I laik warm wedder."
+
+"Well, take care of yourself and Boomerang," answered Tom with a laugh.
+Then he pulled the lever that sent a supply of gas into the big bag,
+and the ship began to rise.
+
+"I guess we've given those spies the slip," remarked Ned, as they rose
+from the ground calling good-byes to the friends they left behind.
+
+"I hope so," agreed Tom, but could he have seen two men, of sinister
+looks, peering at the slowly-moving airship from the shelter of a glove
+of trees, not far off, he might have changed his opinion, and so would
+Ned.
+
+Then, as the airship gathered momentum, it fairly sprang into the air,
+and a moment later, the big propellers began revolving. They were off
+on their long voyage to find the lost platinum mine, and rescue the
+exile of Siberia.
+
+
+
+
+CHAPTER XI
+
+A STORM AT SEA
+
+
+Tom had the choice of two routes in making his voyage to far-off
+Siberia. He could have crossed the United States, sailed over the
+Pacific ocean, and approached the land of the Czar from the western
+coast above Manchuria. But he preferred to take the Atlantic route,
+crossing Europe, and so sailing over Russia proper to get to his
+destination. There were several reasons for this.
+
+The water voyage was somewhat shorter, and this was an important
+consideration when there was no telling when he might have an accident
+that would compel him to descend. On the Atlantic he knew there would
+be more ships to render assistance if it was needed, although he hoped
+he would not have to ask for it.
+
+"Then, too," he said to Ned, when they were discussing the matter, "we
+will have a chance to see some civilized countries if we cross Europe,
+and we may land near Paris."
+
+"Paris!" cried Ned. "What for?"
+
+"To renew our supply of gasolene, for one thing," replied the young
+inventor. "Not that we will be out when we arrive, but if we take on
+more there we may not have to get any in Russia. Besides, they have a
+very good quality in France, so all told, I think the route over Europe
+to be the best."
+
+Ned agreed with him, and so did Mr. Petrofsky. As for Mr. Damon, he was
+so busy getting his sleeping room in order, and blessing everything he
+could think of, that he did not have time to talk much. So the eastern
+route was decided on, and as the big airship, carrying our friends,
+their supplies, and the wonderful air glider rose higher and higher,
+Tom gradually brought her around so that the pointed nose of the gas
+bag aimed straight across the Atlantic.
+
+They were over the ocean on the second day out, for Tom did not push
+the craft to her limit of speed, now they had time to consider matters
+at their leisure, for they had been rather hurried on leaving.
+
+The machinery was working as nearly to perfection as it could be
+brought, and Tom, after finding out that his craft would answer equally
+well as a dirigible balloon or an aeroplane, let it sail along as the
+latter.
+
+"For," he said, "we have a long trip ahead of us and we need to save
+all the elevating gas we can save. If worst comes to worst, and we
+can't navigate as an aeroplane any more, we can even drift along as a
+dirigible. But while we have the gasolene we might as well make speed
+and be an aeroplane."
+
+The others agreed with him, and so it was arranged. Tom, when he had
+seen to it that his craft was working well, let Ned take charge and
+devoted himself to seeing that all the stores and supplies were in
+order for quick use.
+
+Of course, until they were nearer the land of the Czar, and that part
+of Siberia where Mr. Petrofsky's brother was held as an exile, they
+could do little save make themselves as comfortable as possible in the
+airship. And this was not hard to do.
+
+Naturally, in a craft that had to carry a heavy load, and lift itself
+into the air, as well as propel itself along, not many things could be
+taken. Every ounce counted. Still our friends were not without their
+comforts. There was a well stocked kitchen, and Mr. Damon insisted on
+installing himself as cook. This had been Eradicate's work but the
+eccentric man knew how to do almost everything from making soup to
+roasting a chicken, and he liked it. So he was allowed free run of the
+galley.
+
+Tom and Ned spent much time in the steering tower or engine room, for,
+though all of the machinery was automatic, there was need of almost
+constant attention, though there was an arrangement whereby in case of
+emergency, the airship would steer herself in any set direction for a
+certain number of hours.
+
+There were ample sleeping quarters for six persons, a living room and a
+dining saloon. In short the Falcon was much like Tom's Red Cloud, only
+bigger and better. There was even a phonograph on board so that music,
+songs, and recitations could be enjoyed.
+
+"Bless my napkin! but this is great!" exclaimed Mr. Damon, about noon
+of the second day, when they had just finished dinner and looked down
+through the glass windows in the bottom of the cabin at the rolling
+ocean below them. "I don't believe many persons have such opportunities
+as we have."
+
+"I'm sure they do not," added Mr. Petrofsky. "I can hardly think it
+true, that I am on my way back to Siberia to rescue my dear brother."
+
+"And such good weather as we're having," spoke Ned. "I'm glad we didn't
+start off in a storm, for I don't exactly like them when we're over the
+water."
+
+"We may get one yet," said Tom. "I don't just like the way the
+barometer is acting. It's falling pretty fast."
+
+"Bless my mercury tube!" cried Mr. Damon. "I hope we have no bad luck
+on this trip."
+
+"Oh, we can't help a storm or two," answered Tom. "I guess it won't do
+any harm to prepare for it."
+
+So everything was made snug, and movable articles on the small exposed
+deck of the airship were lashed fast. Then, as night settled down, our
+friends gathered about in the cheerful cabin, in the light of the
+electric lamps, and talked of what lay before them.
+
+As Mr. Damon could steer as well as Tom or Ned, he shared in the night
+watch. But Mr. Petrofsky was not expert enough to accept this
+responsibility.
+
+It was when Mr. Damon finished his watch at midnight, and called Tom,
+that he remarked.
+
+"Bless my umbrella, Tom. But I don't like the looks of the weather."
+
+"Why, what's it doing?"
+
+"It isn't doing anything, but it's clouding up and the barometer is
+going down."
+
+"I was afraid we were in for it," answered the young inventor. "Well,
+we'll have to take what comes."
+
+The airship plunged on her way, while her young pilot looked at the
+various gages, noting that to hold her way against the wind that had
+risen he would have to increase the speed of the motor.
+
+"I don't like it," murmured Tom, "I don't like it," and he shook his
+head dubiously.
+
+With a suddenness that was almost terrifying, the storm broke over the
+ocean about three o'clock that morning. There was a terrific clap of
+thunder, a flash of lighting, and a deluge of rain that fairly made the
+staunch Falcon stagger, high in the air as she was.
+
+"Come on, Ned!" cried Tom, as he pressed the electric alarm bell
+connected with his chum's berth. "I need you, and Mr. Damon, too."
+
+"What's the matter?" cried Ned, awakened suddenly from a sound sleep.
+
+"We're in a bad storm," answered Tom, "and I'll have to have help. We
+need more gas, to try and rise above it."
+
+"Bless my hanging lamp!" cried Mr. Damon, "I hope nothing happens!"
+
+And he jumped from his berth as the Falcon plunged and staggered
+through the storm that was lashing the ocean below her into white
+billow of foam.
+
+
+
+
+CHAPTER XII
+
+AN ACCIDENT
+
+
+For a few moments it seemed as if the Falcon would surely turn turtle
+and plunge into the seething ocean. The storm had burst with such
+suddenness that Tom, who was piloting his air craft, was taken
+unawares. He had not been using much power or the airship would have
+been better able to weather the blast that burst with such fury over
+her. But as it was, merely drifting along, she was almost like a great
+sheet of paper. Down she was forced, until the high-flying spray from
+the waves actually wet the lower part of the car, and Ned, looking
+through one of the glass windows, saw, in the darkness, the
+phosphorescent gleam of the water so near to them.
+
+"Tom!" he cried in alarm. "We're sinking!"
+
+"Bless my bath sponge! Don't say that!" gasped Mr. Damon.
+
+"That's why I called you," yelled the young inventor. "We've got to
+rise above the storm if possible. Go to the gas machine, Ned, and turn
+it on full strength. I'll speed up the motor, and we may be able to cut
+up that way. But get the gas on as soon as you can. The bag is only
+about half full. Force in all you can!
+
+"Mr. Damon, can you take the wheel? It doesn't make any difference
+which way we go as long as you keep her before the wind, and yank back
+the elevating rudder as far as she'll go! We must head up."
+
+"All right, Tom," answered the eccentric man, as he fairly jumped to
+take the place of the young inventor at the helm.
+
+"Can I do anything?" asked the Russian, as Tom raced for the engine
+room, to speed the motor up to the last notch.
+
+"I guess not. Everything is covered, unless you want to help Mr. Damon.
+In this blow it will be hard to work the rudder levers."
+
+"All right," replied Ivan Petrofsky, and then there came another
+sickening roll of the airship, that threatened to turn her completely
+over.
+
+"Lively!" yelled Tom, clinging to various supports as he made his way
+to the engine room. "Lively, all hands, or we'll be awash in another
+minute!"
+
+And indeed it seemed that this might be so, for with the wind forcing
+her down, and the hungry waves leaping up, as if to clutch her to
+themselves, the Falcon was having anything but an easy time of it.
+
+It was the work of but an instant however, when Tom reached the engine
+room, to jerk the accelerator lever toward him, and the motor responded
+at once. With a low, humming whine the wheels and gears redoubled their
+speed, and the great propellers beat the air with fiercer strokes.
+
+At the same time Tom heard the hiss of the gas as it rushed into the
+envelope from the generating machine, as Ned opened the release valve.
+
+"Now we ought to go up," the young inventor murmured, as he anxiously
+watched the barograph, and noted the position of the swinging pendulum
+which told of the roll and dip of the air craft.
+
+For a moment she hung in the balance, neither the increased speed of
+the propellers, nor the force of the gas having any seeming effect. Mr.
+Damon and the Russian, clinging to the rudder levers, to avoid being
+dashed against the sides of the pilot house, held them as far back as
+they could, to gain the full power of the elevation planes. But even
+this seemed to do no good.
+
+The power of the gale was such, that, even with the motor and gas
+machine working to their limit, the Falcon only held her own. She swept
+along, barely missing the crests of the giant waves.
+
+"She's got to go up! She's got to go up!" cried Tom desperately, as if
+by very will power he could send her aloft. And then, when there came a
+lull in the fierce blowing of the wind, the elevation rudder took hold,
+and like a bird that sees the danger below, and flies toward the
+clouds, the airship shot up suddenly.
+
+"That's it!" cried Tom in relief, as he noted the needle of the
+barograph swinging over, indicating an ever-increasing height. "Now
+we're safe."
+
+They were not quite yet, but at last the power of machinery had
+prevailed over that of the elements. Through the pelting rain, and amid
+the glare of the lightning, and the thunder of heaven's artillery, the
+airship forced her way, up and up and up.
+
+Setting the motor controller to give the maximum power until he
+released it, Tom hastened to the gas-generating apparatus. He found Ned
+attending to it, so that it was now working satisfactorily.
+
+"How about it, Tom?" cried his chum anxiously.
+
+"All right now, Ned, but it was a close shave! I thought we were done
+for, platinum mine, rescue of exiles, and all."
+
+"So did I. Shall I keep on with the gas?"
+
+"Yes, until the indicator shows that the bag is full. I'm going to the
+pilot house."
+
+Running there, Tom found that Mr. Damon and the Russian had about all
+they could manage. The young inventor helped them and then, when the
+Falcon was well started on her upward course, Tom set the automatic
+steering machine, and they had a breathing spell.
+
+To get above the sweep of the blast was no easy task, for the wind
+strata seemed to be several miles high, and Tom did not want to risk an
+accident by going to such an elevation. So, when having gone up about a
+mile, he found a comparatively calm area he held to that, and the
+Falcon sped along with the occupants feeling fairly comfortable, for
+there was no longer that rolling and tumbling motion.
+
+The storm kept up all night, but the danger was practically over,
+unless something should happen to the machinery, and Tom and Ned kept
+careful watch to prevent this. In the morning they could look down on
+the storm-swept ocean below them, and there was a feeling of
+thankfulness in their hearts that they were not engulfed in it.
+
+"This is a pretty hard initiation for an amateur," remarked Mr.
+Petrofsky. "I never imagined I should be as brave as this in an airship
+in a storm."
+
+"Oh, you can get used to almost anything," commented Mr. Damon.
+
+It was three days before the storm blew itself out and then came
+pleasant weather, during which the Falcon flew rapidly along. Our
+friends busied themselves about many things, talked of what lay before
+them, and made such plans as they could.
+
+It was the evening of the fifth day, and they expected to sight the
+coast of France in the morning. Tom was in the pilot house, setting the
+course for the night run, and Ned had gone to the engine room to look
+after the oiling of the motor.
+
+Hardly had he reached the compartment than there was a loud report, a
+brilliant flash of fire, and the machinery stopped dead.
+
+"What is it?" cried Tom, as he came in on the run, for the indicators
+in the pilot house had told him something was wrong.
+
+"An accident!" cried Ned. "A breakdown, Tom! What shall we do?"
+
+
+
+
+CHAPTER XIII
+
+SEEKING A QUARREL
+
+
+There was an ominous silence in the engine room, following the flash
+and the report. The young inventor took in every bit of machinery in a
+quick glance, and he saw at once that the main dynamo and magneto had
+short-circuited, and gone out of commission. Almost instantly the
+airship began to sink, for the propellers had ceased revolving.
+
+"Bless my barograph!" cried Mr. Damon, appearing on the scene. "We're
+sinking, Tom!"
+
+"It's all right," answered our hero calmly. "It's a bad accident, and
+may delay us, but there's no danger. Ned, start up the gas machine,"
+for they were progressing as an aeroplane then. "Start that up, and
+we'll drift along as a dirigible."
+
+"Of course! Why didn't I think of that!" exclaimed Ned, somewhat
+provoked at his own want of thought. The airship was going down
+rapidly, but it was the work of but a moment to start the generator,
+and then the earthward motion was checked.
+
+"We'll have to take our chance of being blown to France," remarked Tom,
+as he went over to look at the broken electrical machinery. "But we
+ought to fetch the coast by morning with this wind. Lucky it's blowing
+our way."
+
+"Then you can't use the propellers?" asked Mr. Petrofsky.
+
+"No," replied Tom, "but if we get to France I can easily repair this
+break. It's the platinum bearings again. I do hope we'll locate that
+lost mine, for I need a supply of good reliable metal.
+
+"Then we'll have to land in France?" asked the Russian, and he seemed a
+trifle uneasy.
+
+"Yes," answered Tom. "Don't you want to?"
+
+"Well, I was thinking of our safety."
+
+"Bless my silk hat!" cried Mr. Damon. "Where is the danger of landing
+there? I rather hoped we could spend some time in Paris."
+
+"There is no particular danger, unless it becomes known that I am an
+escaped exile, and that we are on our way to Siberia to rescue another
+one, and try to find the platinum mine. Then we would be in danger."
+
+"But how are they to know it?" asked Ned, who had come back from the
+gas machine.
+
+"France, especially in Paris and the larger cities, is a hot-bed of
+political spies," answered Mr. Petrofsky. "Russia has many there on the
+secret police, and while the objectors to the Czar's government are
+also there, they could do little to help us."
+
+"I guess they won't find out about us unless we give it away," was
+Tom's opinion.
+
+"I'm afraid they will," was the reply of the Russian. "Undoubtedly word
+has been cabled by the spies who annoyed us in Shopton, that we are on
+our way over here. Of course they can't tell where we might land, but
+as soon as we do land the news will be flashed all over, and the word
+will come back that we are enemies of Russia. You can guess the rest."
+
+"Then let's go somewhere else," suggested Mr. Damon.
+
+"It would be the same anywhere in Europe," replied Ivan Petrofsky.
+"There are spies in all the large centres."
+
+"Well, I've got to go to Paris, or some large city to get the parts I
+need," said Tom. "Unfortunately I didn't bring any along for the dynamo
+and magneto, as I should have done, and I can't get the necessary
+pieces in a small town. I'll have to depend on some big machine shop.
+But we might land in some little-frequented place, and I could go in to
+town alone."
+
+"That might answer," spoke the Russian, and it was decided to try that.
+
+Meanwhile it was somewhat doubtful whether they would reach France, for
+they were dependent on the wind. But it seemed to be blowing steadily
+in the desired direction, and Tom noted with satisfaction that their
+progress was comparatively fast. He tried to repair the broken
+machinery but found that he could not, though he spent much of the
+night over it.
+
+"Hurrah!" cried Ned when morning came, and he had taken an observation.
+"There's some kind of land over there."
+
+The wind freshened while they were at breakfast and using more gas so
+as to raise them higher Tom directed the course of his airship as best
+he could. He wanted to get high enough so that if they passed over a
+city they would not be observed.
+
+At noon it could be seen through the glass that they were over the
+outskirts of some large place, and after the Russian had taken an
+observation he exclaimed:
+
+"The environs of Paris! We must not land there!"
+
+"We won't, if the wind holds out," remarked Tom and this good fortune
+came to them. They succeeded in landing in a field not far from a small
+village, and though several farmers wondered much as the sight of the
+big airship, it was thought by the platinum-seekers that they would be
+comparatively safe.
+
+"Now to get the first train for Paris and get the things I need,"
+exclaimed Tom. He set to work taking off the broken pieces that they
+might be duplicated, and then, having inquired at an inn for the
+nearest railroad station, and having hired a rig, the young inventor
+set off.
+
+"Can you speak French?" asked Mr. Petrofsky. "If not I might be of
+service, but if I go to Paris I might be----"
+
+"Never mind," interrupted Tom. "I guess I can parley enough to get
+along with."
+
+He had a small knowledge of the tongue, and with that, and knowing that
+English was spoken in many places, he felt that he could make out. And
+indeed he had no trouble. He easily found his way about the gay
+capital, and located a machine shop where a specialty was made of parts
+for automobile and airship motors. The proprietor, knowing the broken
+pieces belonged to an aeroplane, questioned Tom about his craft but the
+young inventor knew better than to give any clew that might make
+trouble, so he returned evasive answers.
+
+It was nearly night when he got back to the place where he had left the
+Falcon, and he found a curious crowd of rustics grouped about it.
+
+"Has anything happened?" he asked of his friends.
+
+"No, everything is quiet, I'm glad to say," replied Mr. Petrofsky. "I
+don't think our presence will create stir enough so that the news of it
+will reach the spies in Paris. Still I will feel easier when we're in
+the air again."
+
+"It will take a day to make the repairs," said Tom, "and put in the new
+pieces of platinum. But I'll work as fast as I can."
+
+He and Ned labored far into the night, and were at it again the next
+morning. Mr. Damon and the Russian were of no service for they did not
+understand the machinery well enough. It was while Tom was outside the
+craft, filing a piece of platinum in an improvised vise, that a
+poorly-clothed man sauntered up and watched him curiously. Tom glanced
+at him, and was at once struck by a difference between the man's attire
+and his person.
+
+For, though he was tattered and torn, the man's face showed a certain
+refinement, and his hands were not those of a farmer or laborer in
+which character he obviously posed.
+
+"Monsieur has a fine airship there," he remarked to Tom.
+
+"Oh, yes, it'll do." Tom did not want to encourage conversation.
+
+"Doubtless from America it comes?"
+
+The man spoke English but with an accent, and certain peculiarities.
+
+"Maybe so," replied the young inventor.
+
+"Is it permit to inspect the interior?"
+
+"No, it isn't," came from Tom shortly. He had hurt his finger with the
+file, and he was not in the best of humor.
+
+"Ah, there are secrets then?" persisted the stranger.
+
+"Yes!" said Tom shortly. "I wish you wouldn't bother me. I'm busy,
+can't you see."
+
+"Ah, does monsieur mean that I have poor eyesight?"
+
+The question was snapped out so suddenly, and with such a menacing tone
+that Tom glanced up quickly. He was surprised at the look in the man's
+eyes.
+
+"Just as you choose to take it," was the cool answer. "I don't know
+anything about your eyes, but I know I've got work to do."
+
+"Monsieur is insulting!" rasped out the seeming farmer. "He is not
+polite. He is not a Frenchman."
+
+"Now that'll do!" cried Tom, thoroughly aroused. "I don't want to be
+too short with you, but I've really got to get this done. One side, if
+you please," and having finished what he was doing, he started toward
+the airship.
+
+Whether in his haste Tom did not notice where he was going, or whether
+the man deliberately got in his way I cannot say, but at any rate they
+collided and the seeming farmer went spinning to one side, falling down.
+
+"Monsieur has struck me! I am insulted! You shall pay for this!" he
+cried, jumping to his feet, and making a rush for our hero.
+
+"All right. It was your own fault for bothering me but if you want
+anything I'll give it to you!" cried Tom, striking a position of
+defense.
+
+The man was about to rush at him, and there would have been a fight in
+another minute, had not Mr. Petrofsky, stepping to the open window of
+the pilot house, called out:
+
+"Tom! Tom! Come here, quick. Never mind him!"
+
+Swinging away from the man, the young inventor rushed toward the
+airship. As he entered the pilot house he noticed that his late
+questioner was racing off in the direction of the village.
+
+"What is it? What's the matter?" he asked of the Russian. "Is something
+more wrong with the airship?"
+
+"No, I just wanted to get you away from that man.
+
+"Oh, I could take care of myself."
+
+"I know that, but don't you see what his game was? I listened to him.
+He was seeking a quarrel with you."
+
+"A quarrel?"
+
+"Yes. He is a police spy. He wanted to get you into a fight and then he
+and you would be arrested by the local authorities. They'd clap you
+into jail, and hold us all here. It's a game! They suspect us, Tom! The
+Russian spies have had some word of our presence! We must get away as
+quickly as we can!"
+
+
+
+
+CHAPTER XIV
+
+HURRIED FLIGHT
+
+
+The announcement of Ivan Petrofsky came to Tom with startling
+suddenness. He could say nothing for a moment, and then, as he realized
+what it meant, and as he recalled the strange appearance and actions of
+the man, he understood the danger.
+
+"Was he a spy?" he asked.
+
+"I'm almost sure he was," came the answer. "He isn't one of the
+villagers, that's sure, and he isn't a tourist. No one else would be in
+this little out-of-the-way place but a police official. He is in
+disguise, that is certain."
+
+"I believe so," agreed Tom. "But what was his game?"
+
+"We are suspected," replied the Russian. "I was afraid a big airship
+couldn't land anywhere, in France without it becoming known. Word must
+have been sent to Paris in the night, and this spy came out directly."
+
+"But what will happen now?"
+
+"Didn't you see where he headed for? The village. He has gone to send
+word that his trick failed. There will be more spies soon, and we may
+be detained or thrown into jail on some pretext or other. They may
+claim that we have no license, or some such flimsy thing as that.
+Anything to detain us. They are after me, of course, and I'm sorry that
+I made you run such danger. Perhaps I'd better leave you, and--"
+
+"No, you don't!" cried Tom heartily. "We'll all hang together or we'll
+hang separately', as Benjamin Franklin or some of those old chaps once
+remarked. I'm not the kind to desert a friend in the face of danger."
+
+"Bless my revolver! I should say not!" cried Mr. Damon. "What's it all
+about? Where's the danger?"
+
+They told him as briefly as possible, and Ned, who had been working in
+the motor room, was also informed.
+
+"Well, what's to be done?" asked Tom. "Had we better get out our
+ammunition, or shall I take out a French license."
+
+"Neither would do any good," answered the Russian. "I appreciate your
+sticking by me, and if you are resolved on that the only thing to do is
+to complete the repairs as soon as possible and get away from here."
+
+"That's it!" cried Ned. "A quick flight. We can get more gasolene here,
+for lots of autos pass along the road through the village. I found that
+out. Then we needn't stop until we hit the trail for the mine in
+Siberia!"
+
+"Hush!" cautioned the Russian. "You can't tell who may be sneaking
+around to listen. But we ought to leave as soon as we can."
+
+"And we will," said Tom. "I've got the magneto almost fixed!"
+
+"Let's get a hustle on then!" urged Ned. "That fellow meant business
+from his looks. The nerve of him to try to pick a quarrel that way."
+
+"I might have told by his manner that something was wrong," commented
+Tom, "but I thought he was a fresh tramp and I didn't take any pains in
+answering him. But come on, Ned, get busy."
+
+They did, with such good effect that by noon the machinery was in
+running shape again, and so far there had been no evidence of the
+return of the spy. Doubtless he was waiting for instructions, and
+something might happen any minute.
+
+"Now, Ned, if you'll see to having some gasolene brought out here, and
+the tanks filled, I'll tinker with the dynamo and get that in running
+shape," said Tom. "It only needs a little adjustment of the brushes.
+Then we'll be off."
+
+Ned started for the village where there was a gasolene depot. He fancied
+the villagers regarded him rather curiously, but he did not stop to ask
+what it meant. Another odd fact was that the usual crowd of curious
+rustics about the airship was missing. It was as though they suspected
+trouble might come, and they did not want to be mixed up in it.
+
+Never, Ned thought, had he seen a man so slow at getting ready the
+supply of gasolene. He was to take it out in a wagon, but first he
+mislaid the funnel, then the straining cloth, and finally he discovered
+a break in the harness that needed mending.
+
+"I believe he's doing it on purpose to delay us," thought the youth,
+"but it won't do to say anything. Something is in the wind." He helped
+the man all he could, and urged him in every way he knew, but the
+fellow seemed to have grown suddenly stupid, and answered only in
+French, though previously he had spoken some English.
+
+But at last Ned, by dint of hard work, got him started, and rode on the
+gasolene wagon with him. Once at the anchored airship, Tom and the
+others filled the reserve tanks themselves, though the man tried to
+help. However he did more harm than good, spilling several gallons of
+the fluid.
+
+"Oh, get away, and let us do it!" cried Tom at last. "I know what you--"
+
+"Easy!" cautioned Mr. Petrofsky, with a warning look, and Tom subsided.
+
+Finally the tanks were full, the man was paid, and he started to drive
+away.
+
+"Now to make a quick flight!" cried Tom, as he took his place in the
+pilot house, while Ned went to the engine room. "Full speed, Ned!"
+
+"Yes, and we'll need it, too," said the Russian.
+
+"Why?" asked Tom.
+
+"Look!" was the answer, and Ivan Petrofsky pointed across the field
+over which, headed toward the airship, came the man who had sought a
+quarrel with Tom. And with the spy were several policemen in uniform,
+their short swords dangling at their sides.
+
+"They're after us!" cried Mr. Damon. "Bless my chronometer they're
+after us!"
+
+"Start the motor, Ned! Start the motor!" cried Tom, and a moment later
+the hum of machinery was heard, while the police and the spy broke into
+a run, shouting and waving their hands.
+
+
+
+
+CHAPTER XV
+
+PURSUED
+
+
+Slowly the airship arose, almost too slowly to suit those on board who
+anxiously watched the oncoming officers. The latter had drawn their
+short swords, and at the sight of them Mr. Damon cried out:
+
+"Bless my football! If they jab them into the gas bag, Tom, we're done
+for!"
+
+"They won't get the chance," answered the young inventor, and he spoke
+truly, for a moment later, as the big propellers took hold of the air,
+the Falcon went up with a rush, and was far beyond the reach of the
+men. In a rage the spy shook his fist at the fast receding craft, and
+one of the policemen drew his revolver.
+
+"They're going to fire!" cried Ned.
+
+"They can't do much damage," answered Tom coolly. "A bullet hole in the
+bag is easily repaired, and anywhere else it won't amount to anything."
+
+The officer was aiming his revolver at the airship, now high above his
+head, but with a quick motion the spy pulled down his companion's arm,
+and they seemed to be disputing among themselves.
+
+"I wonder what that means?" mused Mr. Damon.
+
+"Probably they didn't want to risk getting into trouble," replied the
+Russian. "There are strict laws in France about using firearms, and as
+yet we are accused of no crime. We are only suspected, and I suppose
+the spy didn't want to get into trouble. He is on foreign ground, and
+there might be international complications."
+
+"Then you really think he was a spy?" asked Tom.
+
+"No doubt of it, and I'm afraid this is only the beginning of our
+trouble."
+
+"In what way?"
+
+"Well, of course word will be sent on ahead about us, and every where
+we go they'll be on the watch for us. They have our movements pretty
+well covered."
+
+"We won't make a descent until we get to Siberia," said Tom, "and I
+guess there it will be so lonesome that we won't be troubled much."
+
+"Perhaps," admitted the Russian, "but we will have to be on our guard.
+Of course keeping up in the air will be an advantage but they may--"
+
+He stopped suddenly and shrugged his shoulders.
+
+"What were you going to say?" inquired Ned.
+
+"Oh, it's just something that might happen, but it's too remote a
+possibility to work about. We're leaving those fellows nicely behind,"
+he added quickly, as though anxious to change the subject.
+
+"Yes, at this rate we'll soon be out of France," observed Tom, as he
+speeded the ship along still more. The young inventor wondered what Mr.
+Petrofsky had been going to say, but soon after this, some of the
+repaired machinery in the motor room needed adjusting, and the young
+inventor was kept so busy that the matter passed from his mind.
+
+The dynamo and magneto were doing much more efficient work since Tom
+had put the new platinum in, and the Falcon was making better time than
+ever before. They were flying at a moderate height, and could see
+wondering men, women and children rush out from their houses, to gaze
+aloft at the strange sight. Paris was now far behind, and that night
+they were approaching the borders of Prussia, as Mr. Petrofsky informed
+them, for he knew every part of Europe.
+
+The route, as laid down by Tom and the Russian, would send the airship
+skirting the southern coast of the Baltic sea, then north-west, to pass
+to one side of St. Petersburg, and then, after getting far enough to
+the north, so as to avoid the big cities, they would head due east for
+Siberia.
+
+"In that way I think we'll avoid any danger from the Russian police,"
+remarked the exile.
+
+For the next few days they flew steadily on at no remarkable speed, as
+the extra effort used more gasolene than Tom cared to expend in the
+motor. He realized that he would need all he had, and he did not want
+to have to buy any more until he was homeward bound, for the purchase
+of it would lead to questions, and might cause their detention.
+
+Mr. Damon gave his friends good meals and they enjoyed their trip very
+much, though naturally there was some anxiety about whether it would
+have a successful conclusion.
+
+"Well, if we don't find the platinum mine we'll rescue your brother, if
+there's a possible chance!" exclaimed Tom one day, as he sat in the
+pilot house with the exile. "Jove! it will be great to drop down, pick
+him up, and fly away with him before those Cossacks, or whoever has
+him, know what's up."
+
+"I'm afraid we can't make such a sensational rescue as that," replied
+Mr. Petrofsky. "We'll have to go at it diplomatically. That's the only
+way to get an exile out of Siberia. We must get word to him somehow,
+after we locate him, that we are waiting to help him, and then we can
+plan for his escape. Poor Peter! I do hope we can find him, for if he
+is in the salt or sulphur mines it is a living death!" and he shuddered
+at the memory of his own exile.
+
+"How do you expect to get definite information as to where he might
+be?" asked Tom.
+
+"I think the only thing to do is to get in touch with some of the
+revolutionists," answered the Russian. "They have ways and means of
+finding out even state secrets. I think our best plan will be to land
+near some small town, when we get to the edge of Siberia. If we can
+conceal the airship, so much the better. Then I can disguise myself and
+go to the village."
+
+"Will it be safe?" inquired the young inventor.
+
+"I'll have to take that chance. It's the only way, as I am the only one
+in our party who can speak Russian."
+
+"That's right," admitted Tom with a laugh. "I'm afraid I could never
+master that tongue. It's as hard as Chinese."
+
+"Not quite," replied his friend, "but it is not an easy language for an
+American."
+
+They talked at some length, and then Tom noticing, by one of the
+automatic gages on the wall of the pilot house, that some of the
+machinery needed attention, went to attend to it.
+
+He was rather surprised, on emerging from the motor compartment, to see
+Mr. Damon standing on the open after deck of the Falcon gazing
+earnestly toward the rear.
+
+"Star-gazing in the day time?" asked Tom with a laugh.
+
+"Bless my individuality!" exclaimed the odd man. "How you startled me,
+Tom! No, I'm not looking at stars, but I've been noticing a black speck
+in the sky for some time, and I was wondering whether it was my
+eyesight, or whether it really is something."
+
+"Where is it?"
+
+"Straight to the rear," answered Mr. Damon, "and it seems to be about a
+mile up. It's been hanging in the same place this ten minutes."
+
+"Oh, I see," spoke Tom, when the speck had been pointed out to him.
+"It's there all right, but I guess it's a bird, an eagle perhaps. Wait,
+I'll get a glass and we'll take a look."
+
+As he was taking the telescope down from its rack in the pilot house,
+Mr. Petrofsky saw him.
+
+"What's up?" asked the Russian, and the youth told him.
+
+"Must be a pretty big bird to be seen at such a distance as it is,"
+remarked Tom.
+
+"Maybe it isn't a bird," suggested Ivan Petrofsky. "I'll take a look
+myself," and, showing something of alarm in his manner, he followed Tom
+to where Mr. Damon awaited them. Ned also came out on deck.
+
+Quickly adjusting the glass, Tom focused it on the black speck. It
+seemed to have grown larger. He peered at it steadily for several
+seconds.
+
+"Is it a bird?" asked Mr. Damon.
+
+"Jove! It's another airship--a big biplane!" cried Tom, "and there
+seems to be three men in her."
+
+"An aeroplane!" gasped Ned.
+
+"Bless my deflecting rudder!" cried Mr. Damon. "An airship in this
+out-of-the-way place?" for they were flying over a desolate country.
+
+"And they're coming right after us," added Tom, as he continued to gaze.
+
+"I thought so," was the quiet comment of Mr. Petrofsky. "That is what I
+started to say a few days ago," he went on, "when I stopped, as I
+hardly believed it possible. I thought they might possibly send an
+aeroplane after us, as both the French and Russian armies have a number
+of fast ones. So they are pursuing us. I'm afraid my presence will
+bring you no end of trouble."
+
+"Let it come!" cried Tom. "If they can catch up to us they've got a
+good machine. Come on, Ned, let's speed her up, and make them take more
+of our star dust."
+
+"Wait a minute," advised the Russian, as he took the telescope from
+Tom, and viewed the ever-increasing speck behind them. "Are you sure of
+the speed of this craft?" he asked a moment later.
+
+"I never saw the one yet I couldn't pull away from, even after giving
+them a start," answered the young inventor proudly. "That is all but my
+little sky racer. I could let them get within speaking distance, and
+then pull out like the Congressional Limited passing a slow freight."
+
+"Then wait a few minutes," suggested Mr. Petrofsky. "That is an
+aeroplane all right, but I can't make out from what country. I'd like a
+better view, and if it's safe we can come closer."
+
+"Oh, it's safe enough," declared Tom. "I'll get things in shape for a
+quick move," and he hurried back to the machine room, while the others
+took turns looking at the oncoming aeroplane. And it was coming on
+rapidly, showing that it had tremendous power, for it was a very large
+one, carrying three men.
+
+"How do you suppose they got on our track?" asked Ned.
+
+"Oh, we must have been reported from time to time, as we flew over
+cities or towns," replied Mr. Petrofsky. "You know we're rather large,
+and can be seen from a good distance. Then too, the whole Russian
+secret police force is at the service of our enemies."
+
+"But we're not over Russia yet," said Mr. Damon.
+
+Ivan Petrofsky took the telescope and peered down toward the earth.
+They were not a great way above it, and at that moment they were
+passing a small village.
+
+"Can you tell where we are?" asked the odd man.
+
+"We are just over the border of the land of the Czar," was the quiet
+answer. "The imperial flag is flying from a staff in front of one of
+the buildings down there. We are over Russia."
+
+"And here comes that airship," called Ned suddenly.
+
+They gazed back with alarm, and saw that it was indeed so. The big
+aeroplane had come on wonderfully fast in the last few minutes.
+
+"Tom! Tom!" cried his chum. "Better get ready to make a sprint."
+
+"I'm all ready," calmly answered our hero. "Shall I go now?"
+
+"If you can give us a few seconds longer I may be able to tell who is
+after us," remarked Mr. Petrofsky, turning his telescope on the craft
+behind them.
+
+"I can let them get almost up to us, and get away," replied Tom.
+
+The Russian did not answer. He was gazing earnestly at the approaching
+aeroplane. A moment later he took the glass down from his eye.
+
+"It's our spy again," he said. "There are two others with him. That is
+one of the aeroplanes owned by the secret police. They are stationed
+all over Europe, ready for instant service, and they're on our trail."
+
+The pursuing craft was so near that the occupants could easily be made
+out with the naked eye, but it needed the glass to distinguish their
+features, and Mr. Petrofsky had done this.
+
+"Shall I speed up?" cried Tom.
+
+"Yes, get away as fast as you can!" shouted the Russian. "No telling
+what they may do," and then, with a hum and a roar the motor of the
+Falcon increased its speed, and the big airship shot ahead.
+
+
+
+
+CHAPTER XVI
+
+THE NIHILISTS
+
+
+From the pursuing aircraft came a series of sharp explosions that
+fairly rattled through the clear air.
+
+"Look out for bombs!" yelled Ned.
+
+"Bless my safety match!" cried Mr. Damon. "Are they anarchists?"
+
+"It's only their motor back-firing," cried Tom. "It's all right,
+They're done for now, we'll leave them behind."
+
+He was a true prophet, for with a continued rush and a roar the airship
+of our friends opened up a big gap between her rear rudders and the
+forward planes of the craft that was chasing her. The three men were
+working frantically to get their motor in shape, but it was a useless
+task.
+
+A little later, finding that they were losing speed, the three police
+agents, or spies, whatever they might be, had to volplane to earth and
+there was no need for the Falcon to maintain the terrific pace, to
+which Tom had pushed her. The pursuit was over.
+
+"Well, we got out of that luckily," remarked Ned, as he looked down to
+where the spies were making a landing. "I guess they won't try that
+trick again."
+
+"I'm afraid they will," predicted Mr. Petrofsky. "You don't know these
+government agents as I do. They never give up. They'll fix their
+engine, and get on our trail again."
+
+"Then we'll make them work for what they get," put in Tom, who, having
+set the automatic speed accelerator, had rejoined his companions.
+"We'll try a high flight and if they can pick up a trail in the air,
+and come up to us, they're good ones!"
+
+He ran to the pilot house, and set the elevation rudder at its limit.
+Meanwhile the spies were working frantically over their motor, trying
+to get it in shape for the pursuit. But soon they realized that this
+was out of the question, for the Falcon was far away, every moment
+going higher and higher, until she was lost to sight beyond the clouds.
+
+"I guess they'll have their own troubles now," remarked Ned. "We've
+seen the last of them."
+
+"Don't be too sure," spoke the Russian. "We may have them after us
+again. We're over the land of the Czar now, and they'll have
+everything their own way. They'll want to stop me at any cost."
+
+"Do you think they suspect that we're after the platinum?" asked Tom.
+
+"They may, for they know my brother and I were the only ones who ever
+located it, though unless I get in the exact neighborhood I'd have
+trouble myself picking it out. I remember some of the landmarks, but my
+brother is better at that sort of work than I am. But I think what they
+are mostly afraid of is that I have some designs on the life of, say
+one of the Grand Dukes, or some high official. But I am totally opposed
+to violent measures," went on Mr. Petrofsky. "I believe in a campaign
+of education, to gain for the down-trodden people what are their
+rights."
+
+"Do you think they know you are coming to rescue your brother?" asked
+Tom.
+
+"I don't believe so. And I hope not, for once they suspected that, they
+would remove him to some place where I never could locate him."
+
+Calmer feelings succeeded the excitement caused by the pursuit, and our
+friends, speculating on the matter, came to the conclusion that the
+aeroplane must have started from some Prussian town, as Mr. Petrofsky
+said there were a number of Russian secret police in that country. The
+Falcon was now speeding along at a considerable height, and after
+running for a number of miles, sufficient to preclude the possibility
+that they could be picked up by the pursuing aeroplane, Tom sent his
+craft down, as the rarefied atmosphere made breathing difficult.
+
+It was about three days after the chase when, having carefully studied
+the map and made several observations through the telescope of the
+Country over which they were traveling, that Ivan Petrofsky said:
+
+"If it can be managed, Tom, I think we ought to go down about here.
+There is a Russian town not far away, and I know a few friends there,
+There is a large stretch of woodland, and the airship can be easily
+concealed there.
+
+"All right," agreed the young inventor, "down we go, and I hope you get
+the information you want."
+
+Flying high so as to keep out of the observation of the inhabitants of
+the Russian town, the young inventor sent his craft in a circle about
+it, and, having seen a clearing in the forest, he made a landing there,
+the Falcon having come to rest a second time since leaving Shopton, now
+several thousand miles away.
+
+"We'll hide here for a few days," observed Tom, "and you can spend as
+much time in town as you like, Mr. Petrofsky."
+
+The Russian, disguising himself by trimming his beard, and putting on a
+pair of dark spectacles, went to the village that afternoon.
+
+While he was gone Tom, Ned and Mr. Damon busied themselves about the
+airship, making a few repairs that could not very well be done while it
+was in motion. As night came on, and the exile did not return, Tom
+began to get a little worried, and he had some notion of going to seek
+him, but he knew it would not be safe.
+
+"He'll come all right," declared Ned, as they sat down to supper. All
+about them was an almost impenetrable forest, cut here and there by
+paths along which, as Mr. Petrofsky had told them, the wood cutters
+drove their wagons.
+
+It was quite a surprise therefor, when, as they were leaving the table,
+a knock was heard on the cabin door.
+
+"Bless my electric bell!" cried Mr. Damon. "Who can that be?"
+
+"Mr. Petrofsky of course," answered Ned.
+
+"He wouldn't knock--he'd walk right in," spoke Tom, as he went to the
+door. As he opened it he saw several dark-bearded men standing there,
+and in their midst Mr. Petrofsky.
+
+For one moment our hero feared that his friend had been arrested and
+that the police had come to take the rest of them into custody. But a
+word from the exile reassured him.
+
+"These are some of my friends," said Mr. Petrofsky simply. "They are
+Nihilists which I am not, but--"
+
+"Nihilists yes! Always!" exclaimed one who spoke English. "Death to the
+Czar and the Grand Dukes! Annihilation to the government!"
+
+"Gently my friend, gently," spoke Mr. Petrofsky. "I am opposed to
+violence you know." And then, while his new friends gazed wonderingly
+at the strange craft, he led them inside. Tom and the others were
+hardly able to comprehend what was about to take place.
+
+
+
+
+CHAPTER XVII
+
+ON TO SIBERIA
+
+
+"Has anything happened?" asked Tom. "Are we suspected? Have they come
+to warn us?"
+
+"No, everything is all right, so far," answered Ivan Petrofsky. "I
+didn't have the success I hoped for, and we may have to wait here for a
+few days to get news of my brother. But these men have been very kind
+to me," he went on, "and they have ways of getting information that I
+have not. So they are going to aid me."
+
+"That's right!" exclaimed the one who had first spoken. "We will yet
+win you to our cause, Brother Petrofsky. Death to the Czar and the
+Grand Dukes!"
+
+"Never!" exclaimed the exile firmly. "Peaceful measures will succeed.
+But I am grateful for what you can do for me. They heard me describe
+your wonderful airship," he explained to Tom, "and wanted to see for
+themselves."
+
+The Nihilists were made welcome after Mr. Petrofsky had introduced
+them. They had strange and almost unpronounceable names for the ears
+of our friends, and I will not trouble you with them, save to say that
+the one who spoke English fairly well, and who was the leader, was
+called Nicolas Androwsky. There was much jabbering in the Russian
+tongue, when Mr. Petrofsky and Mr. Androwsky took the others about the
+craft, explaining how it worked.
+
+"I can't show you the air glider," said Tom, who naturally acted as
+guide, "as it would take too long to put together, and besides there is
+not enough wind here to make it operate."
+
+"Then you need much wind?" asked Nicolas Androwsky.
+
+"The harder the gale the better she flies," answered Tom proudly.
+
+"Bless my sand bag, but that's right!" exclaimed Mr. Damon, who, up to
+now had not taken much part in the conversation. He followed the party
+about the airship, keeping in the rear, and he eyed the Nihilists as if
+he thought that each one had one or more dynamite bombs concealed on
+his person.
+
+"Ha!" exclaimed Mr. Androwsky, turning suddenly to the odd man. "Are
+you not one of us? Do you not believe that this terrible kingdom should
+be destroyed--made as nothing, and a new one built from its ashes? Are
+you not one of us?" and with a quick gesture he reached into his pocket.
+
+"No! No!" exclaimed Mr. Damon, starting back. "Bless my election
+ticket! No! Never could I throw a bomb. Please don't give me one." Mr.
+Damon started to run away.
+
+"A bomb!" exclaimed the Nihilist, and then he drew from his pocket some
+pamphlets printed in Russian. "I have no bombs. Here are some of the
+tracts we distribute to convert unbelievers to our cause," he went on.
+"Read them and you will understand what we are striving for. They will
+convert you, I am sure."
+
+He went on, following the rest of the party, while Mr. Damon dropped
+back with Ned.
+
+"Bless my gas meter!" gasped the odd man, as he stared at the
+queerly-printed documents in his hand. "I thought he was going to give
+me a bomb to throw!"
+
+"I don't blame you," said Ned in a low voice. "They look like desperate
+men, but probably they have suffered many hardships, and they think
+their way of righting a wrong is the only way. I suppose you'll read
+those tracts," he added with a smile.
+
+"Hum! I'm afraid not," answered Mr. Damon. "I might just as well try to
+translate a Chinese laundry check. But I'll save 'em for souvenirs,"
+and he carefully put them in his pocket, as if he feared they might
+unexpectedly turn into a bomb and blow up the airship.
+
+The tour of the craft was completed and the Nihilists returned to the
+comfortable cabin where, much to their surprise, they were served with
+a little lunch, Mr. Damon bustling proudly about from the table to the
+galley, and serving tea as nearly like the Russians drink it as
+possible.
+
+"Well, you certainly have a wonderful craft here--wonderful," spoke Mr.
+Androwsky. "If we had some of these in our group now, we could start
+from here, hover over the palace of the Czar, or one of the Grand
+Dukes, drop a bomb, utterly destroy it, and come back before any of the
+hated police would be any the wiser."
+
+"I'm afraid I can't lend it to you," said Tom, and he could scarcely
+repress a shudder at the terrible ideas of the Nihilists.
+
+"It would never do," agreed Ivan Petrofsky. "The campaign of education
+is the only way."
+
+There were gutteral objections on the part of the other Russians, and
+they turned to more cheerful subjects of talk.
+
+"What are your plans?" asked Tom of the exile. "You say you can get no
+trace here of your brother?"
+
+"No, he seems to have totally disappeared from sight. Usually we
+enemies of the government can get some news of a prisoner, but poor
+Peter is either dead, or in some obscure mine, which is hidden away in
+the forests or mountains."
+
+"Maybe he is in the lost platinum mine," suggested Ned.
+
+"No, that has not been discovered," declared the exile, "or my friends
+here would have heard of it. That is still to be found."
+
+"And we'll do it, in the air glider," declared Tom. "By the way, Mr.
+Petrofsky, would it not be a good plan to ask your friends the location
+of the place where the winds constantly blow with such force. It occurs
+to me that in some such way we might locate the mine."
+
+"It would be of use if there was only one place of the gales," replied
+the exile. "But Siberia has many such spots in the mountain
+fastnesses--places which, by the peculiar formation of the land, have
+constant eddys of air over them. No, the only way is for us to go as
+nearly as possible to the place where my brother and I were imprisoned,
+and search there."
+
+"But what is that you said about us having to stay here, to get some
+news of your brother?" asked Tom.
+
+"I had hoped to get some information here," resumed Mr. Petrofsky, "but
+my friends here are without news. However, they are going to make
+inquiries, and we will have to stay here until they have an answer. It
+will be safe, they think, as there are not many police in town, and the
+local authorities are not very efficient. So the airship will remain
+here, and, from time to time I will go to the village, disguised, and
+see if any word has come."
+
+"And we will bring you news as soon as we get it," promised Mr.
+Androwsky. "You are not exactly one of us, but you are against the
+government, and, therefor, a brother. But you will be one of us in
+time."
+
+"Never," replied the exile with a smile. "My only hope now is to get my
+brother safely away, and then we will go and live in free America. But,
+Tom, I hope I won't put you out by delaying here."
+
+"Not a bit of it. More than half the object of our trip is to rescue
+your brother. We must do that first. Now as to details," and they fell
+to discussing plans. It was late that night when the Nihilists left the
+airship, first having made a careful inspection to see that they were
+not spied upon. They promised at once to set to work their secret
+methods of getting information.
+
+For several days the airship remained in the vicinity of the Russian
+town. Our friends were undisturbed by visitors, as they were in a
+forest where the villagers seldom came and the nearest wood-road was
+nearly half a mile off.
+
+Every day either Mr. Petrofsky went in to town to see the Nihilists or
+some of them came out to the Falcon, usually at night.
+
+"Well, have you any word yet?" asked Tom, after about a week had passed.
+
+"Nothing yet," answered the exile, and his tone was a bit hopeless.
+"But we have not given up. All the most likely places have been tried,
+but he is not there. We have had traces of him, but they are not fresh
+ones. He seems to have been moved from one mine to another. Probably
+they feared I would make an attempt to rescue him. But I have not given
+up. He is somewhere in Siberia."
+
+"And we'll find him!" cried Tom with enthusiasm.
+
+For three days more they lingered, and then, one night, when they were
+just getting ready to retire, there was a knock on the cabin door. Mr.
+Petrofsky had been to the village that day, and had received no news.
+He had only returned about an hour before.
+
+"Some one's knocking," announced Ned, as if there could be any doubt of
+it.
+
+"Bless my burglar alarm!" gasped Mr. Damon.
+
+"I'll see who it is," volunteered Mr. Petrofsky, and Tom looked toward
+the rack of loaded rifles, for that day a man, seemingly a wood cutter
+had passed close to the airship, and had hurried off as if he had seen
+a ghost.
+
+The knock was repeated. It might be their friends, and it might be--
+
+But Mr. Petrofsky solved the riddle by throwing back the portal, and
+there stood the Nihilist, Nicolas Androwsky.
+
+"Is there anything the matter?" asked the exile quickly.
+
+"We have news," was the cautious answer, as the Nihilist slipped in,
+and closed the door behind him.
+
+"News of my brother?"
+
+"Of your brother! He is in a sulphur mine in the Altai Mountains, near
+the city of Abakansk."
+
+"Where's that?" asked Tom for he had forgotten most of his Russian
+geography.
+
+"The Altai Mountains are a range about the middle of Siberia,"
+explained Mr. Petrofsky. "They begin at the Kirghiz Steppes, and run
+west. It is a wild and desolate place. I hope we can find poor Peter
+alive."
+
+"And this city of Abakansk?" went on the young inventor.
+
+"It is many miles from here, but I can give you a good map," said the
+Nihilist. "Some of our friends are there," he added with a half-growl.
+"I wish we could rescue all of them."
+
+"We'd like to," spoke Tom. "But I fear it is impossible. But now that
+we have a clew, come on! Let's start at once! It may be dangerous to
+stay here. On to Siberia!"
+
+
+
+
+CHAPTER XVIII
+
+IN A RUSSIAN PRISON
+
+
+The news they had waited for had come at last. It might be a false
+clew, but it was something to work on, and Tom was tired of inaction.
+Then, too, even after they had started, the prisoner might be moved and
+they would have to trace him again.
+
+"But that is the latest information we could get," said Mr. Androwsky.
+"It came through some of our Anarchist friends, and I believe is
+reliable. Can you soon make a thousand miles in your airship?"
+
+"Yes," answered Tom, "if I push her to the limit."
+
+"Then do so," advised the Nihilist, "for there is need of haste. In
+making inquiries our friends might incur suspicions and Peter Petrofsky
+may be exiled to some other place."
+
+"Oh, we'll get there," cried Tom. "Ned, see to the gas machine. Mr.
+Damon, you can help me in the pilot house."
+
+"Here is a map of the best route," said the Nihilist, as he handed one
+to Mr. Petrofsky. "It will take you there the shortest way. But how can
+you steer when high in the air?"
+
+"By compass," explained Tom. "We'll get there, never fear, and we're
+grateful for your clew."
+
+"I never can thank you enough!" exclaimed the exile, as he shook hands
+with Mr. Androwsky.
+
+The Nihilist left, after announcing that, in the event of the success
+of Tom and his friends, and the rescue of the exile from the sulphur
+mine, it would probably become known to them, as such news came through
+the Revolutionary channels, slowly but surely.
+
+"Here we go!" cried the young inventor gaily, as he turned the starting
+lever in the pilot house, and silently, in the darkness of the night,
+the Falcon shot upward. There was not a light on board, for, though
+small signal lamps had been kept burning when the craft was in the
+forest, to guide the Nihilists to her, now that she was up in the air,
+and in motion, it was feared that her presence would become known to
+the authorities of the town, so even these had been extinguished.
+
+"After we get well away we can turn on the electrics," remarked Tom,
+"and if they see us at a distance they may take us for a meteor. But,
+so close as this, they'd get wise in a minute."
+
+Mr. Damon, who had done all that Tom needed in the starting of the
+craft, went to the forward port rail, and idly looked down on the black
+forest they were leaving. He could just make out the clearing where
+they had rested for over a week, and he was startled to see lights
+bobbing in it.
+
+"I say, Mr. Petrofsky!" he called. "Did we leave any of our lanterns
+behind us?"
+
+"I don't believe so," answered the exile. "I'll ask Tom."
+
+"Lanterns? No," answered the young inventor. "Before we started I took
+down the only one we had out. I'll take a look."
+
+Setting the automatic steering apparatus, he joined Mr. Damon and the
+Russian. The lights were now dimly visible, moving about in the forest
+clearing.
+
+"It's just as if they were looking for something," said Tom. "Can it be
+that any of your Nihilist friends, Mr. Petrofsky are--"
+
+"Friends--no friends--enemies!" cried the Russian. "I understand now!
+We got away just in time. Those are police agents who are looking for
+us! They must have received word about our being there. Androwsky and
+the others never carry lights when they go about. They know the country
+too well, and then, too, it leads to detection. No, those are police
+spies. A few minutes later, and we would have been discovered."
+
+"As it is we're right over their heads, and they don't know it,"
+chuckled Tom. The airship was moving silently along before a good
+breeze, the propellers not having been started, and Tom let her drift
+for several miles, as he did not want to give the police spies a clew
+by the noise of the motor.
+
+The twinkling lights in the forest clearing disappeared from sight, and
+the seekers went on in the darkness.
+
+"Well, we've got the hardest part of our work yet ahead of us,"
+remarked Tom several hours later when, the lights having been set
+aglow, they were gathered in the main cabin. There was no danger of
+being seen now, for they were quite high.
+
+"We've done pretty well, so far," commented Ned. "I think we will have
+easier work rescuing Mr. Petrofsky's brother than in locating the mine.
+
+"I don't know about that," answered the Russian. "It is almost
+impossible to rescue a person from Siberia. Of course it is not going
+to be easy to locate the lost mine, but as for that we can keep on
+searching, that is if the air glider works, but there are so many
+forces to fight against in rescuing a prisoner."
+
+They had a long journey ahead of them, and not an easy route to follow,
+but as the days passed, and they came nearer and nearer to their goal,
+they became more and more eager.
+
+They were passing over a desolate country, for they avoided the
+vicinity of large towns and cities.
+
+"I wonder when we'll strike Siberia?" mused Tom one afternoon, as they
+sat on the outer deck, enjoying the air.
+
+"At this rate of progress, very soon," answered the exile, after
+glancing at the map. "We should be at the foot of the Ural mountains in
+a few hours, and across them in the night. Then we will be in Siberia."
+
+And he was right, for just as supper was being served, Ned, who had
+been making observations with a telescope, exclaimed:
+
+"These must be the Urals!"
+
+Mr. Petrofsky seized the glass.
+
+"They are," he announced. "We will cross between Orsk and Iroitsk. A
+safe place. In the morning we will be in Siberia--the land of the
+exiles."
+
+And they were, morning seeing them flying over a most desolate stretch
+of landscape. Onward they flew, covering verst after verst of
+loneliness.
+
+"I'm going to put on a little more speed," announced Tom, after a visit
+to the storeroom, where were kept the reserve tanks of gasolene. "I've
+got more fluid than I thought I had, and as we're on the ground now I
+want to hurry things. I'm going to make better time," and he yanked
+over the lever of the accelerator, sending the Falcon ahead at a rapid
+rate.
+
+All day this was kept up, and they were just making an observation to
+determine their position, along toward supper time, when there came the
+sound of another explosion from the motor room.
+
+"Bless my safety valve!" cried Mr. Damon. "Something has gone wrong
+again."
+
+Tom ran to the motor, and, at the same time the Falcon which was being
+used as an aeroplane and not as a dirigible, began to sink.
+
+"We're going down!" cried Ned.
+
+"Well, you know what to do!" shouted his chum. "The gas bag! Turn on
+the generator!"
+
+Ned ran to it, but, in spite of his quick action, the craft continued
+to slide downward.
+
+"She won't work!" he cried.
+
+"Then the intake pipe must be stopped!" answered the young inventor.
+"Never mind, I'll volplane to earth and we can make repairs. That
+magneto has gone out of business again."
+
+"Don't land here!" cried Ivan Petrofsky.
+
+"Why not?"
+
+"Because we are approaching a large town--Owbinsk I think it is--the
+police there will be there to get us. Keep on to the forest again!"
+
+"I can't!" cried Tom. "We've got to go down, police or no police."
+
+Running to the pilot house, he guided the craft so that it would safely
+volplane to earth. They could all see that now they were approaching a
+fairly large town, and would probably land on its outskirts. Through
+the glass Ned could make out people staring up at the strange sight.
+
+"They'll be ready to receive us," he announced grimly.
+
+"I hope they have no dynamite bombs for us," murmured Mr. Damon. "Bless
+my watch chain! I must get rid of that Nihilist literature I have about
+me, or they'll take me for one," and he tore up the tracts, and
+scattered them in the air.
+
+Meanwhile the Falcon continued to descend.
+
+"Maybe I can make quick repairs, and get away before they realize who
+we are," said Tom, as he got ready for the landing.
+
+They came down in a big field, and, almost before the bicycle wheels
+had ceased revolving, under the application of the brakes, several men
+came running toward them.
+
+"Here they come!" cried Mr. Damon.
+
+"They are only farmers," said the exile. He had donned his dark glasses
+again, and looked like anything but a Russian.
+
+"Lively, Ned!" cried Tom. "Let's see if we can't make repairs and get
+off again."
+
+The two lads frantically began work, and they soon had the magneto in
+running order. They could have gone up as an aeroplane, leaving the
+repairs to the gas bag to be made later but, just as they were ready to
+start, there came galloping out a troop of Cossack soldiers. Their
+commander called something to them.
+
+"What is he saying?" cried Tom to Mr. Petrofsky.
+
+"He is telling them to surround us so that we can not get a running
+start, such as we need to go up. Evidently he understands aeroplanes."
+
+"Well, I'm going to have a try," declared the young inventor.
+
+He jumped to the pilot house, yelling to Ned to start the motor, but it
+was too late. They were hemmed in by a cordon of cavalry, and it would
+have been madness to have rushed the Falcon into them, for she would
+have been wrecked, even if Tom could have succeeded in sending her
+through the lines.
+
+"I guess it's all up with us," groaned Ned.
+
+And it seemed to; for, a moment later, an officer and several aides
+galloped forward, calling out something in Russian.
+
+"What is it?" asked Tom.
+
+"He says we are under arrest," translated the exile.
+
+"What for?" demanded the young inventor.
+
+Ivan Petrofsky shrugged his shoulders.
+
+"It is of little use to ask--now," he answered. "It may be we have
+violated some local law, and can pay a fine and go, or we may be taken
+for just what we are, or foreign spies, which we are not. It is best to
+keep quiet, and go with them."
+
+"Go where?" cried Tom.
+
+"To prison, I suppose," answered the exile. "Keep quiet, and leave it
+to me. I will do all I can. I don't believe they will recognize me.
+
+"Bless my search warrant!" cried Mr. Damon. "In a Russian prison! That
+is terrible!"
+
+A few minutes later, expostulations having been useless, our friends
+were led away between guards who carried ugly looking rifles, and who
+looked more ugly and menacing themselves. Then the doors of the Russian
+prison of Owbinsk closed on Tom and his friends, while their airship
+was left at the mercy of their enemies.
+
+
+
+
+CHAPTER XIX
+
+LOST IN A SALT MINE
+
+
+The blow had descended so suddenly that it was paralyzing. Tom and his
+friends did not know what to do, but they saw the wisdom of the course
+of leaving everything to Ivan Petrofsky. He was a Russian, and he knew
+the Russian police ways--to his sorrow.
+
+"I'm not afraid," said Tom, when they had been locked in a large prison
+room, evidently set apart for the use of political, rather than
+criminal, offenders. "We're United States citizens, and once our
+counsel hears of this--as he will--there'll be some merry doings in
+Oskwaski, or whatever they call this place. But I am worried about what
+they may do to the Falcon."
+
+"Have no fears on that score," said the Russian exile. "They know the
+value of a good airship, and they won't destroy her."
+
+"What will they do then?" asked Tom.
+
+"Keep her for their own use, perhaps."
+
+"Never!" cried Tom. "I'll destroy her first!"
+
+"If you get the chance!" interposed the exile.
+
+"But we're American citizens!" cried Tom, "and--"
+
+"You forget that I am not," interrupted Mr. Petrofsky. "I can't claim
+the protection of your flag, and that is why I wish to remain unknown.
+We must act quietly. The more trouble we make, the more important they
+will know us to be. If we hope to accomplish anything we must act
+cautiously."
+
+"But my airship!" cried Tom.
+
+"They won't do anything to that right away," declared the Russian in a
+whisper for he knew sometimes the police listened to the talk of
+prisoners. "I think, from what I overheard when they arrested us, that
+we either trespassed on the grounds of some one in authority, who had
+us taken in out of spite, or they fear we may be English or French
+spies, seeking to find out Russian secrets."
+
+They were served with food in their prison, but to all inquiries made
+by Ivan Petrofsky, evasive answers were returned. He spoke in poor,
+broken Russian, so that he would not be taken for a native of that
+country. Had he been, he would have at once been in great danger of
+being accused as an escaped exile.
+
+Finally a man who, the exile whispered to his Companions, was the local
+governor, came to their prison. He eagerly asked questions as to their
+mission, and Mr. Petrofsky answered them diplomatically.
+
+"I don't think he'll make much out of what I told him," said the exile
+when the governor had gone. "I let him think we were scientists, or
+pleasure seekers, airshipping for our amusement. He tried to tangle me
+up politically, but I knew enough to keep out of such traps."
+
+"What's going to become of us?" asked Ned.
+
+"We will be detained a few days--until they find out more about us.
+Their spies are busy, I have no doubt, and they are telegraphing all
+over Europe about us."
+
+"What about my airship?" asked Tom.
+
+"I spoke of that," answered the exile. "I said you were a well-known
+inventor of the United States, and that if any harm came to the craft
+the Russian Government would not only be held responsible, but that the
+governor himself would be liable, and I said that it cost much money.
+That touched him, for, in spite of their power, these Russians are
+miserably paid. He didn't want to have to make good, and if it
+developed that he had made a mistake in arresting us, his superiors
+would disclaim all responsibility, and let him shoulder the blame. Oh,
+all is not lost yet, though I don't like the looks of things."
+
+Indeed it began to seem rather black for our friends, for, that night
+they were taken from the fairly comfortable, large, prison room, and
+confined in small stone cells down in a basement. They were separated,
+but as the cells adjoined on a corridor they could talk to each other.
+With some coarse food, and a little water, Tom and his friends were
+left alone.
+
+"Say I don't like this!" cried our hero, after a pause.
+
+"Me either," chimed in Ned.
+
+"Bless my burglar alarm!" exclaimed Mr. Damon. "It's an awful disgrace!
+If my wife ever heard of me being in jail--"
+
+"She may never hear of it!" interposed Tom.
+
+"Bless my heart!" cried the odd man. "Don't say such things."
+
+They discussed their plight at length, but nothing could be done, and
+they settled themselves to uneasy slumber. For two days they were thus
+imprisoned, and all of Mr. Petrofsky's demands that they be given a
+fair trial, and allowed to know the nature of the charge against them,
+went for naught. No one came to see them but a villainous looking
+guard, who brought them their poor meals. The governor ignored them,
+and Mr. Petrofsky did not know what to think.
+
+"Well, I'm getting sick of this!" exclaimed Tom--"I wish I knew where
+my airship was."
+
+"I fancy it's in the same place," replied the exile. "From the way the
+governor acted I think he'd be afraid to have it moved. It might be
+damaged. If I could only get word to some of my Revolutionary friends
+it might do some good, but I guess I can't. We'll just have to wait."
+
+Another day passed, and nothing happened. But that night, when the
+guard came to bring their suppers, something did occur.
+
+"Hello! we've got a new one!" exclaimed Tom, as he noted the man. "Not
+so bad looking, either."
+
+The man peered into his cell, and said something in Russian.
+
+"Nothing doing," remarked the young inventor with a short laugh. "Nixy
+on that jabbering."
+
+But, no sooner had the man's words penetrated to the cell of Ivan
+Petrofsky, that the exile called out something. The guard started,
+hastened to that cell door, and for a few seconds there was an excited
+dialogue in Russian.
+
+"Boys! Mr. Damon! We're saved!" suddenly cried out Mr. Petrofsky.
+
+"Bless my door knob! You don't say so!" gasped the odd man. "How? Has
+the Czar sent orders to release us."
+
+"No, but somehow my Revolutionary friends have heard about my arrest,
+and they have arranged for our release--secretly of course. This guard
+is affiliated with the Nihilist group that got on the trail of my
+brother. He bribed the other guard to let him take his place for
+to-night, and now--"
+
+"Yes! What is it?" cried Tom.
+
+"He's going to open the cell doors and let us out!"
+
+"But how can we get past the other guards, upstairs?" asked Ned.
+
+"We're not going that way," explained Mr. Petrofsky. "There is a secret
+exit from this corridor, through a tunnel that connects with a large
+salt mine. Once we are in there we can make our way out. We'll soon be
+free."
+
+"Ask him if he's heard anything of my airship?" asked Tom. Mr.
+Petrofsky put the question rapidly in Russian and then translated the
+answer.
+
+"It's in the same place."
+
+"Hurray!" cried Tom.
+
+Working rapidly, the Nihilist guard soon had the cell doors open, for
+he had the keys, and our friends stepped out into the corridor.
+
+"This way," called Ivan Petrofsky, as he followed their liberator, who
+spoke in whispers. "He says he will lead us to the salt mine, tell us
+how to get out and then he must make his own escape."
+
+"Then he isn't coming with us?" asked Ned.
+
+"No, it would not be safe. But he will tell us how to get out. It seems
+that years ago some prisoners escaped this way, and the authorities
+closed up the tunnel. But a cave-in of the salt mine opened a way into
+it again."
+
+They followed their queer guide, who led them down the corridor. He
+paused at the end, and then, diving in behind a pile of rubbish, he
+pulled away some boards. A black opening, barely large enough for a man
+to walk in upright, was disclosed.
+
+"In there?" cried Tom.
+
+"In there," answered Mr. Petrofsky. He and the guard murmured their
+good-byes, and then, with a lighted candle the faithful Nihilist had
+provided, and with several others in reserve, our friends stepped into
+the blackness. They could hear the board being pulled back into place
+behind them.
+
+"Forward!" cried the exile, and forward they went.
+
+It was not a pleasant journey, being through an uneven tunnel in the
+darkness. Half a mile later they emerged into a large salt mine, that
+seemed to be directly beneath the town. Work in this part had been
+abandoned long ago, all the salt there was left being in the shape of
+large pillars, that supported the roof. It sparkled dully in the candle
+light.
+
+"Now let me see if I remember the turnings," murmured Mr. Petrofsky.
+"He said to keep on for half an hour, and we would come out in a little
+woods not far from where our airship was anchored."
+
+Twisting and turning, here and there in the semi-darkness, stumbling,
+and sometimes falling over the uneven floor, the little party went on.
+
+"Did you say half an hour?" asked Tom, after a while.
+
+"Yes," replied the Russian.
+
+"We've been longer than that," announced the young inventor, after a
+look at his watch. "It's over an hour."
+
+"Bless my timetable!" cried Mr. Damon.
+
+"Are you sure?" asked Mr. Petrofsky.
+
+"Yes," answered Tom in a low voice.
+
+The Russian looked about him, flashing the candle on several turnings
+and tunnels. Suddenly Ned uttered a cry.
+
+"Why, we passed this place a little while before!" he said. "I remember
+this pillar that looks like two men wrestling!"
+
+It was true. They all remembered it when they saw it again.
+
+"Back in the same place!" mused the Russian. "Then we have doubled on
+our tracks. I'm afraid we're lost!"
+
+"Lost in a Russian salt mine!" gasped Tom, and his words sounded
+ominous in that gloomy place.
+
+
+
+
+CHAPTER XX
+
+THE ESCAPE
+
+
+For a space of several seconds no one moved or spoke. In the flickering
+light of the candle they looked at one another, and then at the
+fantastic pillars of salt all about them. Then Mr. Damon started
+forward.
+
+"Bless my trolley car!" he exclaimed. "It isn't possible! There must be
+some mistake. If we'll keep on we'll come out all right. You know your
+way about, don't you, Mr. Petrofsky?"
+
+"I thought I did, from what the guard told us, but it seems I must have
+taken a wrong turning."
+
+"Then it's easily remedied," suggested Tom "All we'll have to do will
+be to go to the place where we started, and begin over again."
+
+"Of course," agreed Ned, and they all seemed more cheerful.
+
+"And if we start out once more, and get lost again, then what?" asked
+Mr. Damon.
+
+"Well, if worst comes to worst, we can go, back in the tunnel, go to
+our cells and ask the guard to come with us and show us the way went on
+Tom.
+
+"Never!" cried the exile. "It would be the most dangerous thing in the
+world to go back to the prison. Our escape has probably been discovered
+by this time, and to return would only be to put our heads in the
+noose. We must keep on at any cost!"
+
+"But if we can't get out," suggested Tom, "and if we haven't anything
+to eat or drink, we--"
+
+He did not finish, but they all knew what he meant.
+
+"Oh, we'll get out!" declared Ned, who was something of an optimist.
+"You've been in salt mines before, haven't you, Mr. Petrofsky?"
+
+"Yes, I was condemned to one once, but it was not in this part of the
+country, and it was not an abandoned one. I imagine this was only an
+isolated mine, and that there are no others near it, so when they
+abandoned it, after all the salt was taken out, most people forgot
+about it. I remember once a party of prisoners were lost in a large
+salt mine, and were missed for several days."
+
+"What happened to them?" asked Tom.
+
+"I don't like to talk about it," replied the Russian with a shudder.
+
+"Bless my soul! Was it as bad as that?" asked Mr. Damon.
+
+"It was," replied the exile. "But now let's see if we can find our way
+back, and start afresh. I'll be more careful next time, and watch the
+turns more closely."
+
+But he did not get the chance. They could not find the tunnel whence
+they had started. Turn after turn they took, down passage after passage
+sometimes in such small ones that they almost had to crawl.
+
+But it was of no use. They could not find their way back to the
+starting place, and they could not find the opening of the mine. They
+had used two of the slow burning candles and they had only half a dozen
+or so left. When these were gone--
+
+But they did not like to think of that, and stumbled on and on. They
+did not talk much, for they were too worried. Finally Ned gasped:
+
+"I'd give a good deal for a drink of water."
+
+"So would I," added his chum. "But what's the use of wishing? If there
+was a spring down here it would be salt water. But I know what I would
+do--if I could."
+
+"What?" asked Mr. Damon.
+
+"Go back to the prison. At least we wouldn't starve there, and we'd
+have something to drink. If they kept us we know we could get
+free--sometime."
+
+"Perhaps never!" exclaimed Ivan Petrofsky. "It is better to keep on
+here, and, as for me, I would rather die here than go back to a Russian
+prison. We must--we shall get out!"
+
+But it was idle talk. Gradually they lost track of time as they
+staggered on, and they hardly knew whether a day had passed or whether
+it was but a few hours since they had been lost.
+
+Of their sufferings in that salt mine I shall not go into details.
+There are enough unpleasant things in this world without telling about
+that. They must have wandered around for at least a day and a half,
+and in all that while they had not a drop of water, and not a thing to
+eat. Wait, though, at last in their desperation they did gnaw the
+tallow candles, and that served to keep them alive, and, in a measure,
+alleviate their awful sufferings from thirst.
+
+Back and forth they wandered, up and down in the galleries of the old
+salt mine. They were merely hoping against hope.
+
+"It's worse than the underground city of gold," said Ned in hollow
+tones, as he staggered on. "Worse--much worse." His head was feeling
+light. No one answered him.
+
+It was, as they learned later, just about two days after the time when
+they entered the mine that they managed to get out. Forty-eight hours,
+most of them of intense suffering. They were burning their last candle,
+and when that was out they knew they would have the horrors of darkness
+to fight against, as well as those of hunger and thirst.
+
+But fate was kind to them. How they managed to hit on the right gallery
+they did not know, but, as they made a turn around an immense pillar of
+salt Tom, who was walking weakly in advance, suddenly stopped.
+
+"Look! Look!" he whispered. "Another candle! Someone--someone is
+searching for us! We are saved!"
+
+"It may be the police!" said Ned.
+
+"That is not a candle," spoke the Russian in hollow tones as he looked
+to where Tom pointed, to a little glimmer of light. "It is a star.
+Friends, we are saved, and by Providence! That is a star, shining
+through the opening of the mine. We are saved!"
+
+Eagerly they pressed forward, and they had not gone far before they
+knew that the exile was right. They felt the cool night wind on their
+hot cheeks.
+
+"Thank heaven!" gasped Tom, as he pushed on.
+
+A moment later, climbing over the rusted rails on which the mine cars
+had run with their loads of salt, they staggered into the open. They
+were free--under the silent stars!
+
+"And now, if we can only find the airship," said Tom faintly, "we can--"
+
+"Look there!" whispered Ned, pointing to a patch of deeper blackness
+that the surrounding night. "What's that."
+
+"The Falcon!" gasped Tom. He started toward her, for she was but a
+short distance from a little clump of trees into which they had emerged
+from the opening of the salt mine. There, on the same little plane
+where they had landed in her was the airship. She had not been moved.
+
+"Wait!" cautioned Ivan Petrofsky. "She may be guarded."
+
+Hardly had he spoken than there walked into the faint starlight on the
+side of the ship nearest them, a Cossack soldier with his rifle over
+his shoulder.
+
+"We can't get her!" gasped Ned.
+
+"We've got to get her!" declared Tom. "We'll die if we don't!"
+
+"But the guards! They'll arrest us!" said the exile.
+
+An instant later a second soldier joined the first, and they could be
+seen conversing. They then resumed their pacing around the anchored
+craft. Evidently they were waiting for the escaped prisoners to come up
+when they would give the alarm and apprehend them.
+
+"What can we do?" asked Mr. Damon.
+
+"I have a plan," said Tom weakly. "It's the only chance, for we're not
+strong enough to tackle them. Every time they go around on the far side
+of the airship we must creep forward. When they come on this side we'll
+lie down. I doubt if they can see us. Once we are on hoard we can cut
+the ropes, and start off. Everything is all ready for a start if they
+haven't monkeyed with her, and I don't think they have. We've got room
+enough to run along as an aeroplane and mount upward. It's our only
+hope."
+
+The others agreed, and they put the plan into operation. When the
+Cossack guards were out of sight the escaped prisoners crawled forward,
+and when the soldiers came into view our friends waited in silence.
+
+It took several minutes of alternate creeping and waiting to do this,
+but it was accomplished at last and unseen they managed to slip aboard.
+Then it was the work of but a moment to cut the restraining ropes.
+
+Silently Tom crept to the motor room. He had to work in absolute
+darkness, for the gleam of a light would have drawn the fire of the
+guards. But the youth knew every inch of his invention. The only
+worriment was whether or not the motor would start up after the
+breakdown, not having been run since it was so hastily repaired. Still
+he could only try.
+
+He looked out, and saw the guards pacing back and forth. They did not
+know that the much-sought prisoners were within a few feet of them.
+
+Ned was in the pilot house. He could see a clear field in front of him.
+
+Suddenly Tom pulled the starting lever. There was a little clicking,
+followed by silence. Was the motor going to revolve? It answered the
+next moment with a whizz and a roar.
+
+"Here we go!" cried the young inventor, as the big machine shot forward
+on her flight. "Now let them stop us!"
+
+Forward she went until Ned, knowing by the speed that she had momentum
+enough, tilted the elevation rudder, and up she shot, while behind, on
+the ground, wildly running to and fro, and firing their rifles, were
+the two amazed guards.
+
+
+
+
+CHAPTER XXI
+
+THE RESCUE
+
+
+"Have we--have we time to get a drink?" gasped Ned, when the aeroplane,
+now on a level keel, had been shooting forward about three minutes.
+Already it was beyond the reach of the rifles.
+
+"Yes, but take only a little," cautioned Tom. "Oh! it doesn't seem
+possible that we are free!"
+
+He switched on a few interior lights, and by their glow the faint and
+starving platinum-seekers found water and food. Their craft had,
+apparently, not been touched in their absence, and the machinery ran
+well.
+
+Cautiously they ate and drank, feeling their strength come back to
+them, and then they removed the traces of their terrible imprisonment,
+and set about in ease and comfort, talking of what they had suffered.
+
+Onward sped the aeroplane, onward through the night, and then Tom,
+having set the automatic steering gear, all fell into heavy slumbers
+that lasted until far into the next day.
+
+When the young inventor awoke he looked below and could see
+nothing--nothing but a sea of mist.
+
+"What's this?" he cried. "Are we above the clouds, or in a fog over
+some inland sea?"
+
+He was quite worried, until Ivan Petrofsky informed him that they were
+in the midst of a dense fog, which was common over that part of Siberia.
+
+"But where are we?" asked Ned.
+
+"About over the province of Irtutsk," was the answer. "We are heading
+north," he went on, as he looked at the compass, "and I think about
+right to land somewhere near where my brother is confined in the
+sulphur mine."
+
+"That's so; we've got to drop," said Tom. "I must get the gas pipe
+repaired. I wish we could see over what soft of a place we were so as
+to know whether it would be safe to land. I wish the mist would clear
+away."
+
+It did, about noon, and they noted that they were over a desolate
+stretch of country, in which it would be safe to make a landing.
+
+Bringing the aeroplane down on as smooth a spot as he could pick out,
+Tom and Ned were soon at work clearing out the clogged pipe of the gas
+generator. They had to take it out in the open air, as the fumes were
+unpleasant, and it was while working over it that they saw a shadow
+thrown on the ground in front of them. Startled they looked up, to see
+a burly Russian staring at them.
+
+The sudden appearance of a man in that lonely spot, his calm regard of
+the lads, his stealthy approach, which had made it possible for him to
+be almost upon them before they were aware of his presence, all this
+made them suspicious of danger. Tom gave a quick glance about, however,
+and saw no others--no Cossack soldiers, and as he looked a second time
+at the man he noted that he was poorly dressed, that his shoes were
+ragged, his whole appearance denoting that he had traveled far, and was
+weary and ill.
+
+"What do you make of this, Ned?" asked Tom, in a low voice.
+
+"I don't know what to make of it. He can't be an officer, in that rig,
+and he has no one with him. I guess we haven't anything to be afraid
+of. I'm going to ask him what he wants."
+
+Which Tom did in his plainest English. At once the man broke into a
+stream of confused Russian, and he kept it up until Tom held up his
+hand for silence.
+
+"I'm sorry, but I can't understand you," said the young inventor. "I'll
+call some one who can, though," and, raising his voice, he summoned
+Ivan Petrofsky who, with Mr. Damon, was inside the airship doing some
+small repairs.
+
+"There's a Russian out here, Mr. Petrofsky," said Tom, "and what he
+wants I can't make out."
+
+The exile was quickly on the scene and, after a first glance at the
+man, hurried up to him, grasped him by the hand and at once the two
+were talking such a torrent of hard-sounding words that Tom and Ned
+looked at each other helplessly, while Mr. Damon, who had come out,
+exclaimed:
+
+"Bless my dictionary! they must know each other."
+
+For several minutes the two Russians kept up their rapid-fire talk and
+then Mr. Petrofsky, evidently realizing that his friends must wonder at
+it, turned to them and said:
+
+"This is a very strange thing. This man is an escaped convict, as I
+once was. I recognized him by certain signs as soon as I saw him,
+though I had never met him before. There are certain marks by which a
+Siberian exile can never be forgotten," he added significantly. "He
+made his escape from the mines some time ago, and has suffered great
+hardships since. The revolutionists help him when they can, but he has
+to keep in concealment and travels from town to town as best he may. He
+has heard of our airship, I suppose from inquiries the revolutionists
+have been making in our behalf, and when he unexpectedly came upon us
+just now he was not frightened, as an ordinary peasant would have been.
+But he did not know I was aboard."
+
+"And does he know you?" asked Tom. "Does he know you are trying to
+rescue your brother?"
+
+"No, but I will tell him."
+
+There was another exchange of the Russian language, and it seemed to
+have a surprising result. For, no sooner had Ivan Petrofsky mentioned
+his brother, than the other, whose name was Alexis Borious seemed
+greatly excited. Mr. Petrofsky was equally so at the reply his new
+acquaintance made, and fairly shouted to Tom, Ned and Mr. Damon.
+
+"Friends, I have unexpected good news! It is well that we met this man
+or we would have gone many miles out of our way. My brother has been
+moved to another mine since the revolutionists located him for me. He
+is in a lonely district many miles from here. This man was in the same
+mine with him, until my brother was transferred, and then Mr. Borious
+escaped. We will have to change our plans."
+
+"And where are we to head for now?" asked Tom.
+
+"Near to the town of Haskaski, where my poor brother is working in a
+sulphur mine!"
+
+"Then let's get a move on!" cried Tom with enthusiasm. "Do you think
+this man will come with us, Mr. Petrofsky, to help in the rescue, and
+show us the place?"
+
+"He says he will," translated the exile, "though he is much afraid of
+our strange craft. Still he knows that to trust himself to it is better
+than being captured, and sent back to the mines to starve to death!"
+
+"Good!" cried Tom. "And if he wants to, and all goes well, we'll take
+him out of Russia with us. Now get busy, Ned, and we'll have this
+machine in shape again soon."
+
+While Ivan Petrofsky took his new friend inside, and explained to him
+about the workings of the Falcon, Tom and Ned labored over the gas
+machine with such good effect that by night it was capable of being
+used. Then they went aloft, and making a change in their route, as
+suggested by Mr. Borious, they headed for the desolate sulphur region.
+
+For several days they sailed on, and gradually a plan of rescue was
+worked out. According to the information of the newcomer, the best way
+to save Mr. Petrofsky's brother was to make the attempt when the
+prisoners were marched back from the mines to the barracks where they
+were confined.
+
+"It will be dark then," said Mr. Borious, "and if you can hover in your
+airship near at hand, and if Mr. Petrofsky can call out to his brother
+to run to him, we can take him up with us and get away before the
+guards know what we are doing."
+
+"But aren't the prisoners chained?" asked Tom.
+
+"No, they depend on guards to prevent escapes."
+
+"Then we'll try that way," decided the young inventor.
+
+On and on they sailed, the Falcon working admirably. Verst after verst
+was covered, and finally, one morning, Mr. Borious, who knew the
+country well, from having once been a prisoner there, said:
+
+"We are now near the place. If we go any closer we may be observed. We
+had better remain hidden in some grove of trees so that at nightfall we
+can go forth to the rescue."
+
+"But how can we find it after dark?" asked Ned.
+
+"You can easily tell by the lights in the barracks," was the answer. "I
+can stand in the pilot house to direct you, for nearly all these exile
+prisons are alike. The prisoners will march in a long line from the
+mine. Then for the rescue."
+
+It was tedious waiting that day, but it had to be done, and to Tom, who
+was anxious to effect the rescue, and proceed to the place of the winds
+to try his air glider, it seemed as if dusk would never come as they
+remained in concealment.
+
+But night finally approached and then the great airship went silently
+aloft, ready to hover over the prison ground. Fortunately there was
+little wind; and she could be used as a balloon, thus avoiding the
+noise of the motor.
+
+"The next thing I do, when I get home," remarked Tom, as they drifted
+along. "Will be to make a silent airship. I think they would be very
+useful."
+
+With Mr. Borious in the pilot house, to point out the way, Tom steered
+through the fast-gathering darkness. The Russian had soon become used
+to the airship, and was not at all afraid.
+
+"Can you go just where you want to, as a balloon?" asked the new guide.
+
+"No, but almost," replied Tom. "At the last moment I've got to take a
+chance and start the motor to send us just where we want to go. That's
+why I think a silent airship would be a great thing. You could get up
+on the enemy before he knew it."
+
+"There are the prison barracks," said the guide a little later, his
+talk being translated by Mr. Petrofsky. Below and a little ahead of
+them could been seen a cluster of lights.
+
+"Yes, that looks like a line of prisoners," remarked Ned, who was
+peering through a pair of night glasses.
+
+"Where?" asked Tom eagerly, and they were pointed out to him. He took
+an observation, and exclaimed:
+
+"There they are, sure enough. Now if your brother is only among them,
+Mr. Petrofsky, we'll soon have him on board."
+
+"Heaven grant that he may be there!" said the exile in a low voice.
+
+A moment later, the Falcon, meanwhile having been allowed to drift as
+close as possible to the dimly-seen line of prisoners, Tom set in
+motion the great motor, the propeller blades heating the air fiercely.
+
+At the sound there was a shout on the ground below, but before the
+excitement had time to spread, or before any of the guards could form a
+notion of what was about to take place, Tom had sent his craft to earth
+on a sharp slant, closer to the line of prisoners than he had dared to
+hope.
+
+Mr. Petrofsky sprang out on deck, and in a loud voice called in Russian:
+
+"Peter! Peter! If you are there, come here! Come quickly! It is I, your
+brother Ivan who speaks. I have come to save you--save you in the
+wonderful airship of Tom Swift! Come quickly and we will take you away!
+Peter Petrofsky!"
+
+For a moment there was silence, and then the sound of some one running
+rapidly was borne to the ears of the waiting ones. It was followed, a
+moment later, by angry shouts from the guards.
+
+"Quick! Quick, Peter!" cried the brother, "over this way!"
+
+For an instant only the exile showed a single electric flash light,
+that his brother might see in which direction to run. The echo of the
+approaching footsteps came nearer, the shouts of the guards redoubled,
+and then came the sound of many men running in pursuit.
+
+"Hurry, Peter, hurry!" cried Mr. Petrofsky, and, as he spoke in Russian
+the guards, of course, understood.
+
+Suddenly a rifle shot rang out, but the weapon seemed to have been
+fired in the air. A moment later a dark figure clambered aboard the
+airship.
+
+"Peter, is it you?" cried Ivan Petrofsky, hoarsely.
+
+"Yes, brother! But get away quickly or the whole guard will be swarming
+about here!"
+
+"Praise the dear Lord you are saved!"
+
+"Is it all right?" cried Tom, who wanted to make sure they were saving
+the right man.
+
+"Yes! Yes, Tom! Go quickly!" called Ivan Petrofsky, as he folded his
+brother in his arms. A moment later, with a roar, the Falcon shot away
+from the earth, while below sounded angry cries, confused shouts and
+many orders, for the guards and their officers had never known of such
+a daring rescue as this.
+
+
+
+
+CHAPTER XXII
+
+IN THE HURRICANE
+
+
+There was a volley of shots from the prison guards, and the flashes of
+the rifles cut bright slivers of flame in the darkness, but, so rapidly
+did the airship go up, veering off on a wide slant, under the skillful
+guidance of Tom that the shots did no harm.
+
+"Bless my bullet pouch!" cried Mr. Damon. "They must be quite excited."
+
+"Shouldn't wonder," calmly observed Ned, as he went to help his chum in
+managing the airship. "But it won't do them any good. We've got our
+man."
+
+"And right from under their noses, too," added Ivan Petrofsky
+exultingly. "This rescue of an exile will go down in the history of
+Russia."
+
+The two exile brothers were gazing fondly at each other, for now that
+the Falcon was so high, Tom ventured to turn on the lights.
+
+A moment later the three Russians were excitedly conversing, while Tom
+and Ned managed the craft, and Mr. Damon, after listening a moment to
+the rapid flow of the strange language, which quite fascinated him,
+hurried to the galley to prepare a meal for the rescued one, who had
+been taken away before he had had a chance to get his supper.
+
+His wonder at his startling and unexpected rescue may well be imagined,
+but the joy at being reunited to his brother overshadowed everything
+for the time being. But when he had a chance to look about, and see
+what a strange craft he was in, his amazement knew no bounds, and he
+was like a child. He asked countless questions, and Ivan Petrofsky and
+Mr. Borious took turns in answering them. And from now on, I shall give
+the conversation of the two new Russians just as if they spoke English,
+though of course it had to be translated by Ivan Petrofsky, Peter's
+brother.
+
+If Peter was amazed at being rescued in an airship, his wonder grew
+when he was served with a well-cooked meal, while high in the air, and
+while flying along at the rate of fifty miles an hour. He could not
+talk enough about it.
+
+By degrees the story of how Tom and his friends had started for Russia
+was told, and there was added the detail of how Mr. Borious came to be
+picked up.
+
+"But brother Ivan, you did not come all that distance to rescue me; did
+you?" asked Peter.
+
+"Yes, partly, and partly to find the platinum mine."
+
+"What? The lost mine that you and I stumbled upon in that terrible
+storm?"
+
+"That is the one, Peter."
+
+"Then, Tom Swift may as well return. I doubt if we can even locate the
+district where it was, and if we did find it, the winds blow so that
+even this magnificent ship could not weather the gales."
+
+"I guess he doesn't understand about my air glider," said Tom with a
+smile, when this was translated to him. "I wish I had a chance to put
+it together, and show him how it works."
+
+"Oh, it will work all right," replied Ned, who was very proud of his
+friend's inventive ability.
+
+"Now, what is the next thing to be done?" asked Tom, a little later
+that evening, when, supper having been served, they were sitting in the
+main cabin, talking over the events of the past few days. "I'd like to
+get on the track of that platinum treasure."
+
+"And we will do all in our power to aid you," said Ivan Petrofsky. "My
+brother and I owe much to you--in fact Peter owes you his life; do you
+not?" and he turned to him.
+
+"I do," was the firm answer.
+
+"Oh, nonsense!" exclaimed Tom, who did not like to be praised. "I
+didn't do much."
+
+"Much! You do not call taking me away from that place--that sulphur
+mine--that horrible prison barrack with the cruel guards--you do not
+call that much? My friend," spoke the Russian solemnly, "no one on
+earth has done so much for me as you have, and if it is the power of
+man to show you where that lost mine is, my brother and I will do so!"
+
+"Agreed," spoke Ivan quietly.
+
+"Then what plans shall we make?" asked Tom, after a little more talk.
+"Are we to go about indiscriminately, or is there any possible way of
+getting on the trail?"
+
+"My brother and I will try and decide on a definite route," spoke Ivan
+Petrofsky. "It is some time since I have seen him, and longer since we
+accidently found the mine together, but we will consult each other,
+and, if possible make some sort of a map."
+
+This was done the next day, the present maps aboard the Falcon being
+consulted, and the brothers comparing notes. They began to lay out a
+stretch of country in which it was most likely the lost mine lay. It
+took several days to do this, for sometimes one brother would forget
+some point, and again the other would. But at last they agreed on
+certain facts.
+
+"This is the nearest we can come to it," said Ivan Petrofsky to Tom.
+"The lost platinum mine lies somewhere between the city of Iakutsk and
+the first range of the Iablonnoi mountains. Those are the northern and
+southern boundaries. As for the western one, it is most likely the Lena
+river, and the eastern one the Amaga river. So you see you have quite a
+large stretch of country to search, Tom Swift."
+
+"Yes, I should say I had," agreed the young inventor. "But I have had
+harder tasks. Now that I know where to head for I'll get there as soon
+as possible."
+
+"And what will you do when you arrive?" asked Ned.
+
+"Fly about in the Falcon, in ever-widening circles, starting as near
+the centre of that area as possible," replied Tom. "And as soon as I
+run into a steady hurricane I'll know that I'm at the place of the big
+winds, and I'll get out my glider, for I'll be pretty sure to be near
+the place."
+
+"Bless my gas meter!" cried Mr. Damon. "That's the talk!"
+
+Tom put his plan into operation at once, by heading the nose of his
+craft for the desolate region mapped out by the Russian brothers.
+
+The days that followed were filled with weary searching. It was like
+the time when they had sought for the plain of the great ruined Temple
+in Mexico, that they might locate the underground city of gold. Only in
+this case they had no such landmark as a great Aztec ruin to guide them.
+
+What they were seeking for was something unseen, but which could be
+felt--a mysterious wind--a wind that might be encountered any time, and
+which might send the Falcon to the earth a wreck.
+
+The Russian brothers, staggering about in the storm, had seen the mine
+under different conditions from what it would be viewed now. Then it
+was winter in Siberia. Now it was summer, though it was not very warm.
+
+On and on sailed the Falcon. The weather could not have been better,
+but for once Tom wanted bad weather. He wanted a blow--the harder the
+better--and all eyes anxiously watched the anemometer, or wind gage.
+But ever it revolved lazily about in the gentle breeze.
+
+"Oh, for a hurricane!" cried Tom.
+
+He got his wish sooner than he anticipated. It was about two days after
+this, when they were going about in a great circle, about two hundred
+miles from the imaginary centre of the district in which the mine lay,
+that, as Mr. Damon was getting dinner a dish he was carrying to the
+table was suddenly whisked out of his hand.
+
+"I say, what's the matter?" he cried. "Bless my--"
+
+But he had no time to say more. The airship fairly stood on end, and
+then, turning completely about, was rapidly driven in the opposite
+direction, though her propellers were working rapidly.
+
+"What's up?" yelled Ned.
+
+"We are capsizing!" shouted Ivan Petrofsky, and indeed it seemed so,
+for the airship was being forced over.
+
+"I guess we've struck what we want!" cried Tom. "We're in a hurricane
+all right! This is the place of the big wind! Now for my air glider, if
+I can get the airship to earth without being wrecked! Ned, lend a hand!
+We've got our work cut out for us now!"
+
+
+
+
+CHAPTER XXIII
+
+THE LOST MINE
+
+
+For several moments it seemed as if disaster would overtake the little
+band of platinum-hunters. In spite of all that Tom and Ned could do,
+the Falcon was whipped about like a feather in the wind. Sometimes she
+was pointing her nose to the clouds, and again earthward. Again she
+would be whirling about in the grip of the hurricane, like some
+fantastic dancer, and again she would roll dangerously. Had she turned
+turtle it probably would have been the last of her and of all on board.
+
+"Yank that deflecting lever as far down as it will go!" yelled Tom to
+his chum.
+
+"I am. She won't go any farther."
+
+"All right, hold her so. Mr. Damon, let all the gas out of the bag. I
+want to be as heavy as possible, and get to earth as soon as we can."
+
+"Bless my comb and brush!" cried the odd man. "I don't know what's
+going to become of us."
+
+"You will know, pretty soon, if the gas isn't let out!" retorted Tom
+grimly, and then Mr. Damon hastened to the generator compartment, and
+opened the emergency outlet.
+
+Finally, by crowding on all the possible power, so that the propellers
+and deflecting rudders forced the craft down, Tom was able to get out
+of the grip of the hurricane, and landed just beyond the zone of it on
+the ground.
+
+"Whew! That was a narrow squeak!" cried Ned, as he got out. "How'd you
+do it, Tom?"
+
+"I hardly know myself. But it's evident that we're on the right spot
+now."
+
+"But the wind has stopped blowing," said Mr. Damon. "It was only a
+gust."
+
+"It was the worst kind of a gust I ever want to see," declared the
+young inventor. "My air glider ought to work to perfection in that. If
+you think the wind has died out, Mr. Damon, just walk in that
+direction," and Tom pointed off to the left.
+
+"Bless my umbrella, I will," was the reply and the odd man started off.
+He had not gone far, before he was seen to put his hand to his cap.
+Still he kept on.
+
+"He's getting into the blow-zone," said Tom in a low voice.
+
+The next moment Mr. Damon was seen to stagger and fall, while his cap
+was whisked from his head, and sent high into the air, almost instantly
+disappearing from sight.
+
+"Some wind that," murmured Ned, in rather awe-struck tones.
+
+"That's so," agreed his chum. "But we'd better help Mr. Damon," for
+that gentleman was slowly crawling back, not caring to trust himself on
+his feet, for the wind had actually carried him down by its force.
+
+"Bless my anemometer!" he gasped, when Tom and Ned had given him a hand
+up. "What happened?"
+
+"It was the great wind," explained Tom. "It blows only in a certain
+zone, like a draft down a chimney. It is like a cyclone, only that goes
+in a circle. This is a straight wind, but the path of it seems to be as
+sharply marked as a trail through the forest. I guess we're here all
+right. Does this location look familiar to you?" he asked of the
+Russian brothers.
+
+"I can't say that it does," answered Ivan. "But then it was winter when
+we were here."
+
+"And, another thing," put in Peter. "That wind zone is quite wide. The
+mine may be in the middle, or near the other edge."
+
+"That's so," agreed Tom. "We'll soon see what we can do. Come on, Ned,
+let's get the air glider out and put her together. She'll have a test
+as is a test, now."
+
+I shall not describe the tedious work of re-assembling Tom Swift's
+latest invention in the air craft line--his glider. Sufficient to say
+that it was taken out from where it had been stored in separate pieces
+on board the Falcon, and put together on the plain that marked the
+beginning of the wind zone.
+
+It was a curious fact that twenty feet away from the path of the wind
+scarcely a breeze could be felt, while to advance a little way into it
+meant that one would at once be almost carried off his feet.
+
+Tom tested the speed of it one day with a special anemometer, and found
+that only a few hundred feet inside the zone the wind blew nearly one
+hundred miles an hour.
+
+"What is it like inside, I wonder?" asked Ned.
+
+"It must be terrific," was his chum's opinion.
+
+"Dare you risk it, Tom?"
+
+"Of course. The harder it blows the better the glider works. In fact I
+can't make much speed in a hundred-mile wind for with us all on board
+the craft will be heavy, and you must remember that I depend on the
+wind alone to give me motion."
+
+"What do you think causes the wind to blow so peculiarly here Tom?"
+went on Ned.
+
+"Oh, it must be caused by high mountain ranges on either side, or the
+effects of heat and cold, the air being evaporated over a certain area
+because of great heat, say a volcano, or something like that; though I
+don't know that they have volcanoes here. That creates a vacuum, and
+other air rushes in to fill the vacant space. That's all wind is,
+anyhow, air rushing in to fill a vacuum, or low pressure zone, for you
+remember that nature abhors a vacuum."
+
+It took nearly a week to assemble the Vulture, as Tom had named his
+latest craft, from the fact that it could hover in the air motionless,
+like that great bird. At last it was completed and then, weights being
+taken aboard to steady it, all was ready for the test. Tom would have
+liked to have taken all his passengers in the glider, for it would work
+better then, but the three Russians were timid, though they promised to
+get aboard after the trial.
+
+The test came off early one morning, Tom, Ned and Mr. Damon being the
+only ones aboard. Bags of sand represented the others. The glider was
+wheeled to the edge of the wind zone and they took their places in the
+car. It was hard work for the gale, that had never ceased blowing for
+an instant since they found its zone, was very strong. But the glider
+remained motionless in it, for the wing planes, the rudders, and
+equalizing weights had been adjusted to make the strain of the wind
+neutral.
+
+"All ready?" asked Tom, when his chum and his friend were in the
+enclosed car of the glider.
+
+"As ready as I ever shall be," answered Ned.
+
+"Bless my suspenders! Let her go, Tom, and have it over with!" cried
+the odd man.
+
+The young inventor pulled a lever, and almost instantly the glider
+darted forward. A moment later it soared aloft, and the three Russians
+cheered. But their voices were lost in the roar of the hurricane, as
+Tom sent his craft higher and higher.
+
+It worked perfectly, and he could direct it almost anywhere. The wind
+acted as the motive power, the bending and warping wings, and the
+rudders and weights controlling its force.
+
+"I'm going higher, and see if I can remain stationary!" yelled Tom in
+Ned's ear. His chum only nodded. Mr. Damon was seated on a bench,
+clinging to the sides of it as if he feared he would fall off.
+
+Higher and higher went the Vulture, ever higher, until, all at once,
+Tom pulled on another lever and she was still. There she hung in the
+air, the wind rushing through her planes, but the glider herself as
+still and quiet as though she rested on the ground in a calm. She
+hardly moved a foot in either direction, and yet the wind, as evidenced
+by the anemometer was howling along at a hundred and twenty miles an
+hour!
+
+"Success!" cried Tom. "Success! Now we can lie stationary in any spot,
+and spy out the land through our telescope. Now we will find the lost
+platinum mine!"
+
+"Well, I'm not deaf," responded Ned with a smile, for Tom had fairly
+yelled as he had at the start, and there was no need of this now, for
+though the wind blew harder than ever it was not opposed to any of the
+weights or planes, and there was only a gentle humming sound as it
+rushed through the open spaces of the queer craft.
+
+Tom gave his glider other and more severe tests, and she answered every
+one. Then he came to earth.
+
+"Now we'll begin the search," he said, and preparations were made to
+that end. The Russians, now that they had seen how well the craft
+worked, were not afraid to trust themselves in her.
+
+As I have explained, there was an enclosed car, capable of holding six.
+In this were stores, supplies and food sufficient for several days.
+Tom's plan was to leave the airship anchored on the edge of the wind
+zone, as a sort of base of supplies or headquarters. From there he
+intended to go off from time to time in the wind-swept area to look for
+the lost mine.
+
+There were weary days that followed. Hour after hour was spent in the
+air in the glider, the whole party being aboard. Observation after
+observation was taken, sometimes a certain strata of wind enabling them
+to get close enough to the earth to use their eyes, while again they
+had to use the telescopes. They covered a wide section but as day after
+day passed, and they were no nearer their goal, even Tom optimistic as
+he usually was, began to have a tired and discouraged look.
+
+"Don't you see anything like the place where you found the mine?" he
+asked of the exile brothers.
+
+They could only shake their heads. Indeed their task was not easy, for
+to recognize the place again was difficult.
+
+More than a week passed. They had been back and forth to their base of
+supplies at the airship, often staying away over night, once remaining
+aloft all through the dark hours in the glider, in a fierce gale which
+prevented a landing. They ate and slept on board, and seldom descended
+unless at or near the place where they had left the Falcon. Once they
+completely crossed the zone of wind, and came to a calm place on the
+other side. It was as wild and desolate as the other edge.
+
+Nearly two weeks had passed, and Tom was almost ready to give up and go
+back home. He had at least accomplished part of his desire, to rescue
+the exile, and he had even done better than originally intended, for
+there was Mr. Borious who had also been saved, and it was the intention
+of the young inventor to take him to the United States.
+
+"But the platinum treasure has me beat, I guess," said Tom grimly. "We
+can't seem to get a trace of it."
+
+Night was coming on, and he had half determined to head back for the
+airship. Ivan Petrofsky was peering anxiously down at the desolate
+land, over which they were gliding. He and his brother took turns at
+this.
+
+They were not far above the earth, but landmarks, such as had to be
+depended on to locate the mine, could not readily be observed without
+the glass. Mr. Damon, with a pair of ordinary field glasses, was doing
+all he could to pick out likely spots, though it was doubtful if he
+would know the place if he saw it.
+
+However, as chance willed it, he was instrumental in bringing the quest
+to a close, and most unexpectedly. Peter Petrofsky was relieving his
+brother at the telescope, when the odd man, who had not taken his eyes
+from the field glasses, suddenly uttered an exclamation.
+
+"Bless my tooth-brush!" he cried. "That's a most desolate place down
+there. A lot of trees blown down around a lake that looks as black as
+ink."
+
+"What's that!" cried Ivan Petrofsky. "A lake as black as ink? Where?"
+
+"We just passed it!" replied Mr. Damon.
+
+"Then put back there, as soon as you can, Tom!" called the Russian. "I
+want to look at that place."
+
+With a long, graceful sweep the young inventor sent the glider back
+over the course. Ivan Petrofsky glued his eyes to the telescope. He
+picked out the spot Mr. Damon had referred to, and a moment later cried:
+
+"That's it! That's near the lost platinum mine! We've found it again,
+Tom--everybody! Don't you remember, Peter," he said turning to his
+brother, "when we were lost in the snow we crawled in among a tangle of
+trees to get out of the blast. There was a sheet of white snow near
+them, and you broke through into water. I pulled you out. That must
+have been a lake, though it was lightly frozen over then. I believe
+this is the lost mine. Go down, Tom! Go down!"
+
+"I certainly will!" cried the youth, and pulling on the descending
+lever he shunted the glider to earth.
+
+
+
+
+CHAPTER XXIV
+
+THE LEAKING TANKS
+
+
+Like a bird descending from some dizzy height, the Vulture landed close
+to the pool of black water. It was a small lake and the darkness must
+have been caused by its depth, for later when they took some out in a
+glass it was as clear as a crystal. Then, too, there might have been
+black rocks on the bottom.
+
+"Can it be possible that we are here at last?" cried Tom, above the
+noise of the gale, for the wind was blowing at a terrific rate. But our
+friends knew better now how to adjust themselves to it, and the lake
+was down in a valley, the sides of which cut off the power of the gale.
+As for the glider it was only necessary to equalize the balance and it
+would remain stationary in any wind.
+
+"This is the place! This is the place!" cried Ivan Petrofsky. "Don't
+you remember, Peter?"
+
+"Indeed I do! I have good cause to! This is where we found the
+platinum!"
+
+"Bless my soul!" cried Mr. Damon. "Where is it, in the lake?"
+
+"The mine itself is just beyond that barrier of broken and twisted
+trees," replied the elder Russian brother. "It is an irregular opening
+in the ground, as though once, centuries ago, an ancient people tried
+to get out the precious metal. We will go to it at once."
+
+"But it is getting late," objected Ned.
+
+"No matter," said Tom. "If we find any platinum we'll stay here all
+night, and longer if necessary to get a good supply. This is better
+than the city of gold, for we're in the open."
+
+"I should say we were," observed Mr. Damon, as he bent to the blast,
+which was strong, sheltered even as they were.
+
+"Will it be safe to remain all night?" asked Mr. Borious, with a glance
+about the desolate country.
+
+"We have plenty of food," replied Tom, "and a good place to stay, in
+the car of the glider. I don't believe we'll be attacked."
+
+"No, not here," said the elder Petrofsky. "But we still have to go back
+across Siberia to escape."
+
+"We'll do it!" cried Tom. "Now for the platinum treasure!"
+
+They went forward, and it was no easy work. For the wind still blew with
+tremendous force though nothing like what it did higher up. And the
+ground was uneven. They had to cling to each other and it was very
+evident that no airship, not even the powerful Falcon, could have
+reached the place. Only an air glider would answer.
+
+It took them half an hour to get to the opening of the ancient mine,
+and by that time it was nearly dark. But Tom had thought to bring
+electric torches, such as he had used in the underground city of gold,
+and they dispelled the gloom of the small cavern.
+
+"Will you go in?" asked Ivan Petrofsky, when they had come to the
+place. He looked at Tom.
+
+"Go in? Of course I'll go in!" cried our hero, stepping forward. The
+others followed. For some time they went on, and saw no traces of the
+precious metal. Then Ned uttered a cry, as he saw some dull, grayish
+particles imbedded in the earth walls of the shaft.
+
+"Look!" he cried.
+
+Tom was at his chum's side in a moment.
+
+"That's platinum!" cried the young inventor. "And of the very highest
+grade! But the lumps are very small."
+
+"There are larger ones beyond," said the younger Russian brother.
+
+Forward they pressed, and a moment later coming around a turn in the
+cavern where some earth had fallen away, evidently recently, Tom could
+not repress a cry of joy. For there, in plain sight, were many large
+lumps of the valuable metal, in as pure a state as it is ever found.
+For it is always mixed with other metals or chemicals.
+
+"Look at that!" cried Tom. "Look at that! Lumps as large as an egg!"
+and he dug some out with a small pick he had brought along, and stuffed
+them into his pocket.
+
+"Bless my check book!" cried Mr. Damon, "and that stuff is as valuable
+as gold!"
+
+"More so!" cried Tom enthusiastically.
+
+"Oh, here's a whopping big one!" cried Ned. "I'll bet it weighs ten
+pounds."
+
+"More than that!" cried Tom, as he ran over and began digging it out,
+and they found later that it did. Platinum is usually found in small
+granules, but there are records of chunks being found weighing twenty
+pounds while others, the size of pigeons' eggs, are not uncommon.
+
+"Say, this is great!" yelled Ned, discovering another large piece, and
+digging it out.
+
+"I am glad we could lead you to it," said the elder Russian brother.
+"It is a small return for what you did for us!"
+
+"Nonsense!" cried Tom. "These must be a king's ransom here. Everybody
+dig it out! Get all you can."
+
+They were all busy, but the light of the two torches Tom had brought
+was not sufficient for good and efficient work, so after getting
+several thousand dollars worth of the precious metal, they decided to
+postpone operations until morning, and come with more lights.
+
+They were at the work soon after breakfast, the night in the air glider
+having passed without incident. The treasure of platinum proved even
+richer than the Russians had thought, and it was no wonder the Imperial
+government had tried so hard to locate it, or get on the trail of those
+who sought it.
+
+"And it's all good stuff!" cried Tom eagerly. "Not like that low-grade
+gold of the underground city. I can make my own terms when I sell this."
+
+For three days our friends dug and dug in that platinum mine, so many
+years lost to man, and when they got ready to leave they had indeed a
+king's ransom with them. But it was to be equally divided. Tom insisted
+on this, as his Russian friends had been instrumental in finding it.
+Toward the end of the excavation large pieces were scarce, and it was
+evident that the mine was what is called a "lode."
+
+"Well, shall we go back now?" asked Tom one day, after the finish of
+their mining operations. The work was comparatively simple, as the
+platinum lumps had merely to be dug out of the sides of the cave. But
+the loneliness and dreariness of the place was telling on them all.
+
+"Can't we carry any more?" asked Ned.
+
+"We could, but it might not be safe. I don't want to take on too much
+weight, as my glider isn't as stable as the airship. But we have plenty
+of the metal.
+
+"Indeed we have," agreed Ivan Petrofsky. "Much of mine and my brother's
+will go toward helping relieve the sufferings of the Siberian exiles,"
+he added.
+
+"And mine, too," said Alexis Borious.
+
+They started back early the next morning in a more terrific gale than
+in any the glider had yet flown. But she proved herself a stanch craft,
+and soon they were at the place where they had left the airship. It was
+undisturbed.
+
+Four days were spent in taking apart the glider and packing it on board
+the Falcon. Then, with the platinum safely stored away Tom, with a last
+look at the desolate land that had been so kind to them, sent his craft
+on her homeward way.
+
+It was when they were near the city of Pirtchina, on the Obi river,
+that what might have proved a disastrous accident occurred. They were
+flying along high, and at great speed, for Tom wanted to make all the
+distance he could, to get out of Siberia the more quickly. They had had
+a fair passage so far, and were congratulating themselves that they
+would soon be in civilization again.
+
+Suddenly, Mr. Damon, who had been on the after deck, taking
+observations through a telescope, came running forward, crying out:
+
+"Tom! Tom! What is that water dripping from the back part of the
+airship?"
+
+"Water?" exclaimed Tom. "No water is dripping from there."
+
+"Come and look," advised Mr. Damon.
+
+The young inventor raced back with him. He saw a thin, white stream
+trickling down from the lower part of the craft. Tom sniffed the air
+suspiciously.
+
+"Gasolene! It's gasolene!" he cried. "We must have a leak in the supply
+tanks!"
+
+He dashed toward the reserve storeroom, and at that moment, with a
+suddenness that was startling, the motor stopped and the Falcon lurched
+toward the earth.
+
+
+
+
+CHAPTER XXV
+
+HOMEWARD BOUND--CONCLUSION
+
+
+"All right!" yelled Ned, as soon as he heard Tom's cry. "I've got her
+under control. We'll volplane down."
+
+"Is it dangerous? Are we in danger?" asked Peter Petrofsky of his
+brother, in Russian.
+
+"I guess there's no danger, where Tom Swift's concerned," was the
+answer. "I have not volplaned much, but it will be all right I think."
+
+And it was, for with Ned Newton to guide the craft, while Tom did his
+best to stop the leak, the craft came gently to earth on the outskirts
+of a fairly large Siberian city. Almost instantly the Falcon was
+surrounded by a curious throng.
+
+"You had better keep inside," said Ivan Petrofsky to his brother and
+Mr. Borious. "Descriptions of you are probably out broadcast by now,
+but I am still sufficiently disguised, I think."
+
+"But what is to be done?" demanded the younger Russian brother. "If the
+gasolene is gone, how can we leave here?"
+
+"Trust Tom Swift for that," was the reply. "Keep out of sight now,
+there is a large crowd outside."
+
+Tom came from the tank room. There was a despondent look on his face.
+
+"It's all gone--every drop," he said. "That's what made the motor stop."
+
+"What's gone?" asked Mr. Damon.
+
+"The gasolene. We sprung a leak in the main tank, somehow, and it all
+flowed out while we were flying along."
+
+"Haven't you any more?"
+
+"Not a bit. I was drawing on the reserve tank, hoping to get to
+civilization before I needed more. But its too late now. We will have
+to--"
+
+"Bless my snow shoes!" cried Mr. Damon. "Don't say we'll have to stay
+here--in Siberia! Don't say that. My wife--"
+
+"No, we won't have to stay here if we can get a supply of kerosene,"
+interrupted Tom. "The motor will burn that. The only trouble is that we
+may be detained. The authorities probably know us by this time, and are
+on the watch."
+
+"Then get it before they know we are here," advised Ned.
+
+"I'll try," said Tom, and he at once conferred with the elder
+Petrofsky. The latter said he was sure kerosene could be had in town,
+and, rather than risk going in themselves, they hired a wagoner who
+agreed, for liberal pay, to go and return with a quantity. Until then
+there was nothing to do but wait.
+
+Meanwhile the crowd of curiosity seekers grew. They thronged around the
+airship, some of them meddling with various devices, until Tom had to
+order them away with gestures.
+
+One particularly inquisitive man insisted on pulling or twisting
+everything, until he happened to touch a couple of live wires, giving
+himself quite a shock, and then he ran away howling. But still the
+crowd increased, and at last Mr. Petrofsky said:
+
+"I don't like this, Tom?"
+
+"Why not?" They were all inside the craft, looking out and waiting for
+the return of the man with the kerosene. The leak in the tank had
+proved to be a small one, and had quickly been soldered. It had been
+open a long time, which accounted for the large amount of gasolene
+escaping. "What don't you like, Mr. Petrofsky?"
+
+"So many men surrounding us. I believe some of them are officers
+dressed in civilians' clothes, and a Russian officer never does that
+unless he has some object."
+
+"And you think the object is--?"
+
+"To capture us."
+
+"If it was that, wouldn't they have done it long ago--when we first
+came down?"
+
+"No, they are evidently waiting for something perhaps for some high
+official, without whose orders they dare do nothing. Russia is overrun
+with officialdom."
+
+And a little later Ivan Petrofsky's suspicion proved true. There
+arrived a man in uniform, who spoke fairly good English, and who
+politely asked Tom if he would not delay the start of the airship,
+again, until the governor could arrive from his country place to see it.
+
+"We know you are going to leave us," said the Russian with a smile,
+"for you have sent for kerosene. But please wait."
+
+"If your governor comes soon we'll wait," replied Tom. "But we are in a
+hurry. I wish that kerosene fellow would get a move on," he murmured.
+
+"Oh, he will doubtless be here soon," said the officer. "Might I be
+permitted to come aboard and wait for my chief?"
+
+"Sorry, but it's not allowed," replied our hero, straining his eyes
+down the road for a sight of the wagoner. At last he came, and Tom
+breathed easier.
+
+But the crowd was bigger, and some of the men, though poorly dressed,
+seemed to be persons in authority. Tom had no doubt but what there was
+a plot afoot to detain him, and arrest the exiles, and that there were
+disguised soldiers in the throng. But they could not act without the
+governor's orders, and he was probably on his way with all haste.
+
+"Lively now, get that kerosene in the tanks!" cried Tom to the man,
+motioning in lieu of using Russian. The youth was not going to meet the
+governor if he could help it.
+
+Now it was a curious thing, but the more that wagoner and his helpers
+seemed to try to hurry, and pour the oil from the cans into the
+tank-opening of the airship, the slower they worked. They got in each
+others' way, dropped some cans, spilled others, and in general made
+such poor work at it that Tom saw there was something in the wind.
+
+"Ned!" he exclaimed, "they're doing all they can to detain us. We've
+got to put that oil in ourselves. Just as we did the gasolene in
+France. It's the same sort of a delay game."
+
+"Right, Tom! I'm with you."
+
+"And I'll warn the crowd back, by telling them we are likely to blow up
+any minute!" added Ivan Petrofsky, which warning he shouted in Russian
+a moment later.
+
+Backward leaped the throng, as though a bomb bad been thrown into their
+midst, even the supposed officers joining in the retreat. The oil wagon
+was now easy of access, and Tom and Ned, with Mr. Damon to aid them,
+hastened toward it. Then the work of filling the tanks went on in
+something like good old, United States fashion.
+
+The last gallon of kerosene had been put aboard, and Tom and Ned with
+Mr. Damon, had climbed on deck, when the gaily uniformed officer, who
+had requested the delay, came riding up furiously.
+
+"Hold! Hold! If you please!" he cried. "The governor has come. He wants
+to see you."
+
+"Too late!" answered Tom. "Give him our best regards and ask him to
+come to the United States if he wants to see us. Sorry we haven't cards
+handy. Ned, take the pilot house, and shoot her up sharp when you get
+the signal. I'm going to run the motor. I don't know just how she'll
+behave on the kerosene."
+
+"You must remain!" angrily cried the officer.
+
+"The United States doesn't take 'must' from anybody, from the Czar
+down!" cried Tom as he disappeared into the motor room. The window was
+open, and the youth turned on the power the official cried again to him:
+
+"Halt! Here comes the governor! I declared you arrested by his orders,
+and in the name of the Czar!"
+
+"Nothing doing!" yelled Tom, and then, looking from the window, he saw
+approaching a troop of Cossacks, in the midst of whom rode a man in a
+brilliant uniform--evidently the governor.
+
+"Stop! Stop!" cried the official.
+
+"Here we go, Ned!" yelled Tom, and turning on more power the Falcon
+arose swiftly, before the very eyes of the angry governor, and his
+staff of Cossack soldiers.
+
+Up and up she went, faster and faster, the motors working well on the
+kerosene. Higher and higher. The governor and his soldiers were
+directly below her now.
+
+"Stop! Stop! You must stop. The Imperial governor orders it!" yelled
+the officer, evidently his Excellency's aide-de-camp.
+
+"We can't hear you!" shouted Tom, waving his hand from the motor room
+window, and then, turning on still more power he flew over the city,
+taking his friends and the valuable supply of platinum with him. So
+surprised were the soldiers that they did not fire a shot, but had they
+done so it is doubtful if much damage could have been done.
+
+"And now for home!" cried Tom, and homeward hound the Falcon was after
+a perilous trip through two storms. But she weathered them well.
+
+In due season they reached Paris again, and now, having no reason for
+concealment, they flew boldly down, to change what remained of the
+kerosene for gasolene, as the motor worked better on that. The secret
+police learned that the exiles were aboard, but they could do nothing,
+as the offenses were political ones, and so Tom kept his friends safe.
+
+Then they started on the long voyage across the Atlantic, and though
+they had one bad experience in a storm over that mighty ocean, they got
+safely home to Shopton in due season.
+
+There is little more to tell. The platinum proved to be even more
+valuable than Tom had expected. He could have sold it all for a large
+sum, but he preferred to keep most of what he had for his inventive
+work, and he used considerable of it in his machinery. Ned disposed of
+his, selling Tom some at a lower price than market quotations, and the
+Russians got a good price for theirs, turning the money into the fund
+to help their fellow exiles. Mr. Damon also made a good donation to the
+cause, as did Tom and Ned.
+
+Mr. Petrofsky and his brother, with the other exile, joined friends in
+New York, and promised to come and see Tom when they could.
+
+"Well, I suppose you'll take a long vacation now," said Mary Nestor, to
+Tom, when he called on her one evening to present her a unique ring,
+with the stones set in some of the platinum he had dug in the Siberian
+mine.
+
+"Vacation? I have no time for vacations!" said the young inventor. "I'm
+soon going to work on my silent airship, and on some other things I
+have in mind. I want more adventures."
+
+"Oh, you greedy boy!" exclaimed Mary with a laugh.
+
+And what adventures Tom had next will be found in the next book of this
+series, which will be entitled, "Tom Swift in Captivity; Or, a Daring
+Escape by Airship."
+
+Tom had several offers to give exhibitions in his air glider, from
+aviation committees at various meets, but he declined.
+
+"I haven't time," he declared. "I'm too busy."
+
+"You ought to rest," his chum Ned advised him.
+
+"'Bless my alarm clock!' as Mr. Damon would say," exclaimed Tom. "The
+best rest is new work," and then he began sketching his ideas for a
+silent motor craft, during which we will take leave of him for a while.
+
+
+
+
+
+
+
+
+End of Project Gutenberg's Tom Swift and his Air Glider, by Victor Appleton
+
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+***Project Gutenberg's Etext of Tom Swift And His Air Glider***
+#12 in the Victor Appleton's Tom Swift Series
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+Tom Swift And His Air Glider
+
+by Victor Appleton
+
+June, 1997 [Etext #952]
+
+
+***Project Gutenberg's Etext of Tom Swift And His Air Glider***
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+
+
+
+
+
+TOM SWIFT AND HIS AIR GLIDER
+
+or
+
+Seeking the Platinum Treasure
+
+
+By
+
+VICTOR APPLETON
+
+
+
+CONTENTS
+
+I A Breakdown
+II A Daring Project
+III The Hand of the Czar
+IV The Search
+V A Clew from Russia
+VI Rescuing Mr. Petrofsky
+VII The Air Glider
+VIII In a Great Gale
+IX The Spies
+X Off in the Airship
+XI A Storm at Sea
+XII An Accident
+XIII Seeking a Quarrel
+XIV Hurried Flight
+XV Pursued
+XVI The Nihilists
+XVII On to Siberia
+XVIII In a Russian Prison
+XIX Lost in a Salt Mine
+XX The Escape
+XXI The Rescue
+XXII In the Hurricane
+XXIII The Lost Mine
+XXIV The Leaking Tanks
+XXV Homeward Bound--Conclusion
+
+
+
+
+
+TOM SWIFT AND HIS AIR GLIDER
+
+
+
+
+CHAPTER I
+
+A BREAKDOWN
+
+
+"Well, Ned, are you ready?"
+
+"Oh, I suppose so, Tom. As ready as I ever shall be."
+
+"Why, Ned Newton, you're not getting afraid; are you? And after you've
+been on so many trips with me?"
+
+"No, it isn't exactly that, Tom. I'd go in a minute if you didn't have
+this new fangled thing on your airship. But how do you know how it's
+going to work--or whether it will work at all? We may come a cropper."
+
+"Bless my insurance policy!" exclaimed a man who was standing near the
+two lads who were conversing. "You'd better keep near the ground, Tom."
+
+"Oh, that's all right, Mr. Damon," answered Tom Swift. "There isn't any
+more danger than there ever was, but I guess Ned is nervous since our
+trip to the underground city of gold."
+
+"I am not!" indignantly exclaimed the other lad, with a look at the
+young inventor. "But you know yourself, Tom, that putting this new
+propeller on your airship, changing the wing tips, and re-gearing the
+motor has made an altogether different sort of a craft of it. You,
+yourself, said it wasn't as reliable as before, even though it does go
+faster."
+
+"Now look here, Ned!" burst out Tom. "That was last week that I said it
+wasn't reliable. It is now, for I've tried it out several times, and
+yet, when I ask you to take a trip with me, to act as ballast--"
+
+"Is that all you want me for, Tom, to act as ballast? Then you'd better
+take a bag of sand--or Mr. Damon here!"
+
+"Me? I guess not! Bless my diamond ring! My wife hasn't forgiven me for
+going off on that last trip with you, Tom, and I'm not going to take any
+more right away. But I don't blame Ned--"
+
+"Say, look here!" cried Tom, a little out of patience, "you know me
+better than that, Ned. Of course your more than ballast--I want you to
+help me manage the craft since I made the changes on her. Now if you
+don't want to come, why say so, and I'll get Eradicate. I don't believe
+he'll be afraid, even if he--"
+
+"Hold on dar now, Massa Tom!" exclaimed an aged colored man, who was an
+all around helper at the Swift homestead, "was yo' referencin' t' me
+when yo' spoke?"
+
+"Yes, Rad, I was saying that if Ned wouldn't go up in the airship with
+me you would."
+
+"Well, now, Masa Tom, I shorely would laik t' 'blige yo', I shore would.
+But de fack ob de mattah am dat I has a mos' particular job ob white
+washin' t' do dish mornin', an' I 'spects I'd better be gittin' at it.
+It's a mos' particular job, an', only fo' dat, I'd be mos' pleased t'
+go up in de airship. But as it am, I mus' ax yo' t' 'scuse me, I really
+mus'," and the colored man shuffled off at a faster gait than he was in
+the habit of using.
+
+"Well, of all things!" gasped Tom. "I believe you're all afraid of the
+old airship, just because I wade some changes in her. I'll go up alone,
+that's what I will."
+
+"No, I'll go with you," interposed Ned Newton who was Tom's most
+particular chum. "I only wanted to be sure it was all right, that was
+all."
+
+"Well, if you've fully made up your mind," went on the young inventor, a
+little mollified, "lend me a hand to get her in shape for a run. I
+expect to make faster time than I ever did before, and I'm going to head
+out Waterford way. You'd better come along, Mr. Damon, and I'll drop you
+off at your house."
+
+"Bless my feather bed!" gasped the man. "Drop me off! I like that, Tom
+Swift!"
+
+"Oh, I didn't mean it exactly that way," laughed Tom. "But will you
+come."
+
+"No, thanks, I'm going home by trolley," and then as the odd man went in
+the house to speak to Tom's father, the two lads busied themselves about
+the airship.
+
+This was a large aeroplane, one of the largest Tom Swift had ever
+constructed, and he was a lad who had invented many kinds of machinery
+besides crafts for navigating the upper regions. It was not as large as
+his combined aeroplane and dirigible balloon of which I have told you in
+other books, but it was of sufficient size to carry three persons
+besides other weight.
+
+Tom had built it some years before, and it had seemed good enough then.
+Later he constructed some of different models, besides the big
+combination affair, and he had gone on several trips in that.
+
+He and his chum Ned, together with Eradicate Sampson, the colored man,
+and Mr. Damon, had been to a wonderful underground city of gold in
+Mexico, and it was soon after their return from this perilous trip that
+Tom had begun the work of changing his old aeroplane into a speedier
+craft.
+
+This had occupied him most of the Winter, and now that Spring had come
+he had a chance to try what a re-built motor, changed propellers, and
+different wing tips would do for the machine.
+
+The time had come for the test and, as we have seen, Tom had some
+difficulty in persuading anyone to go along with him? But Ned finally
+got over his feeling of nervousness.
+
+"Understand, Tom," spoke Ned, "it isn't because I don't think you know
+how to work an aeroplane that I hesitated. I've been up in the air with
+you enough times to know that you're there with the goods, but I don't
+believe even you know what this machine is going to do."
+
+"I can pretty nearly tell. I'm sure my theory is right."
+
+"I don't doubt that. But will it work out in practice?"
+
+"She may not make all the speed I hope she will, and I may not be able
+to push her high into the air quicker than I used to before I made the
+changes," admitted Tom, "but I'm sure of one thing. She'll fly, and she
+won't come down until I'm ready to let her. So you needn't worry about
+getting hurt."
+
+"All right--if you say so. Now what do you want me to do, Tom?"
+
+"Go over the wire guys and stays for the first thing. There's going to
+be lots of vibration, with the re-built motor, and I want everything
+tight."
+
+"Aye, aye, sir!" answered Ned with a laugh.
+
+Then he set at his task, tightening the small nuts, and screwing up the
+turn-buckles, while Tom busied himself over the motor. There was some
+small trouble with the carburetor that needed eliminating before it
+would feed properly.
+
+"How about the tires?" asked Ned, when he had finished the wires.
+
+"You might pump them up. There, the motor is all right. I'm going to try
+it now, while you attend to the tires."
+
+Ned had pumped up one of the rubber circlets of the small bicycle wheels
+on which the aeroplane rested, and was beginning on the second, when a
+noise like a battery of machine guns going off next to his ear startled
+him so that he jumped, tripped over a stone and went down, the air pump
+thumping him in the back.
+
+"What in the world happened, Tom?" he yelled, for he had to use all his
+lung power to be heard above that racket. "Did it explode?"
+
+"Explode nothing!" shouted Tom. "That's the re-built motor in action."
+
+"In action! I should say it was in action. Is it always going to roar
+like that?"
+
+Indeed the motor was roaring away, spitting fire and burnt gases from
+the exhaust pipe, and enveloping the aeroplane in a whitish haze of
+choking smoke.
+
+No, I have the muffler cut out, and that's why she barks so. But she
+runs easier that way, and I want to get her smoothed out a bit.
+
+"Whew! That smoke!" gasped his chum. "Why don't you--whew--this is more
+than I can stand," and holding his hands to his smarting eyes, Ned,
+gasping and choking, staggered away to where the air was better.
+
+"It is sort of thick," admitted Tom. "But that's only because she's
+getting too much oil. She'll clear in a few minutes. Stick around and
+we'll go up."
+
+Despite the choking vapor, the young inventor stuck to his task of
+regulating the motor, and in a short while the smoke became less, while
+the big propeller blades whirled about more evenly. Then Tom adjusted
+the muffler, and most of the noise stopped.
+
+"Come on back, and finish pumping up the tires," he shouted to Ned. "I'm
+going to stop her now, and then I'll give her the pressure test, and
+we'll take a trip."
+
+Having cleared his eyes of smoke, Ned came back to his task, and this
+having been finished, Tom attached a heavy spring balance, or scales, to
+the rope that held the airship back from moving when her propellers were
+whirling about.
+
+"How much pressure do you want?" asked Ned.
+
+"I ought to get above twelve hundred With the way the motor is geared,
+but I'll go up with ten. Watch the needle for me."
+
+It may be explained that when aeroplanes are tested on the earth the
+propellers are set in motion. This of course would send a craft whizzing
+over the ground, eventually to rise in the air, but for the fact that a
+rope, attached to the craft, and to some stationary object, holds it
+back.
+
+Now if this rope is hooked to a spring balance, which in turn is made
+fast to the stationary object, the "thrust" of the propellers will be
+registered in pounds on the scale of the balance. Anywhere from five
+hundred to nine hundred pounds of thrust will take a monoplane or
+biplane up. But Tom wanted more than this.
+
+Once more the motor coughed and spluttered, and the big blades whirled
+about so fast that they seemed like solid pieces of wood. Tom stood on
+the ground near the levers which controlled the speed, and Ned watched
+the scale.
+
+"How much?" yelled the young inventor.
+
+"Eight hundred."
+
+Tom turned on a little more gasolene.
+
+"How much?" he cried again.
+
+"Ten hundred. That'll do!"
+
+"No, I'm going to try for more."
+
+Again he advanced the spark and gasolene levers, and the comparatively
+frail craft vibrated so that it seemed as if she would fly apart.
+
+"Now?" yelled Tom.
+
+"Eleven hundred and fifty!" cried Ned.
+
+"Good! That'll do it. She'll give more after she's been running a while.
+We'll go up."
+
+Ned scrambled to his seat, and Tom followed. He had an arrangement so
+that he could slip loose the retaining rope from his perch whenever he
+was ready.
+
+Waiting until the motor had run another minute, the young inventor
+pulled the rope that released them. Over the smooth starting ground that
+formed a part of the Swift homestead darted the aeroplane. Faster and
+faster she moved, Ned gripping the sides of his seat.
+
+"Here we go!" cried Tom, and the next instant they shot up into the air.
+
+Ned Newton had ridden many times with his chum Tom, and the sensation of
+gliding through the upper regions was not new to him. But this time
+there was something different. The propellers seemed to take hold of the
+air with a firmer grip. There was more power, and certainly the speed
+was terrific.
+
+"We're going fast!" yelled Ned into Tom's ear.
+
+"That's right," agreed the young inventor. "She'll beat anything but my
+Sky Racer, and she'd do that if she was the same size." Tom referred to
+a very small aeroplane he had made some time before. It was like some
+big bird, and very swift.
+
+Up and onward went the remodeled airship, faster and faster, until, when
+several miles had been covered, Ned realized that the young inventor had
+achieved another triumph.
+
+"It's great, Tom! Great!" he yelled.
+
+"Yes, I guess it will do, Ned. I'm satisfied. If there was an
+international meet now I'd capture some of the prizes. As it is--"
+
+Tom stopped suddenly. His voice which had been raised to overcome the
+noise of even the muffled motor, sounded unnaturally loud, and no
+wonder, for the engine had ceased working!
+
+"What's the matter?" gasped Ned.
+
+"I don't know--a breakdown of some kind."
+
+"Can you get it going again?"
+
+"I'm going to try."
+
+Tom was manipulating various levers, but with no effect. The aeroplane
+was shooting downward with frightful rapidity.
+
+"No use!" exclaimed the young inventor. "Something has broken."
+
+"But We're falling, Tom!"
+
+"I know it. We've done it before. I'm going to volplane to earth."
+
+This, it may be explained, is gliding downward from a height with the
+engine shut off. Aeroplanists often do it, and Tom was no novice at the
+art.
+
+They shot downward with less speed now, for the young inventor had
+thrown up his headplanes to act as a sort of brake. Then, a little later
+they made a good landing in a field near a small house, in a rather
+lonely stretch of country, about ten miles from Shopton, where Tom
+lived.
+
+"Now to see what the trouble is," remarked our hero, as he climbed out
+of his seat and began looking over the engine. He poked in among the
+numerous cogs, wheels and levers, and finally uttered an exclamation.
+
+"Find it?" asked Ned.
+
+"Yes, it's in the magneto. All the platinum bearings and contact
+surfaces have fused and crystallized. I never saw such poor platinum as
+I've been getting lately, and I pay the highest prices for it, too. The
+trouble is that the supply of platinum is giving out, and they'll have
+to find a substitute I guess."
+
+"Can't we go home in her?" asked Ned.
+
+"I'm afraid not. I've got to put in new platinum bearings and contacts
+before she'll spark. I only wish I could get hold of some of the better
+kind of metal."
+
+The magneto of an aeroplane performs a service similar to one in an
+automobile. It provides the spark that explodes the charge of gas in the
+cylinders, and platinum is a metal, more valuable now than gold, much
+used in the delicate parts of the magneto.
+
+"Well, I guess it's walk for ours," said Ned ruefully.
+
+"I'm afraid so," went on Tom. "If I only had some platinum, I could--"
+
+"Perhaps I could be of service to you," suddenly spoke a voice behind
+them, and turning, the youths saw a tall, bearded man, who had evidently
+come from the lonely house. "Did I hear you say you needed some
+platinum?" he asked. He spoke with a foreign accent, and Tom at once put
+him down for a Russian.
+
+"Yes, I need some for my magneto," began the young inventor.
+
+"If you will kindly step up to my house, perhaps I can give you what you
+want," went on the man. "My name is Ivan Petrofsky, and I have only
+lately come to live here."
+
+"I'm Tom Swift, of Shopton, and this is my chum, Ned Newton," replied
+the young inventor, completing the introductions. He was wondering why
+the man, who seemed a cultured gentleman, should live in such a lonely
+place, and he was wondering too how he happened to have some platinum.
+
+"Will that answer?" asked Mr. Petrofsky, when they had reached his
+house, and he had handed Tom several strips of the precious silverlike
+metal.
+
+"Do? I should say it would! My, but that is the best platinum I've seen
+in a long while!" exclaimed Tom, who was an expert judge of this metal.
+"Where did you get it, if I may ask?"
+
+"It came from a lost mine in Siberia," was the unexpected answer.
+
+"A lost mine?" gasped Tom.
+
+"In Siberia?" added Ned.
+
+Mr. Petrofsky slowly nodded his head, and smiled, but rather sadly.
+
+"A lost mine," he said slowly, "and if it could be found I would be the
+happiest man on earth for I would then be able to locate and save my
+brother, who is one of the Czar's exiles," and he seemed shaken by
+emotion.
+
+Tom and Ned stood looking at the bearded man, and then the young
+inventor glanced at the platinum strips in his hand while a strange and
+daring thought came to him.
+
+
+
+
+CHAPTER II
+
+A DARING PROJECT
+
+
+While Tom and his chum are in the house of the Russian, who so strangely
+produced the platinum just when it was most needed, I am going to take
+just a little time to tell you something about the hero of this story.
+Those who have read the previous books of this series need no
+introduction to him, but in justice to my new readers I must make a
+little explanation.
+
+Tom Swift was an inventor, as was his father before him. But Mr. Swift
+was getting too old, now, to do much, though he had a pet
+invention--that of a gyroscope--on which he worked from time to time.
+Tom lived with his father in the village of Shopton, in New York state.
+His mother was dead, but a housekeeper, named Mrs. Baggert, looked after
+the wants of the inventors, young and old.
+
+The first book of the series was called "Tom Swift and His Motor-Cycle,"
+and in that I related how Tom bought the machine from a Mr. Wakefield
+Damon, of Waterford, after the odd gentleman had unintentionally started
+to climb a tree with it. That disgusted Mr. Damon with motor-cycling,
+and Tom had lots of fun on the machine, and not a few daring adventures.
+
+He and Mr. Damon became firm friends, and the oddity of the
+gentleman--mainly that of blessing everything he could think of--was no
+objection in Tom's mind. The young inventor and Ned Newton went on many
+trips together, Mr. Damon being one of the party.
+
+In Shopton lived Andy Foger, a bullying sort of a chap, who acted very
+meanly toward Tom at times. Another resident of the town was a Mr.
+Nestor, but Tom was more interested in his daughter Mary than in the
+head of the household. Add Eradicate Sampson, an eccentric colored man
+who said he got his name because he "eradicated" dirt, and his mule,
+Boomerang, and I think you have met the principal characters of these
+stories.
+
+After Tom had much enjoyment out of his motor-cycle, he got a motor
+boat, and one of his rivals on Lake Carlopa was this same Andy Foger,
+but our hero vanquished him. Then Tom built an airship, which had been
+the height of his ambition for some years. He had a stirring cruise in
+the Red Cloud, and then, deserting the air for the water, Tom and his
+father built a submarine, in which they went after sunken treasure. In
+the book, "Tom Swift and His Electric Runabout," I told how, in the
+speediest car on the road, Tom saved his father's bank from ruin, and in
+the book dealing with Tom's wireless message I related how he saved the
+Castaways of Earthquake Island.
+
+When Tom went among the diamond makers, at the request of Mr. Barco
+Jenks, and discovered the secret of phantom mountain the lad fancied
+that might be the end of his adventures, but there were more to follow.
+Going to the caves of ice, his airship was wrecked, but he and his
+friends managed to get back home, and then it was that the young
+inventor perfected his sky racer, in which he made the quickest flight
+on record.
+
+Most startling were his adventures in elephant land whither he went with
+his electric rifle, and he was the means of saving a missionary, Mr.
+Illingway and his wife, from the red pygmies.
+
+Tom had not been home from Africa long before he got a letter from this
+missionary, telling about an underground City in Mexico that was said to
+be filled with gold. Tom went there, and in the book, entitled, "Tom
+Swift in the City of Gold," I related his adventures.
+
+How he and his friends were followed by the Fogers, how they eluded
+them, made their way to the ruined temple in a small dirigible balloon,
+descended to the secret tunnel, managed to turn aside the underground
+river, and reach the city of gold with its wonderful gold statues--all
+this is told in the volume.
+
+Then, after pulling down, in the centre of the underground city, the big
+golden statue, the door of rock descended, and made our friends
+prisoners. They almost died, but Andy Foger and his father, in league
+with some rascally Mexicans and a tribe of head-hunters, finally made
+their way to the tunnel, and most unexpectedly, released Tom and his
+friends.
+
+There was a fight, but our hero's party escaped with considerable gold
+and safely reached Shopton. Now, after a winter spent in work, fixing
+over an old aeroplane, we again meet Tom.
+
+"Would you mind telling me something about where this platinum comes
+from, and if you can get any more of it?" asked Tom, after a pause,
+following the strange statement made by the Russian.
+
+"I will gladly tell you the story," spoke Mr. Petrofsky, "for I am much
+interested in inventions, and I formerly did something in that line
+myself, and I have even made a small aeroplane, so you see I know the
+need of platinum in a high power magneto."
+
+"But where did you get such pure metal?" asked Tom. "I have never seen
+it's equal."
+
+"There is none like it in all the world," went on the Russian, "and
+perhaps there never can be any more. I have only a small supply. But in
+Siberia--in the lost mine--there is a large quantity of it, as pure as
+this, needing only a little refining.
+
+"Can't we get some from there?" asked the young inventor eagerly. "I
+should think the Russian government would mine it, and export it."
+
+"They would--if they could find it," said Ivan Petrofsky dryly, "but
+they can't--no one can find it--and I have tried very hard--so hard, in
+fact, that it is the reason for my coming to this country--that and the
+desire to find and aid my brother, who is a Siberian exile."
+
+"This is getting interesting," remarked Ned to Tom in a low voice, and
+the young inventor nodded.
+
+"My brother Peter, who is younger than I by a few years, and I, are the
+last of our family," began Mr. Petrofsky, motioning Tom and Ned to take
+chairs. "We lived in St. Petersburg, and early in life, though we were
+of the nobility, we took up the cause of the common people."
+
+"Nihilists?" asked Ned eagerly, for he had read something of these
+desperate men.
+
+"No, and not anarchists," said Mr. Petrofsky with a sad smile. "Our
+party was opposed to violence, and we depended on education to aid our
+cause. Then, too, we did all we could in a quiet way to help the poor.
+My brother and I invented several life-saving and labor-saving machines
+and in this way we incurred the enmity of the rich contractors and
+government officials, who made more money the more people they could
+have working for them, for they made the people buy their food and
+supplies from them.
+
+"But my brother, and I persisted, with the result that we were both
+arrested, and, with a number of others were sent to Siberia.
+
+"Of the horrors we endured there I will say nothing. However, you have
+probably read much. In the country near which we were quartered there
+were many mines, some of salt and some of sulphur. Oh, the horrors of
+those mines! Many a poor exile has been lost in the windings of a salt
+mine, there to die miserably. And in the sulphur mines many die also,
+not from being lost so much as being overcome by stifling gases. It is
+terrible! And sometimes they are purposely abandoned by their guides,
+for the government wants to get rid of certain exiles.
+
+"But you are interested in platinum. One day my brother and I who had
+been sent to work in the salt mines, mistook a turning and wandered on
+and on for several miles, finally losing our way. We had food and water
+with us, or we would have perished, and, as it was, we nearly died
+before we finally found our way out of an abandoned opening.
+
+"We came out in the midst of a terrible snowstorm, and wandered about
+almost frozen. At last we were found by a serf who, in his sled, took us
+to his poor cottage. There we were warmed and fed back to life.
+
+"We knew we would be searched for, as naturally, our absence would lead
+to the suspicion that we had tried to escape. So as soon as we were
+able, we started back to the town where we were quartered. The serf
+wanted to take us in his sled, but we knew he might be suspected of
+having tried to aid us to get away, and he might be arrested. So we went
+alone.
+
+"As might have been expected, we became lost again, and wandered about
+for several days. But we had enough food to keep us alive. And it was
+during this wandering that I came upon the platinum mine. It was down in
+a valley, in the midst of a country densely wooded and very desolate.
+There was an outcropping of the ore, and rather idly I put some of it in
+my pockets. Then we wandered on, and finally after awful suffering in
+terrific storms, were found by a searching party and brought back to the
+barracks."
+
+"Did they think you had escaped?" asked Tom.
+
+"They did," replied the Russian, "and they punished us severely for it,
+in spite of our denials. In time I managed secretly to smelt the
+platinum ore, and I found I had some of the purest metal I had ever
+seen. I was wishing I could find the mine, or tell some of my friends
+about it, when one of the officers discovered the metal in my bed.
+
+"He demanded to know where I had gotten it, and knowing that refusal
+would only make it the worse for me I told him. There was considerable
+excitement, for the value of the discovery was recognized, and a search
+was at once made for the mine.
+
+"But, even with the aid we were able to give, it could not be located.
+Many expeditions went out to hunt for it but came back baffled. They
+could not penetrate that wild country."
+
+"They should have used an aeroplane," suggested Tom.
+
+"They did," replied the Russian quickly, "but it was of no use."
+
+"Why not?" the young inventor wanted to know.
+
+"Because of the terrific winds that almost continually sweep over that
+part of Siberia. They never seem to cease, and there are treacherous air
+currents and 'pockets' that engulfed more than one luckless aviator. Oh,
+you may be sure the Russian government spared no means of finding the
+lost platinum mine, but they could not locate it, or even get near the
+place where they supposed it to be.
+
+"Then, perhaps thinking that my brother and I were concealing something,
+they separated us. Where they sent him I do not know, but I was doomed
+to the sulphur mines. I was heartbroken, and I scarcely cared whether I
+lived or died. But an opportunity of escape came, and I took it. I
+wanted to save my brother, but I did not know where he was, and I
+thought if I could make my way to some civilized country, or to free
+America, I might later be able to save my brother.
+
+"I went to England, taking some of my precious platinum with me, and
+stayed there for two years. I learned your language, but my efforts to
+organize an expedition to search for the lost mine, and for my brother,
+failed. Then I came here, and--well, I am still trying."
+
+"My! That is certainly interesting!" exclaimed Ned, who had been all
+attention during the telling of the story.
+
+"And you certainly had a hard time," declared Tom. "I am much obliged
+for this platinum. Have you set a price on it? It is worth much more
+than the ordinary kind."
+
+"The price is nothing to you," replied the Russian, with a smile. "I am
+only too glad to help you fix your aeroplane. Will it take long? I
+should like to watch you."
+
+"Come along," invited Tom. "I can soon have it going again, and I'll
+give you a ride, if you like."
+
+"No, thank you, I'm hardly up to that yet, though I may be some day. The
+machine I made never flew well and I had several bad falls."
+
+Tom and Ned worked rapidly on the magneto, and soon had replaced the
+defective bits of platinum.
+
+"If the Russians had such a machine as this maybe they could have gotten
+to that mine," suggested Ned, who was very proud of Tom's craft.
+
+"It would be useless in the terrific winds, I fear," answered Ivan
+Petrofsky. "But now I care little for the mine. It is my brother whom I
+want to save. He must be in some of the Siberian mines, and if I had
+such a craft as this I might be able to rescue him."
+
+Tom Swift dropped the file he was using. A bright light sparkled in his
+eyes. He seemed strangely excited.
+
+"Mr. Petrofsky!" he cried, "would you let me have a try at finding your
+brother, and would you come with me?"
+
+"Would I?" asked the Russian eagerly. "I would be your debtor for life,
+and I would always pray for you, if you could help me to save my brother
+Peter."
+
+"Then we'll have a try at it!" cried Tom. "I've got a different airship
+than this--one in which I can travel three thousand miles without coming
+down. I haven't had any excitement since I got back from the city of
+gold. I'm going to Russia to help you rescue your brother from exile,
+and I'm also going to have a try for that lost platinum treasure!"
+
+"Thank heaven, there is some hope for poor Peter at last," murmured Mr.
+Petrofsky earnestly.
+
+"You never can get to the platinum mine," said Ned. The winds will tear
+your airship to pieces."
+
+"Not the kind I'm going to make," declared Tom. "It's going to be an air
+glider, that will fairly live on high winds. Ho! for Siberia and the
+platinum mines. Will you come?"
+
+"I don't know what you mean by an air glider, Tom Swift, but I'll go to
+help rescue my brother," was the quick answer, and then, with the light
+of a daring resolve shining in his eyes, the young inventor proceeded to
+get his aeroplane in shape for the trip back to Shopton.
+
+
+
+
+CHAPTER III
+
+THE HAND OF THE CZAR
+
+
+"Then you won't take a ride with me to-day?" asked the young inventor, of
+the Russian, as he completed the repairs to the magneto. "I'd like to
+have you meet my father, and a friend of his, Mr. Damon. Most likely
+he'll go to Siberia with us, if his wife will let him. I'd like to talk
+some plans over with you."
+
+"I shall certainly call on you," answered Ivan Petrofsky, "but," he
+added with a smile, "I think I should prefer to take my first ride in
+your larger airship--the one that doesn't come down so often."
+
+"Well, perhaps it is a little easier on an amateur," admitted Tom. "If
+you'll come over to our house at any time I'll take you out in it, or
+I'll call for you."
+
+"I'll come over in a few days," answered the escaped exile. "Then I'll
+tell you all I know of the locality where the platinum mine is located,
+and we can make our plans. In the meanwhile don't say anything about
+what I have told you."
+
+"Why?" asked Ned quickly.
+
+Mr. Petrofsky approached closer to the lads, and in a low voice said:
+
+"I am not sure about it, but of late I think I have been shadowed. I
+have seen strange men in the village near here and they have eyed me
+rather suspiciously. Then, too, I have surprised several men around my
+house. I live here all alone, you know, and do most of my own work, a
+woman coming in occasionally to clean. But I don't like these suspicious
+characters hanging about.
+
+"Who do you think they are?" asked Tom
+
+"I'm almost afraid to think, but from my past experience I think--nay, I
+fear--they may be spies, or agents of the Russian government"
+
+"Spies!" cried Ned.
+
+"Hush. Not so loud," cautioned Mr. Petrofsky. "They may even now be in
+hiding, especially since your aeroplane landed so near my house. They
+may see something suspicious even in that."
+
+"But why should the Russian government set spies on you?" asked Tom in a
+low voice.
+
+"For two reasons. I am an escaped exile, and I am not a citizen of the
+United States. Therefore I may be sent back to the sulphur mines. And
+another reason is that they may think I know the secret of the platinum
+treasure--the lost mine."
+
+"Say this is getting interesting!" exclaimed Tom. "If we are going to
+have a brush with some of the spies of the Russian government so much
+the better. I'm ready for 'em!"
+
+"So am I!" added Ned.
+
+"You don't know them," said Mr. Petrofsky, and he could not repress a
+shudder. "I hope they are not on my trail, but if they are--" he paused
+a moment, straightened himself up, and looked like what he was, a strong
+man--"if they are let them look out. I'd give my life to save my
+brother from the awful, living death to which he is consigned!"
+
+"And we're with you!" cried Tom, offering the Russian his hand. "We'll
+turn the trick yet. Now don't forget to come and see us. Come along,
+Ned. If I'm going to build an air glider I've got to get busy." And
+waving farewells to their new friend, the lads took their places in the
+aeroplane and were soon on their way to Shopton.
+
+"Well, what do you think of it?" asked Ned of his chum, as they sped
+along at a good elevation, the engine going at half speed to be less
+noisy and make talking easier.
+
+"Lots. I think we're in for a good time, an exciting one, anyhow, if
+what he says is true. But what in the world is an air glider, Tom?"
+
+"It's the last word in aeroplanes. You don't need a motor to make it
+go."
+
+"Don't need a motor?"
+
+"No, the wind does it all. It's a sort of aeroplane, but the motion
+comes from the wind, acting on different planes, and this is
+accomplished by shifting weights. In it you can stand still in a fierce
+gale, if you like."
+
+"How, by tying her fast on the ground?"
+
+"No, hovering in the air. It's all done by getting the proper balance.
+The harder the wind blows the better the air glider works, and that's
+why I think it will be just the thing for Siberia. I'm going to get
+right at work on it, and you'll help me; won't you?"
+
+"I sure will. Say, is platinum worth much?"
+
+"Worth much? I should say it was! It's got gold beat now, and the
+available supply is very small, and it's getting more scarce. Russia has
+several mines, and the metal is of good quality. I've used some Russian
+platinum, but the kind Mr. Petrofsky gave me to-day was better than the
+best I ever had. If we can only find that lost mine we'll be
+millionaires all right."
+
+"That's what we thought when we found the city of gold, but the gold
+wasn't of as fine a grade as we hoped."
+
+"Well, nothing like that can happen in this platinum deal. It sure is
+rich ore that Mr. Petrofsky and his brother found. Poor fellow! To think
+of being an exile in that awful country, not knowing where you may be
+sent next. No wonder Mr. Petrofsky wants to rescue him."
+
+"That's right. Well, here we are. I wonder what your father will say
+when he hears you're thinking of another expedition, Tom?"
+
+"Oh, he'll want me to go when he hears about the exile."
+
+"And I'm sure my folks will let me go. How about Mr. Damon?"
+
+"I don't believe we can hold him back. It will make a nice party, just
+you and I, and Mr. Damon and Mr. Petrofsky. That will leave room for the
+other Russian--if we can rescue him," and with that Tom shut off the
+engine and glided to earth.
+
+It may well be imagined that Mr. Swift was surprised when his son told
+him the latest news, but he did not offer any serious objection to the
+young inventor going to Siberia.
+
+"Only you must be careful," he said. "Those Russian officers are ugly
+when it comes to trying to take away any of their prisoners. And this
+air glider--I don't exactly know about that. It's a new machine, and you
+want to be sure it works before you trust yourself to it."
+
+"I will," promised Tom. "Say, I've got plenty of work ahead of me,--to
+get my big airship in shape, and build the glider. You'll have to help
+me, dad."
+
+"I will, son. Now tell me more about this Mr. Petrofsky." Which Tom did.
+
+The days that followed were indeed busy ones for Tom. The young inventor
+made a model air glider that sailed fairly well, but he knew it would
+have to work better to be successful, and he bent all his energies in
+that direction. Meanwhile Mr. Damon had been told of the prospective
+trip.
+
+"Bless my bank book! Of course I'll go," he said. "But don't say
+anything about it to my wife--that is, just yet. I'll bring her around
+to it gradually. She has always wanted a diamond ring set in platinum,
+and now I can get it for her. I know she'll let me go if I break it to
+her gently."
+
+It may be mentioned here that many valuable diamonds are now set in
+platinum instead of gold.
+
+"I want to keep busy," said Mr. Damon, so Tom set him, Ned and Eradicate
+at the task of getting the big airship in shape for the trip. This air
+craft has not figured in any of my previous stories, but as it is so
+nearly like the one that was crushed in the caves of ice, I will not
+give a description of it here. Those who care to may refer to the book
+telling of Tom's trip to the caves of ice for a detailed account of the
+craft.
+
+Sufficient to say that this latest airship, named the Falcon, was the
+largest Tom had ever built. It contained much room, many comforts, and
+could sail for several thousand miles without descending, except in case
+of accident. It was a combined dirigible balloon and aeroplane, and
+could be used as either, the necessary gas being made on board. It was
+large enough to enable the air glider to be taken on it in sections.
+
+It was about a week after their first meeting with him, that Ivan
+Petrofsky paid a visit to the Swift home. He was warmly welcomed by the
+aged inventor and Mr. Damon, and, closeted in the library of the house,
+he proceeded to go more into details of his own and his brother's exile
+to Siberia, and to tell about the supposed location of the lost platinum
+mine.
+
+"I don't believe we can start for several weeks yet," said Tom, after
+some discussion. "It will take me that long to make the glider."
+
+"And I, too, need a little time," said the Russian. "I will write to
+some friends in St. Petersburg and perhaps they can get some information
+for us, as to where my brother is.
+
+"That will be good," declared Mr. Damon. "Bless my icicle! But the more
+I think of this trip the better I like it!"
+
+It was arranged that the Russian should call again soon, when the plans
+would be nearer in shape, and in the meanwhile he must learn all he
+could from revolutionary friends in Siberia.
+
+It was a week after this, during which Tom, Ned and the others had been
+very busy, that Tom decided to take a trip to see their Russian friend.
+They had not heard from him since his visit, and Tom wanted to learn
+something about the strength of the Siberian winds.
+
+He and Ned went in one of the small airships and soon they were hovering
+over the grounds surrounding the lonely house where Ivan Petrofsky
+lived.
+
+"He doesn't seem to be at home," remarked Ned, as they descended and
+approached the dwelling.
+
+"No, and it looks quite deserted," agreed the young inventor. "Say, all
+the doors are open, too! He shouldn't go away and leave his house open
+like that--with the valuable platinum there."
+
+"Maybe he's asleep," suggested Ned.
+
+They knocked on the opened door, but there was no answer. Then they went
+inside. To their surprise the house was in confusion. Furniture was
+overturned, tables and chairs were broken, and papers were scattered
+about the room.
+
+"There's been a fight here!" cried Tom.
+
+"That's right," agreed Ned. "Maybe he's been hurt--maybe burglars came
+for the platinum!"
+
+"Come on!" cried Tom, making a dash for the stairs. "We'll see if he's
+here."
+
+The house was small, and it took but a moment to show that Mr. Petrofsky
+was not there. Upstairs, as below, was the same confusion--the
+overturned furniture and the papers scattered about.
+
+Tom stooped and picked up a scrap that looked like a piece torn from a
+letter. On top was a seal--the black seal of Russia--the imperial arms
+of the Czar!
+
+"Look!" cried Tom, holding out the paper.
+
+"What is it?" asked Ned.
+
+"The hand of the Czar!" answered his chum. "It has reached out from
+Russia, and taken Mr. Petrofsky away!"
+
+
+
+
+CHAPTER IV
+
+THE SEARCH
+
+
+For a moment Ned could scarcely understand what Tom meant. It scarcely
+seemed possible that such a thing could happen. That some one in far-off
+Russia--be it the Czar or one of the secret police--could operate from
+such a distance, seeking out a man in an obscure house in a little
+American village, and snatching him away.
+
+"It isn't possible!" declared Ned breathlessly.
+
+"What difference does that make?" asked Tom. "The thing has happened,
+and you can't get out of it. Look at all the evidence--there's been a
+fight, that's sure, and Mr. Petrofsky is gone."
+
+"But maybe he went away of his own accord," insisted Ned, who was
+sometimes hard to convince.
+
+"Nonsense! If a man went away of his own accord would he smash up his
+furniture, leave his papers scattered all about and go off leaving the
+doors and windows open for any one to walk in? I guess not."
+
+"Well, maybe you're right. But think of it! This isn't Russia!"
+
+"No, but he's a Russian subject, and, by his own confession an escaped
+exile. If he was arrested in the usual way he could be taken back, and
+our government couldn't interfere. He's been taken back all right. Poor
+man! Think of being doomed to those sulphur mines again, and as he
+escaped they'll probably make it all the harder for him!"
+
+"But I thought our government wouldn't help other nations to get back
+prisoners convicted of political crimes," suggested Ned. "That's all Mr.
+Petrofsky was guilty of--politics, trying to help the poor in his own
+country. It's a shame if our government stands for anything like that!"
+
+"That's just the point!" exclaimed Tom. Probably the spies, secret
+police, or whoever the Russian agents were, didn't ask any help from our
+government. If they did there might be a chance for him. But likely they
+worked in secret. They came here, sneaked in on him, and took him away
+before he could get help. Jove! If he could only have gotten word to me
+I'd have come in the airship, and then there'd be a different ending to
+this."
+
+"I guess you're right, Tom. Well, that ends it I suppose."
+
+"Ends what?"
+
+"Our trip to the platinum mine."
+
+"Not a bit of it. I'm going to have a hunt for it."
+
+"But how can you when Mr. Petrofsky can't go along to show us the way?
+Besides, we wanted to help rescue his brother, and now we can't."
+
+"Well, I'm going to make a big try," declared the young inventor firmly.
+"And the first thing I'm going to do is to get our friend out of the
+clutches of the Russian police."
+
+"You are? How?"
+
+"I'm going to make a search for him. Look here, Ned, he must have been
+taken away some time to-day--perhaps only a few hours ago--and they
+can't have gone far with him."
+
+"How do you make that out?" Ned wanted to know.
+
+"Well, I guess I'm detective enough for that," and Tom smiled. "Look
+here, the doors and windows are open. Now it rained last night, and
+there was quite a wind. If the windows had been open in the storm
+there'd be some traces of moisture in the rooms. But there isn't a drop.
+Consequently the windows have been opened since last night."
+
+"Say, that's so!" cried Ned admiringly.
+
+"But that's not all," went on Tom. "Here's a bottle of milk on the
+table, and it's fresh," which he proved by tasting it. "Now that was
+left by the milkman either late last night or early this morning. I
+don't believe it's over twelve hours old."
+
+"Well, what does this mean?" asked Ned, who couldn't quite follow Tom's
+line of reasoning.
+
+"To my mind it means that the spies were here no later than this
+morning. Look at the table upset, the dishes on the floor. Here's one
+with oatmeal in it, and you know how hard and firm cooked oatmeal gets
+after it stands a bit. This is quite fresh, and soft, and--"
+
+"And that means--" interrupted Ned, who was in turn interrupted by Tom,
+who exclaimed:
+
+"It means that Mr. Petrofsky was at breakfast when they burst in on him,
+and took him away. They had hard work overpowering him, I'll wager, for
+he could put up a pretty good fight. And the broken furniture is
+evidence of that. Then the spies, after tying him up, or putting him in
+a carriage, searched the house for incriminating papers. That's as plain
+as the nose on your face. Then the police agents, or whoever they were,
+skipped out in a hurry, not taking the trouble to close the windows and
+doors."
+
+"I believe it did happen that way," agreed Ned, who clearly saw what Tom
+meant. "But what can we do? How can we find him?"
+
+"By getting on the trail," answered his chum quickly. "There may be more
+clews in the house, and I'm sure there'll be some out of doors, for they
+must have left footprints or the marks of carriage wheels. We'll take a
+look, and then we'll get right on the search. I'm not going to let them
+take Mr. Petrofsky to Russia if I can help it. I want to get after that
+platinum, and he's the only one who can pilot us anywhere near the
+place; and besides, there's his brother we've got to rescue. We'll make
+a search for the exile."
+
+"I'm with you!" cried Ned. "Jove! Wouldn't it be great if we could
+rescue him? They can't have gotten very far with him."
+
+"I'm afraid they have quite a start on us," admitted Tom with a dubious
+shake of his head, "but as long as they're in the United States we have
+a chance. If ever they get him on Russian soil it's all up with him."
+
+"Come on then!" cried Ned. "Let's get busy. What's the first thing to
+do?"
+
+"Look for clews," replied Tom. "We'll begin at the top of the house and
+work down. It's lucky we came when we did, for every minute counts."
+
+Then the two plucky lads began their search for the kidnapped Russian
+exile. Had those who took him away seen the mere youths who thus devoted
+themselves to the task, they might have laughed in contempt, but those
+who know Tom Swift and his sturdy chum, know that two more resourceful
+and brave lads would be hard to find.
+
+
+
+
+CHAPTER V
+
+A CLEW FROM RUSSIA
+
+
+"Nothing much up here," remarked Tom, when he and Ned had gone all over
+the second floor twice. "That scrap of paper, which put me on to the
+fact that some one from the Russian government had been here, is about
+all. They must have taken all the documents Mr. Petrofsky had."
+
+"Maybe he didn't have any," suggested Ned.
+
+"If he was wise he'd get rid of them when he knew he was being shadowed,
+as he told us. Perhaps that was why they broke up the furniture,
+searching for hidden papers, or they may have done it out of spite
+because they didn't find anything. But we might as well go downstairs
+and look there."
+
+But the first floor was equally unproductive of clews, save those
+already noted, which showed, at least so Tom believed, that Mr.
+Petrofsky had been surprised and overpowered while at breakfast.
+
+"Now for outside!" cried the young inventor. "We'll see if we can figure
+out how they got him away."
+
+There were plenty of marks in the soft ground and turf, which was still
+damp from the night's rain, though it was now afternoon. Unfortunately,
+however, in approaching the house after leaving the aeroplane, Ned and
+Tom had not thought to exercise caution, and, not suspecting anything
+wrong, they had stepped on a number of footprints left by the
+kidnappers.
+
+But for all that, they saw enough to convince them that several men had
+been at the lonely house, for there were many marks of shoes. It was out
+of the question, however, to tell which were those of Mr. Petrofsky and
+which those of his captors.
+
+"They might have carried him out to a carriage they had in waiting,"
+suggested Ned. "Let's go out to the front gate and look in the road.
+They hardly would bring the carriage up to the door."
+
+"Good idea," commented Tom, and they hurried to the main thoroughfare
+that passed the Russian's house.
+
+"Here they are!" cried Ned, Who was in the lead. "There's been a
+carriage here as sure as you're a foot high and it's a rubber-tired one
+too."
+
+"GOOD!" cried Tom admiringly. "You're coming right along in your
+detective training. How do you make that out?"
+
+"See here, where a piece of rubber has been broken or cut out of the
+tire. It makes a peculiar mark in the dirt every time the wheel goes
+around."
+
+"That's right, and it will be a good thing to trace the carriage by.
+Come on, we'll keep right after it."
+
+"Hold on a bit," suggested Ned, who, though not so quick as Tom Swift,
+frequently produced good results by his very slowness. "Are you going
+off and leave the airship here for some one to walk off with?"
+
+"Guess they wouldn't take it far," replied the young inventor, "but I'd
+better make it safe. I'll disconnect it so they can't start it, though
+if Andy Foger happens to come along he might slash the planes just out
+of spite. But I guess he won't show up."
+
+Tom took a connecting pin out of the electrical apparatus, making it
+impossible to start the aeroplane, and then, wheeling it out of sight
+behind a small barn, he and Ned went back to the carriage marks in the
+road.
+
+"Hurry!" urged Tom, as he started off in the direction of the village of
+Hurdtown, near where the cottage stood. "We will ask people living along
+the highway if they've seen a carriage pass."
+
+"But what makes you think they went off that way?" asked Ned. "I should
+think they'd head away from the village, so as not to be seen."
+
+"No, I don't agree with you. But wait, we'll look at the marks. Maybe
+that will help us."
+
+Peering carefully at the marks of horses' hoofs and the wheel
+impressions, Tom uttered a cry of discovery.
+
+"I have it!" he declared. "The carriage came from the village, and kept
+right on the other way. You're right, Ned. They didn't go back to town.
+
+"Are you sure?"
+
+"Of course. You can see for yourself; if the carriage had turned around
+the track would show, but it doesn't and, even if they turned on the
+grass, there'd be two lines of marks--one coming out here and one
+returning. As it is there is only a single set--just as if the carriage
+drove up here, took on its load, and continued on. This way, Ned."
+
+They hurried down the road, and soon came to a cluster of farm houses.
+Inquiries there, however, failed to bring anything to light, for either
+the occupants of the house had failed to notice passing vehicles, or
+there had been so many that any particular carriage was not recalled.
+And there were now so many impressions in the soft dirt of the
+highway--so many wheel tracks and hoof imprints--that it was impossible
+to pick out those of the carriage with the cut rubber tire. "Well, I
+guess it isn't of much use to go on any farther," spoke Ned, when they
+had traveled several miles and had learned nothing.
+
+"We'll try one more house, and then go back," agreed Tom. "We'll tell
+dad about what's happened, and see what he says."
+
+"Carriage?" repeated an old farmer to whom they next put the question.
+"Wa'al, now, come t' think of it, I did see one drivin' along here early
+this morning. It had rubber tires on too, for I recollect remarkin' t'
+myself that it didn't make much noise. Had t' talk t' myself," he added
+in explanation, "'cause nobody else in the family was up, 'ceptin' th'
+dog."
+
+"Did the carriage have some Russians in it?" asked Tom eagerly, "and was
+one a big bearded man?"
+
+"Wa'al, now you've got me," admitted the farmer frankly. "It was quite
+early you see, and I didn't take no particular notice. I got up early t'
+do my milkin' 'cause I have t' take it t' th' cheese factory. That's th'
+reason nobody was up but me. But I see this carriage comin' down th'
+road, and thinks I t' myself it was pretty middlin' early fer anybody t'
+be takin' a pleasure ride. I 'lowed it were a pleasure ride, 'cause it
+were one of them hacks that folks don't usually use 'ceptin' fer a
+weddin', or a funeral, an' it wa'n't no funeral."
+
+"Then you can't tell us anything more except that it passed?" asked Ned.
+
+"No, I couldn't see inside, 'cause it was rather dark at that hour, and
+then, too, I noticed that they had th' window shades down."
+
+"That's suspicious!" exclaimed Tom. "I believe they are the fellows we
+re after," and, without giving any particulars he said that they were
+looking for a friend who might have been taken away against his will.
+
+"Could you tell where they were going?" asked Tom, scarcely hoping to
+get an affirmative answer.
+
+"Wa'al, th' man on th' seat pulled up when he see me," spoke the farmer
+with exasperating slowness, "an' asked me how far it was t' th'
+Waterville station, an' I told him."
+
+"Why didn't you say so at first?" asked Tom quickly. "Why didn't you
+tell us they were heading for the railroad?"
+
+"You didn't ask me," replied the farmer. "What difference does it make."
+
+"Every minute counts!" exclaimed the young inventor. "We want to keep
+right after those fellows. Maybe the agent can tell us where they bought
+tickets to, and we can trace them that way.
+
+"Shouldn't wonder," commented the farmer. There ain't many trains out
+from Waterville at that time of day, an' mighty few passengers.
+Shouldn't wonder but Jake Applesauer could put ye on th' trail."
+
+"Much obliged," called Tom. "Come on, Ned," and he started back in the
+direction of the house where the kidnapping had taken place.
+
+"That ain't th' way t' 'vaterville!" the farmer shouted after them.
+
+"I know it, we're going to get our airship," answered Tom, and then he
+heard the farmer mutter.
+
+"Plumb crazy! That's what they be! Plumb crazy! Going after their
+airship! Shouldn't wonder but they was escaped lunatics, and the other
+fellers was keepers after 'em. Hu! Wa'al, I've got my work to do.
+'Tain't none of my affair."
+
+"Let him think what he likes," commented Ned as he and his chum hurried
+on. "We're on the trail all right."
+
+If Jake Applesauer, the agent at the Waterville station, was surprised
+at seeing two youths drop down out of an aeroplane, and begin
+questioning him about some suspicious strangers that had taken the
+morning train, he did not show it. Jake prided himself on not being
+surprised at anything, except once when he took a counterfeit dollar in
+return for a ticket, and had to make it good to the company.
+
+But, to the despair of Tom and Ned, he could not help them much. He had
+seen the party, of course. They had driven up in the hack, and one of
+the men seemed to be sick, or hurt, for his head was done up in
+bandages, and the others had to half carry him on the train.
+
+"That was Mr. Petrofsky all right," declared Ned.
+
+"Sure," assented Tom. "They must have hurt and drugged him. But you
+can't tell us for what station they bought tickets, Mr. Applesauer?"
+
+"No, for they didn't buy any. They must have had 'em, or else they paid
+on the train. One man drove off in the coach, and that's all I know."
+
+As Tom and Ned started back to Shopton in the aeroplane they discussed
+what could be done next. A hard task lay before them, and they realized
+that.
+
+"They could have gotten off at any station between here and New York, or
+even changed to another railroad at the junction," spoke Tom. "It's
+going to be a hard job."
+
+"Guess we'll have to get some regular detectives on it," suggested Ned.
+
+"And that's what I'll do," declared the young inventor. "They may be
+able to locate Mr. Petrofsky before those spies take him out of this
+country. If they don't--it will be too late. I'm going to talk to dad
+about it, and if he agrees I'll hire the best private detectives."
+
+Mr. Swift gave his consent when Tom had told the story, and, a day
+later, one of the best detectives of a well known agency called on Tom
+in Shopton and assumed charge of the case.
+
+The early reports from the detective were quite reassuring. He got on
+the trail of the men who had taken Mr. Petrofsky away, and confirmed the
+suspicion that they were agents of the Russian police. He trailed them
+as far as New York, and there the clews came to an end.
+
+"Whether they are in the big city, which might easily be, or in some of
+the nearby towns, will take some time to learn," the detective wrote,
+and Tom wired back telling him to keep on searching.
+
+But, as several weeks went by, and no word came, even Tom began to give
+up hope, though he did not stop work on the air glider, which was
+nearing completion. And then, most unexpectedly a clew came--a clew from
+far-off Russia.
+
+Tom got a letter one day--a letter in a strange hand, the stamp and
+postmark showing that it had come from the land of the Czar.
+
+"What do you suppose it contains?" asked Ned, who was with his chum when
+the communication was received.
+
+"Haven't the least idea; but I'll soon find out."
+
+"Maybe it's from the Russian police, telling you to keep away from
+Siberia."
+
+"Maybe," answered Tom absently, for he was reading the missive. "I say!"
+he suddenly cried. "This is great! A clew at last, and from St.
+Petersburg! Listen to this, Ned!
+
+"This letter is from the head of one of the secret societies over there,
+a society that works against the government. It says that Mr. Petrofsky
+is being detained a prisoner in a lonely hut on the Atlantic sea coast,
+not far from New York--Sandy Hook the letter says--and here are the very
+directions how to get there!"
+
+"No!" cried Ned, in disbelief. "How in the world could anybody in Russia
+know that."
+
+"It tells here," said Tom. "It's all explained. As soon as the secret
+police got Mr. Petrofsky they communicated with the head officials in
+St. Petersburg. You know nearly everyone is a spy over there, and the
+letter says that Mr. Petrofsky's friends there soon heard the news, and
+even about the exact place where he is being held."
+
+"What are they holding him for?" asked Ned.
+
+"That's explained, too. It seems they can't legally take him back until
+certain papers are received from his former prison in Siberia, and those
+are now on the way. His friends write to me to hasten and rescue him."
+
+"But how did they ever get your address?"
+
+"That's easy, though you wouldn't think so. It seems, so the letter
+explains, that as soon as Mr. Petrofsky got acquainted with us he wrote
+to friends in St. Petersburg, giving my address, and telling them, in
+case anything ever happened to him, to notify us. You see he suspected
+that something might, after he found he was being shadowed that way.
+
+"And it all worked out. As soon as his friends heard that he was caught,
+and learned where he was being held, they wrote to me. Hurrah, Ned! A
+clew at last! Now to wire the detective--no, hold on, we'll go there and
+rescue him ourselves! We'll go in the airship, and pick up Detective
+Trivett in New York."
+
+"That's the stuff! I'm with you!"
+
+"Bless my suspender buttons! So am I, whatever it is!" cried Mr. Damon,
+entering the room at that moment.
+
+
+
+
+CHAPTER VI
+
+RESCUING MR. PETROFSKY
+
+
+"We ought to be somewhere near the place now, Tom."
+
+"I think we are, Ned. But you know I'm not going too close in this
+airship."
+
+"Bless my silk hat!" exclaimed Mr. Damon. "I hope we don't have to walk
+very far in such a deserted country as this, Tom Swift."
+
+"We'll have to walk a little way, Mr. Damon," replied the young
+inventor. "If I go too close to the hut they'll see the airship, and as
+those spies probably know that Mr. Petrofsky has been dealing with me,
+They'd smell a rat at once, and run away, taking him with them, and we'd
+have all our work to do over again."
+
+"That's right," agreed Detective Trivett, who was one of the four in the
+airship that was now hovering over the Atlantic coast, about ten miles
+below the summer resorts of which Asbury Park was one.
+
+It was only a few hours after Tom had received the letter from Russia
+informing him of the whereabouts of the kidnapped Russian, and he had
+acted at once.
+
+His father sanctioned the plan of going to the rescue in one of Tom's
+several airships and, Mr. Damon, having been on hand, at once agreed to
+go. Of course Ned went along, and they had picked up the private
+detective in New York, where he was vainly seeking a clew to the
+whereabouts of Mr. Petrofsky.
+
+Now the young inventor and his friends were hovering over the sandy
+stretch of coast that extends from Sandy Hook down the Atlantic
+seaboard. They were looking for a small fishing hamlet on the outskirts
+of which, so the Russian letter stated, was situated the lonely hut in
+which Mr. Petrofsky was held a prisoner.
+
+"Do you think you can pick it out from a distance, Tom?" asked Mr.
+Damon, as the airship floated slowly along. It was not the big one they
+intended taking on their trip to Siberia, but it was sufficiently large
+to accommodate the four and leave room for Mr. Petrofsky, should they
+succeed in rescuing him.
+
+"I think so," answered the young inventor.
+
+In the letter from Russia a comparatively accurate description of the
+prisoner's hut had been given, and also some details about his guards.
+For there is little goes on in political circles in the realm of the
+Czar that is not known either to the spies of the government or those of
+the opposition, and the latter had furnished Tom with reliable
+information.
+
+"That looks like the place," said Tom at length, when, after peering
+steadily through a powerful telescope, during which time Ned steered the
+ship, the young inventor "picked up" a fishing settlement. "There is the
+big fish house, spoken of in the letter," he went on, "and the Russians
+know a lot about fish. That house makes a good landmark. We'll go down
+now, before they have a chance to see us."
+
+The others thought this a good idea, and a little later the airship sank
+to the ground amid a lonely stretch of sand dunes, about two miles from
+the hamlet on the outskirts of which the prison hut was said to be
+located.
+
+"Now," said Tom, "we've got to decide on a plan of Campaign. It won't do
+for all of us to go to the hut and make the rescue. Some one has got to
+stay with the airship, to be ready to start it off as soon as we come
+back with Mr. Petrofsky--if we do come.
+
+"Then there's no use in me staying here," spoke Detective Trivett. "I
+don't know enough even to turn on the gasolene."
+
+"No, it's got to be Ned or me," said the young inventor.
+
+"I'll stay," volunteered Ned quickly, for though he would very much have
+liked to be in at the rescue, he realized that his place was in the
+airship, as Mr. Damon was not sufficiently familiar with the machinery
+to operate it.
+
+Accordingly, after looking to everything to see that it was in working
+order, Tom led the advance. It was just getting dusk, and they figured
+on getting to the hut after dark.
+
+"Have everything ready for a quick start," Tom said to Ned, "for we may
+come back running."
+
+"I will," was the prompt answer, and then, getting their bearings, the
+little party set off.
+
+They had to travel over a stretch of sandy waste that ran along the
+beach. Back in shore were a few scattered cottages, and not yet opened
+for the summer, and on the ocean side was the pounding surf. The hut, as
+Tom recalled the directions, lay just beyond a group of stunted hemlock
+trees that set a little way hack from the ocean, on a bluff overlooking
+the sea. It was not near any other building.
+
+Slowly, and avoiding going any nearer the other houses than they could
+help, the little party made its way. They had to depend on their own
+judgement now, for the minor details of the location of the hut could
+not be given in the letter from Russia. In fact the spies themselves, in
+writing to their head officers about the matter, had not described the
+location in detail.
+
+"That looks like it over there," said Tom at last, when they had gone
+about a mile and a half, and saw a lonely hut with a light burning in
+it.
+
+Cautiously they approached and, as they drew nearer, they saw that the
+light came through the window of a small hut.
+
+"Looks like the place," commented the detective.
+
+"We'll have a look," remarked Tom.
+
+He crept up so he could glance in the window, and no sooner had he
+peered in, than he motioned for the others to approach.
+
+Looking under a partly-drawn curtain, Mr. Damon and Mr. Trivett saw the
+Russian whom they sought. He was seated at a table, his head bowed on
+his hands, and in the room were three men. A rifle stood in one corner,
+near one of the guards.
+
+"They're taking no chances," whispered Mr. Damon. "What shall we do,
+Tom?"
+
+"It's three to three," replied the young inventor. "But if we can get
+him away without a fight, so much the better. I think I have it. I'll go
+up to the door, knock and make quite a racket, and demand admittance in
+the name of the Czar. That will startle them, and they may all three
+rush to answer. Mr. Damon, you and the detective will stay by the
+window. As soon as you see the men rush for the door, smash in the
+window with a piece of driftwood and call to Mr. Petrofsky to jump out
+that way. Then you can run with him toward the airship, and I'll follow.
+It may work."
+
+"I don't see why it wouldn't," declared the detective. "Go ahead, Tom.
+We're ready."
+
+Looking in once more, to make sure that the guards were not aware of the
+presence of the rescuing party, Tom went to the front door of the hut.
+It was a small building, evidently one used by fishermen.
+
+Tom knocked loudly on the portal, at the same time crying out in a voice
+that he strove to make as deep and menacing as possible:
+
+"Open! Open in the name of the Czar!"
+
+Looking through the window, ready to act on the instant, Mr. Damon and
+the detective saw the three guards spring to their feet. One remained
+near Mr. Petrofsky, who also leaped up.
+
+"Now!" called the detective to his companion. "Smash the window!"
+
+The next instant a big piece of driftwood crashed through the casement,
+just as the two men were hurrying to the front door to answer Tom's
+summons.
+
+"Mr. Petrofsky! This way!" yelled Mr. Damon, sticking his head in
+through the broken sash. "Come out! We've come to save you! Bless my
+putty blower, but this is great! Come on!"
+
+For a moment the exile stared at the head thrust through the broken
+window, and he listened to Tom's emphatic knocks and demands. Then with
+a cry of delight the Russian sprang for the open casement, while the
+guard that had remained near him made a leap to catch him, crying out:
+
+"Betrayed! Betrayed! It's the Nihilists! Look out, comrades!"
+
+
+
+
+CHAPTER VII
+
+THE AIR GLIDER
+
+
+Mr. Damon continued to hammer away at the window sash with the piece of
+driftwood. There were splinters of the frame and jagged pieces of glass
+sticking out, making it dangerous for the exile to slip through.
+
+"Come on! Come on!" the eccentric man continued to call. "Bless my
+safety valve! We'll save you! Come on!"
+
+Mr. Petrofsky was leaping across the room, just ahead of the one guard.
+The other two were at the open door now, through which Tom could be
+seen. Then the spies, realizing in an instant that they had been
+deceived, made a dash after their comrade, who had his hand on the tails
+of the exile's coat.
+
+"Break away! Break loose!" cried Mr. Damon, who, by this time had
+cleared the window so a person could get through. "Don't let them hold
+you!"
+
+"I don't intend to!" retorted Mr. Petrofsky, and he swerved suddenly,
+tearing his coat, from the grasp of the guard.
+
+In another instant the exile was at the casement, and was being helped
+through by Mr. Damon, and there was need of it, for the three guards
+were there now, doing their best to keep their prisoner.
+
+"Pull away! Pull away!" cried Mr. Damon.
+
+"We'll help you!" shouted Tom, who, now that his trick had worked, had
+sped around to the other side of the hut.
+
+"Don't be afraid, we're with you!" exclaimed the detective, who was with
+the young inventor.
+
+"Grab him! Keep him! Hold him!" fairly screamed the rearmost of the
+three guards. "It is a plot of the Nihilists to rescue him. Shoot him,
+comrades. He must not get away!"
+
+"Don't you try any of your shooting games, or I'll take a hand in it!"
+shouted the detective, and, at the same moment he drew his revolver and
+fired harmlessly in the air.
+
+"A bomb! A bomb!", yelled the guards in terror.
+
+"Not yet, but there may be!" murmured Tom. The firing of the shot
+produced a good effect, for the three men who were trying to detain Ivan
+Petrofsky at once fell back from the window and gave him just the chance
+needed. He scrambled through, with the aid of Mr. Damon, and before the
+guards could again spring at him, which they did when the echoes of the
+shot had died away. They had realized, too late, that it was not a bomb,
+and that there was no immediate danger for them.
+
+"Come on!" cried Tom. "Make for the airship! We've got to get the start
+of them!"
+
+Leading the way, he sprinted toward the road that led to the place where
+the airship awaited them. He was followed by Mr. Damon and the
+detective, who had Mr. Petrofsky between them.
+
+"Are you all right?" Tom called back to the exile. "Are you hurt? Can
+you run?"
+
+"I'm all right," was the reassuring answer. "Go ahead; But they'll be
+right after us."
+
+"Maybe they'll stop when they see this," remarked the detective
+significantly, and he held his revolver so that the rays of the
+newly-risen moon glinted on it.
+
+"Here they come!" cried Tom a moment later, as three figures, one after
+the other, came around the corner of the house. They had not taken the
+shorter route through the window, as had Mr. Petrofsky, and this gained
+a little time for our friends.
+
+"Stop! Hold on!" cried one of the guards in fairly good English. "That
+is our prisoner."
+
+"Not any more!" the young inventor yelled back. "He's ours now."
+
+"Look out! They're going to shoot!" cried Mr. Damon. "Bless my
+gunpowder! can't you stop them some way or other, Mr. Detective?"
+
+"The only way is by firing first," answered Mr. Trivett, "and I don't
+want to hurt them. Guess I'll fire in the air again."
+
+He did, and the guards halted. They seemed to be holding a consultation,
+as Tom learned by glancing hastily back, and he caught the glisten of
+some weapon. But if the three men had any notion of firing they gave it
+up, and once more came on running. Doubtless they had orders to get
+their prisoner back to Russia alive, and did not want to take any
+chances of hitting him.
+
+"Leg it!" cried Tom. "Leg it!"
+
+He was well ahead, and wanted the others to catch up to him, but none of
+the men was a good runner, and Mr. Petrofsky, by reason of being rather
+heavily built, was worse than the other two, so they had to accommodate
+their pace to his.
+
+"I wonder if we can make it," mused Tom, as he realized that the airship
+was a good distance off yet the guards, though quite a way in the rear
+now were coming on fast. "It's going to be a close race," thought the
+young inventor. "I wish we'd brought the airship a little nearer."
+
+It was indeed a race now, for the guards, seeming to know that they
+would not be shot at, were coming on more confidently, and were rapidly
+lessening the distance that separated them from their recent prisoner.
+
+"We've got to go faster!" cried Tom.
+
+"Bless my shoe leather!" yelled Mr. Damon. "I can't go any faster."
+
+Still he did make the attempt, and so did the exile and the detective.
+Little was said now, for each of the parties was running a dogged race,
+and in silence. They had gone possibly half a mile, and the first
+advantage of Tom and his friends was rapidly being lost, when suddenly
+there sounded in the air above a curious throbbing noise.
+
+"Bless my gasolene! What's that?" cried Mr. Damon.
+
+"The airship! It's the airship!" yelled Tom, as he saw a great dark
+shape slowly approaching. "Ned is bringing her to met us."
+
+"Good!" cried the detective. "We need it I'm about winded!"
+
+"This way, Ned! This way!" cried Tom, and, an instant later, they were
+in the midst of a brilliant glow, for Ned had turned the current into
+the great searchlight on the bow of the air craft, and the beams were
+focused on our friends. Ned could now see the refugees, and in a moment
+he sent the graceful craft down, bringing it to a halt on the ground
+near Tom.
+
+"In with you!" cried the lad. "She's all ready to start up again!"
+
+"Come on!" yelled Tom to the others. "We're all right now, if you
+hustle!"
+
+"Bless my pin cushion!" gasped Mr. Damon, making a final spurt.
+
+The three guards had halted in confusion on seeing the big, black bulk
+of the airship, and when they noted the gleaming of the searchlight they
+must have realized that their chances were gone. They made a rush,
+however, but it was too late. Over the side of the craft scrambled Tom,
+Mr. Damon, the detective and Ivan Petrofsky, and an instant later Ned
+had sent it aloft. The race was over, and the young inventor and his
+friends had won.
+
+"You're the stuff!" cried Tom to Ned, as he went with his chum to the
+pilot house to direct the progress of the airship. "It's lucky you came
+for us. We never could have made the distance. We left the ship too far
+off."
+
+"That's what I thought after you'd gone," replied his chum. "So I
+decided to come and meet you. I had to go slowly so as not to pass you
+in the darkness."
+
+They were speeding off now, and Ned, turning the beams of the great
+searchlight below them, picked up the three guards who were gazing
+helplessly aloft after their fast disappearing prisoner.
+
+"You're having your first ride in an airship, Mr. Petrofsky," remarked
+Tom, when they had gone on for some little distance. "How do you like
+it?"
+
+"I'm so excited I hardly know, but it's quite a sensation. But how in
+the world did you ever find me to rescue me?"
+
+Then they told the story of their search, and the unexpected clew from
+Russia. In turn the exile told how he had been attacked at the breakfast
+table one morning by the three spies--the very men who had been
+shadowing him--and taken away secretly, being drugged to prevent his
+calling for help. He had been kept a close prisoner in the lonely hut,
+and each day he had expected to be taken back to serve out his sentence
+in Siberia.
+
+"Another day would have been too late," he told Tom, when he had thanked
+the young inventor over and over again, "for the papers would have
+arrived, and the last obstacle to taking me back to Russia would have
+been removed. They dared not take me out of the United States without
+official documents, and they would have been forged ones, for they
+intended trumping up a criminal charge against me, the political one not
+being strong enough to allow them to extradite me."
+
+"Well I'm glad we got you," said Tom heartily. "We will soon be ready to
+start for Siberia."
+
+"In this kind of a craft?"
+
+"Yes, only much larger. You'll like it. I only hope my air glider
+works."
+
+By putting on speed, Tom was able to reach Shopton before midnight, and
+there was quite an informal celebration in the Swift homestead over the
+rescue of the exile. The detective, for whom there was no further need,
+was paid off, and Mr. Petrofsky was made a member of the household.
+
+"You'd better stay here until we are ready to start," Tom said, "and
+then we can keep an eye on you. We need you to show us as nearly as
+possible where the platinum field is."
+
+"All right," agreed the Russian with a laugh. "I'm sure I'll do all I
+can for you, and you are certainly treating me very nicely after what I
+suffered from my captors."
+
+Tom resumed work on his air glider the next day, and he had an
+additional helper, for Mr. Petrofsky proved to be a good mechanic.
+
+In brief, the air glider was like an aeroplane save that it had no
+motor. It was raised by a strong wind blowing against transverse planes,
+and once aloft was held there by the force of the air currents, just
+like a box kite is kept up. To make it progress either with or against
+the wind, there were horizontal and vertical rudders, and sliding
+weights, by which the equilibrium could be shifted so as to raise or
+lower it. While it could not exactly move directly against the wind it
+could progress in a direction contrary to which the gale was blowing,
+somewhat as a sailing ship "tacks."
+
+And, as has been explained, the harder the wind blew the better the air
+glider worked. In fact unless there was a strong gale it would not go
+up.
+
+"But it will be just what is needed out there in that part of Siberia,"
+declared the exile, "for there the wind is never quiet. Often it blows a
+regular hurricane."
+
+"That's what we want!" cried Tom. He had made several models of the air
+glider, changing them as he found out his errors, and at last he had hit
+on the right shape and size.
+
+Midway of the big glider, on which work was now well started, there was
+to be an enclosed car for the carrying of passengers, their food and
+supplies. Tom figured on carrying five or six.
+
+For several weeks the work on the air glider progressed rapidly, and it
+was nearing completion. Meanwhile nothing more had been heard or seen of
+the Russian spies.
+
+"Well," announced Tom one night, after a day's hard work, "we'll be
+ready for a trial now, just as soon as there comes a good wind."
+
+"Is it all finished?" asked Ned.
+
+"No, but enough for a trial spin. What I want is a big wind now."
+
+
+
+
+CHAPTER VIII
+
+IN A GREAT GALE
+
+
+There was a humming in the air. The telegraph wires that ran along on
+high poles past the house of Tom Swift sung a song like that of an
+Aeolian harp. The very house seemed to tremble.
+
+"Jove! This is a wind!" cried Tom as he awakened on a morning a few days
+after his air glider was nearly completed. "I never saw it so strong.
+This ought to be just what I want I must telephone to Mr. Damon and to
+Ned."
+
+He hustled into his clothes, pausing now and then to look out of his
+window and note the effects of the gale. It was a tremendous wind, as
+was evidenced by the limbs of several trees being broken off, while in
+some cases frail trees themselves had been snapped in twain.
+
+"Coffee ready, Mrs. Baggert?" asked our hero as he went downstairs. "I
+haven't got time to eat much though."
+
+In spite of his haste Tom ate a good breakfast and then, having
+telephoned to his two friends, and receiving their promises to come
+right over, our hero went out to make a few adjustments to his air
+glider, to get it in shape for the trial.
+
+He was a little worried lest the wind die out, but when he got outside
+he noted with satisfaction that the gale was stronger than at first. In
+fact it did considerable damage in Shopton, as Tom learned later.
+
+It certainly was a strong wind. An ordinary aeroplane never could have
+sailed in it, and Tom was doubtful of the ability of even his big
+airship to navigate in it. But he was not going to try that.
+
+"And maybe my air glider won't work," he remarked to himself as he was
+on his way to the shed where it had been constructed. "The models went
+up all right, but maybe the big one isn't proportioned right. However,
+I'll soon see."
+
+He was busy adjusting the balancing weights when Ned Newton came in.
+
+"Great Scott!" exclaimed the lad, as he labored to close the shed door,
+"this is a blow all right, Tom! Do you think it's safe to go up?"
+
+"I can't go up without a gale, Ned."
+
+"Well, I'd think twice about it myself."
+
+"Why, I counted on you going up with me."
+
+"Burr-r-r-r!" and Ned pretended to shiver. "I haven't an accident
+insurance policy you know."
+
+"You won't need it, Ned. If we get up at all we'll be all right. Catch
+hold there, and shift that rear weight a little forward on the rod. I
+expect Mr. Damon soon."
+
+The eccentric man came in a little later, just as Tom and Ned had
+finished adjusting the mechanism.
+
+"Bless my socks!" cried Mr. Damon. "Do you really mean to go up to-day,
+Tom?"
+
+"I sure do! Why, aren't you going with me?" and Tom winked at Ned.
+
+"Bless my--" began Mr. Damon, and then, evidently realizing that he was
+being tested he exclaimed: "Well, I will go, Tom! If the air glider is
+any good it ought to hold me. I will go up."
+
+"Now, Ned, how about you?" asked the young inventor.
+
+"Well, I guess it's up to me to come along, but I sure do wish it was
+over with," and Ned glanced out of the window to see if the gale was
+dying out. But the wind was as high as ever.
+
+It was hard work getting the air glider out of the shed, and in position
+on top of a hill, about a quarter of a mile away, for Tom intended
+"taking off" from the mound, as he could not get a running start without
+a motor. The wind, however, he hoped, would raise him and the strange
+craft.
+
+In order to get it over the ground without having it capsize, or elevate
+before they were ready for it, drag ropes, attached to bags of sand were
+used, and once these were attached the four found that they could not
+wheel the air glider along on its bicycle wheels.
+
+"We'll have to get Eradicate and his mule, I guess," said Tom, after a
+vain endeavor to make progress against the wind. "When it's up in the
+air it will be all right, but until then I'll need help to move it. Ned,
+call Rad, will you?"
+
+The colored man, with Boomerang, his faithful mule, was soon on hand.
+The animal was hitched to the glider, and pulled it toward the hill.
+
+"Now to see what happens," remarked Tom as he wheeled his latest
+invention around where the wind would take it as soon as the restraining
+ropes were cast off, for it was now held in place by several heavy
+cables fastened to stakes driven in the ground.
+
+Tom gave a last careful look to the weights, planes and rudders. He
+glanced at a small anemometer or wind gage, on the craft, and noted that
+it registered sixty miles an hour.
+
+"That ought to do," he remarked. "Now who's going up with me? Will you
+take a chance, Mr. Petrofsky?"
+
+"I'd rather not--at first."
+
+"Come on then, Ned and Mr. Damon. Mr. Petrofsky and Rad can cast off the
+ropes."
+
+The wind, if anything, was stronger than ever. It was a terrific gale,
+and just what was needed. But how would the air glider act? That was
+what Tom wanted very much to know.
+
+"Cast off!" he cried to the Russian and Eradicate, and they slipped the
+ropes.
+
+The next moment, with a rush and whizzing roar, the air glider shot
+aloft on the wings of the wind.
+
+
+
+
+CHAPTER IX
+
+THE SPIES
+
+
+"We're certainly going up!" yelled Ned, as he sat beside Tom in the
+cabin of the air glider.
+
+"That's right!" agreed the young inventor rather proudly, as he grasped
+two levers, one of which steered the craft, the other being used to
+shift the weights. "We're going up. I was pretty sure of that. The next
+thing is to see if it will remain stationary in the air, and answer the
+rudder."
+
+"Bless my top knot!" cried Mr. Damon. "You don't mean to tell me you can
+stand still in a gale of wind, Tom Swift."
+
+"That's exactly what I do mean. You can't do it in an aeroplane, for
+that depends on motion to keep itself up in the air. But the glider is
+different. That's one of its specialties, remaining still, and that's
+why it will be valuable if we ever get to Siberia. We can hover over a
+certain spot in a gale of wind, and search about below with telescopes
+for a sign of the lost platinum mine.
+
+"How high are you going up?" demanded Ned, for the air glider was still
+mounting upward on a slant. If you' ever scaled a flat piece of tin, or
+a stone, you'll remember how it seems to slide up a hill of air, when it
+was thrown at the right angle. It was just this way with the air
+glider--it was mounting upward on a slant.
+
+"I'm going up a couple of hundred feet at least," answered Tom, "and
+higher if the gale-strata is there. I want to give it a good test while
+I'm at it."
+
+Ned looked down through a heavy plate of glass in the floor of the
+cabin, and could see Mr. Petrofsky and Eradicate looking up at them.
+
+"Bless my handkerchief!" cried Mr. Damon, when his attention had been
+called to this. "It's just like an airship."
+
+"Except that we haven't a bit of machinery on board," said Tom. "These
+weights do everything," and he shifted them forward on the sliding rods,
+with the effect that the air glider dipped down with a startling lurch.
+
+"We're falling!" cried Ned.
+
+"Not a bit of it," answered Tom. "I only showed you how it worked. By
+sliding the weights back we go up."
+
+He demonstrated this at once, sending his craft sliding up another hill
+of air, until it reached an elevation of four hundred feet, as evidenced
+by the barograph.
+
+"I guess this is high enough," remarked Tom after a bit. "Now to see if
+she'll stand still."
+
+Slowly he moved the weights along, by means of the compound levers,
+until the air glider was on an "even keel" so to speak. It was still
+moving forward, with the wind now, for Tom had warped his wing tips.
+
+"The thing to do," said the young inventor, "is to get it exactly
+parallel with the wind-strata, so that the gale will blow through the
+two sets of planes, just as the wind blows through a box kite. Only we
+have no string to hold us from moving. We have to depend on the
+equalization of friction on the surfaces of the wings. I wonder if I can
+do it."
+
+It was a delicate operation, and Tom had not had much experience in that
+sort of thing, for his other airships and aeroplanes worked on an
+entirely different principle. But he moved the weights along, inch by
+inch, and flexed the tips, planes and rudders until finally Ned, who was
+looking down through the floor window, cried out:
+
+"We're stationary!"
+
+"Good!" exclaimed Tom. "Then it's a success."
+
+"And we can go to Siberia?" added Mr. Damon.
+
+"Sure," assented the young inventor. "And if we have luck we'll rescue
+Mr. Petrofsky's brother, and get a lot of platinum that will be more
+valuable than gold."
+
+It would not be true to say that the air glider was absolutely
+stationary. There was a slight forward motion, due to the fact that it
+was not yet perfected, and also because Tom was not expert enough in
+handling it.
+
+The friction on the plane surfaces was not equalized, and the gale
+forced the craft along slightly. But, compared to the terrific power of
+the wind, the air glider was practically at a standstill, and this was
+remarkable when one considers the force of the hurricane that was
+blowing above below and through it.
+
+For actually that was what the hurricane was doing. It was as if an
+immense box kite was suspended in the air, without a string to hold it
+from moving, and as though a cabin was placed amidships to hold human
+beings.
+
+"This sure is great!" cried Ned. "Have you got her in control, Tom?"
+
+"I think so. I'll try and see how she works."
+
+By shifting the weights, changing the balance, and warping the wings,
+the young inventor sent the craft higher up, made it dip down almost to
+the earth, and then swoop upward like some great bird. Then he turned it
+completely about and though he developed no great speed in this test
+made it progress quarteringly against the wind,
+
+"It's almost perfect," declared Tom. "A few touches and she'll be all
+right."
+
+"Is it all right?" asked Ivan Petrofsky anxiously, as the three left the
+cabin, and Eradicate hitched his mule to the glider to take it back to
+the shed.
+
+"I see where it can be improved," he said, as they made ready to
+descend. "I'll soon have it in shape."
+
+"Then we can go to Siberia?"
+
+"In less than a month. The big airship needs some repairs, and then
+we'll be off."
+
+The Russian said nothing, but he looked his thanks to Tom, and the
+manner in which he grasped the hand of our hero showed his deep
+feelings.
+
+The glider was given several more trials, and each time it worked
+better. Tom decided to change some of the weights, and he devoted all
+his time to this alteration, while Ned, Mr. Damon, and the others
+labored to get the big airship in shape for the long trip to the land of
+the exiles.
+
+So anxious was Tom to get started, that he put in several nights working
+on the glider. Ned occasionally came over to help him, while Mr. Damon
+was on hand as often as his wife would allow. Mr. Petrofsky spent his
+nights writing to friends in Russia, hoping to get some clew as to the
+whereabouts of his brother.
+
+It was on one of these nights, when Tom and Ned were laboring hard, with
+Eradicate to help them that an incident occurred which worried them all
+not a little. Tom was adjusting some of the new weights on the sliding
+rods, and called to Ned:
+
+"I say, old man, hand me that big monkey wrench, will you. I can't
+loosen this nut with the small one. You'll find it on the bench by that
+back window."
+
+As Ned went to get the tool he looked from the casement. He started,
+stood staring through the glass for a moment into the outer darkness,
+and then cried out:
+
+"Tom, we're being watched! There are some spies outside!"
+
+"What?" exclaimed the young inventor "Where are they? Who are they?"
+
+"I don't know. Those Russian police, maybe out front, and maybe we can
+catch them!"
+
+Grabbing up the big monkey wrench, Ned made a dash for the large sliding
+doors, followed by Tom who had an iron bar, and Eradicate with a small
+pair of pliers.
+
+"By golly!" cried the colored man, "ef I gits 'em I'll pinch dere noses
+off!"
+
+
+
+
+CHAPTER X
+
+OFF IN THE AIRSHIP
+
+
+Going from the brightly lighted shop into the darkness of the night,
+illuminated as it was only by the stars, neither Tom, Ned, nor
+Eradicate, could see anything at first. They had to stand still for a
+moment to accustom their eyes to the gloom.
+
+"Can you see them?" cried Tom to his chum.
+
+"No, but I can hear them! Over this way!" yelled Ned, and then, being
+able to dimly make out objects, so he would not run into them, he
+started off, followed by the young inventor.
+
+Tom could hear several persons running away now, but he could see no
+one, and from the sound he judged that the spies, if such they were,
+were hurrying across the fields that surrounded the shop.
+
+It was almost a hopeless task to pursue them, but the two lads were not
+the kind that give up. They rushed forward, hoping to be able to grapple
+with those who had looked in the shop window, but it was not to be.
+
+The sound of the retreating footsteps became more and more faint, until
+finally they gave no clew to follow.
+
+"Better stop," advised Tom. "No telling where we'll end up if we keep on
+running. Besides it might be dangerous."
+
+"Dangerous; how?" panted Ned.
+
+"They might dodge around, and wait for us behind some tree or bush."
+
+"An' ef dat Foger feller am around he jest as soon as not fetch one ob
+us a whack in de head," commented Eradicate grimly.
+
+"Guess you're about right," admitted Ned. "There isn't much use keeping
+on. We'll go back."
+
+"What sort of fellows were they?" asked Tom, when, after a little
+further search, the hunt was given up. "Could you see them well, Ned?"
+
+"Not very good. Just as I went to get you that wrench I noticed two
+faces looking in the window. I must have taken them by surprise, for
+they dodged down in an instant. Then I yelled, and they ran off."
+
+"Did you see Andy Foger?"
+
+"No, I didn't notice him."
+
+"Was either of them one of the spies who had Mr. Petrofsky in the hut?"
+
+"I didn't see those fellows very well, you remember, so I couldn't say."
+
+"That's so, but I'll bet that's who they were."
+
+"What do you think they're after, Tom?"
+
+"One of two things. They either want to get our Russian friend into
+their clutches again, or they're after me--to try to stop me from going
+to Siberia."
+
+"Do you think they'd go to such length as that?"
+
+"I'm almost sure they would. Those Russian police are wrong, of course,
+but they think Mr. Petrofsky is an Anarchist or something like that, and
+they think they're justified in doing anything to get him back to the
+Siberian mines. And once the Russian government sets out to do a thing
+it generally does it--I'll give 'em credit for that."
+
+"But how do you suppose they know you're going to Russia?"
+
+"Say, those fellows have ways of getting information you and I would
+never dream of. Why, didn't you read the other day how some fellow who
+was supposed to be one of the worst Anarchists ever, high up in making
+bombs, plotting, and all that sort of thing--turned out to be a police
+spy? They get their information that way. I shouldn't be surprised but
+what some of the very people whom Mr. Petrofsky thinks are his friends
+are spies, and they send word to headquarters of every move he makes."
+
+"Why don't you warn him?"
+
+"He knows it as well as I do. The trouble is you can't tell who the
+spies are until it's too late. I'm glad I'm not mixed up in that sort of
+thing. If I can get to Siberia, help Mr. Petrofsky rescue his brother,
+and get hold of some of that platinum I'll be satisfied. Then I won't go
+back to the land of the Czar, once I get away from there."
+
+"That's right. Well, let's go back and work on the glider."
+
+"And we'll have Eradicate patrolling about the shop to make sure we're
+not spied on again."
+
+"By golly! Ef I sees any oh 'em, I suah will pinch 'em!" cried the
+colored man, as he clicked the pliers.
+
+But there was no further disturbance that night, and, when Tom and Ned
+ceased work, they had made good progress toward finishing the air
+glider.
+
+The big airship was almost ready to be given a trial flight, with her
+motors tuned up to give more power, and as soon as the Russian exile had
+a little more definite information as to the possible whereabouts of his
+brother, they could start.
+
+In the days that followed Tom and his friends worked hard. The air
+glider was made as nearly perfect as any machine is, and in a fairly
+stiff gale, that blew up about a week later, Tom did some things in it
+that made his friends open their eyes. The young inventor had it under
+nearly as good control as he had his dirigible balloons or aeroplanes.
+
+The big airship, too, was made ready for the long voyage, extra large
+storage tanks for gasolene being built in, as it was doubtful if they
+could get a supply in Siberia without arranging for it in advance, and
+this they did not want to do. Besides there was the long ocean flight to
+provide for.
+
+"But if worst comes to worst I can burn kerosene in my motor," Tom
+explained, for he had perfected an attachment to this end. "You can get
+kerosene almost anywhere in Russia."
+
+At last word was received from Russia, from some Revolutionist friends
+of the exile, stating that his brother was supposed to be working in a
+certain sulphur mine north of the Iablonnoi mountains, and half way
+between that range and the city of Iakutsk.
+
+"But it might be a salt mine, just as well," said Mr. Petrofsky, when he
+told the boys the news. "Information about the poor exiles is hard to
+get"
+
+"Well, we'll take a chance!" cried Tom determinedly.
+
+The preparations went on, and by strict watchfulness none of the spies
+secured admission to the shop where the air glider was being finished.
+The big airship was gotten in shape for the voyage, and then, after a
+final trial of the glider, it was taken apart and put aboard the Falcon,
+ready for use on the gale-swept plains of Siberia.
+
+The last of the stores, provisions and supplies were put in the big car
+of the airship, a route had been carefully mapped out, and Tom, after
+saying good-bye to Mary Nestor, his father, the housekeeper, and
+Eradicate, took his place in the pilot house of the airship one pleasant
+morning at the beginning of Summer.
+
+"Don't you wish you were going, Rad?" the young inventor asked, for the
+colored man had decided to stay at home.
+
+"No indeedy, Massa Tom," was the answer. "Dat's a mighty cold country in
+Shebeara, an' I laik warm wedder."
+
+"Well, take care of yourself and Boomerang," answered Tom with a laugh.
+Then he pulled the lever that sent a supply of gas into the big bag, and
+the ship began to rise.
+
+"I guess we've given those spies the slip," remarked Ned, as they rose
+from the ground calling good-byes to the friends they left behind.
+
+"I hope so," agreed Tom, but could he have seen two men, of sinister
+looks, peering at the slowly-moving airship from the shelter of a glove
+of trees, not far off, he might have changed his opinion, and so would
+Ned.
+
+Then, as the airship gathered momentum, it fairly sprang into the air,
+and a moment later, the big propellers began revolving. They were off on
+their long voyage to find the lost platinum mine, and rescue the exile
+of Siberia.
+
+
+
+
+CHAPTER XI
+
+A STORM AT SEA
+
+
+Tom had the choice of two routes in making his voyage to far-off
+Siberia. He could have crossed the United States, sailed over the
+Pacific ocean, and approached the land of the Czar from the western
+coast above Manchuria. But he preferred to take the Atlantic route,
+crossing Europe, and so sailing over Russia proper to get to his
+destination. There were several reasons for this.
+
+The water voyage was somewhat shorter, and this was an important
+consideration when there was no telling when he might have an accident
+that would compel him to descend. On the Atlantic he knew there would be
+more ships to render assistance if it was needed, although he hoped he
+would not have to ask for it.
+
+"Then, too," he said to Ned, when they were discussing the matter, "we
+will have a chance to see some civilized countries if we cross Europe,
+and we may land near Paris."
+
+"Paris!" cried Ned. "What for?"
+
+"To renew our supply of gasolene, for one thing," replied the young
+inventor. "Not that we will be out when we arrive, but if we take on
+more there we may not have to get any in Russia. Besides, they have a
+very good quality in France, so all told, I think the route over Europe
+to be the best."
+
+Ned agreed with him, and so did Mr. Petrofsky. As for Mr. Damon, he was
+so busy getting his sleeping room in order, and blessing everything he
+could think of, that he did not have time to talk much. So the eastern
+route was decided on, and as the big airship, carrying our friends,
+their supplies, and the wonderful air glider rose higher and higher, Tom
+gradually brought her around so that the pointed nose of the gas bag
+aimed straight across the Atlantic.
+
+They were over the ocean on the second day out, for Tom did not push the
+craft to her limit of speed, now they had time to consider matters at
+their leisure, for they had been rather hurried on leaving.
+
+The machinery was working as nearly to perfection as it could be
+brought, and Tom, after finding out that his craft would answer equally
+well as a dirigible balloon or an aeroplane, let it sail along as the
+latter.
+
+"For," he said, "we have a long trip ahead of us and we need to save
+all the elevating gas we can save. If worst comes to worst, and we can't
+navigate as an aeroplane any more, we can even drift along as a
+dirigible. But while we have the gasolene we might as well make speed
+and be an aeroplane."
+
+The others agreed with him, and so it was arranged. Tom, when he had
+seen to it that his craft was working well, let Ned take charge and
+devoted himself to seeing that all the stores and supplies were in order
+for quick use.
+
+Of course, until they were nearer the land of the Czar, and that part of
+Siberia where Mr. Petrofsky's brother was held as an exile, they could
+do little save make themselves as comfortable as possible in the
+airship. And this was not hard to do.
+
+Naturally, in a craft that had to carry a heavy load, and lift itself
+into the air, as well as propel itself along, not many things could be
+taken. Every ounce counted. Still our friends were not without their
+comforts. There was a well stocked kitchen, and Mr. Damon insisted on
+installing himself as cook. This had been Eradicate's work but the
+eccentric man knew how to do almost everything from making soup to
+roasting a chicken, and he liked it. So he was allowed free run of the
+galley.
+
+Tom and Ned spent much time in the steering tower or engine room, for,
+though all of the machinery was automatic, there was need of almost
+constant attention, though there was an arrangement whereby in case of
+emergency, the airship would steer herself in any set direction for a
+certain number of hours.
+
+There were ample sleeping quarters for six persons, a living room and a
+dining saloon. In short the Falcon was much like Tom's Red Cloud, only
+bigger and better. There was even a phonograph on board so that music,
+songs, and recitations could be enjoyed.
+
+"Bless my napkin! but this is great!" exclaimed Mr. Damon, about noon of
+the second day, when they had just finished dinner and looked down
+through the glass windows in the bottom of the cabin at the rolling
+ocean below them. "I don't believe many persons have such opportunities
+as we have."
+
+"I'm sure they do not," added Mr. Petrofsky. "I can hardly think it
+true, that I am on my way back to Siberia to rescue my dear brother."
+
+"And such good weather as we're having," spoke Ned. "I'm glad we didn't
+start off in a storm, for I don't exactly like them when we're over the
+water."
+
+"We may get one yet," said Tom. "I don't just like the way the barometer
+is acting. It's falling pretty fast."
+
+"Bless my mercury tube!" cried Mr. Damon. "I hope we have no bad luck on
+this trip."
+
+"Oh, we can't help a storm or two," answered Tom. "I guess it won't do
+any harm to prepare for it."
+
+So everything was made snug, and movable articles on the small exposed
+deck of the airship were lashed fast. Then, as night settled down, our
+friends gathered about in the cheerful cabin, in the light of the
+electric lamps, and talked of what lay before them.
+
+As Mr. Damon could steer as well as Tom or Ned, he shared in the night
+watch. But Mr. Petrofsky was not expert enough to accept this
+responsibility.
+
+It was when Mr. Damon finished his watch at midnight, and called Tom,
+that he remarked.
+
+"Bless my umbrella, Tom. But I don't like the looks of the weather."
+
+"Why, what's it doing?"
+
+"It isn't doing anything, but it's clouding up and the barometer is
+going down."
+
+"I was afraid we were in for it," answered the young inventor. "Well,
+we'll have to take what comes."
+
+The airship plunged on her way, while her young pilot looked at the
+various gages, noting that to hold her way against the wind that had
+risen he would have to increase the speed of the motor.
+
+"I don't like it," murmured Tom, "I don't like it," and he shook his
+head dubiously.
+
+With a suddenness that was almost terrifying, the storm broke over the
+ocean about three o'clock that morning. There was a terrific clap of
+thunder, a flash of lighting, and a deluge of rain that fairly made the
+staunch Falcon stagger, high in the air as she was.
+
+"Come on, Ned!" cried Tom, as he pressed the electric alarm bell
+connected with his chum's berth. "I need you, and Mr. Damon, too."
+
+"What's the matter?" cried Ned, awakened suddenly from a sound sleep.
+
+"We're in a bad storm," answered Tom, "and I'll have to have help. We
+need more gas, to try and rise above it."
+
+"Bless my hanging lamp!" cried Mr. Damon, "I hope nothing happens!"
+
+And he jumped from his berth as the Falcon plunged and staggered through
+the storm that was lashing the ocean below her into white billow of
+foam.
+
+
+
+
+CHAPTER XII
+
+AN ACCIDENT
+
+
+For a few moments it seemed as if the Falcon would surely turn turtle
+and plunge into the seething ocean. The storm had burst with such
+suddenness that Tom, who was piloting his air craft, was taken unawares.
+He had not been using much power or the airship would have been better
+able to weather the blast that burst with such fury over her. But as it
+was, merely drifting along, she was almost like a great sheet of paper.
+Down she was forced, until the high-flying spray from the waves actually
+wet the lower part of the car, and Ned, looking through one of the glass
+windows, saw, in the darkness, the phosphorescent gleam of the water so
+near to them.
+
+"Tom!" he cried in alarm. "We're sinking!"
+
+"Bless my bath sponge! Don't say that!" gasped Mr. Damon.
+
+"That's why I called you," yelled the young inventor. "We've got to rise
+above the storm if possible. Go to the gas machine, Ned, and turn it on
+full strength. I'll speed up the motor, and we may be able to cut up
+that way. But get the gas on as soon as you can. The bag is only about
+half full. Force in all you can!
+
+"Mr. Damon, can you take the wheel? It doesn't make any difference which
+way we go as long as you keep her before the wind, and yank back the
+elevating rudder as far as she'll go! We must head up."
+
+"All right, Tom," answered the eccentric man, as he fairly jumped to
+take the place of the young inventor at the helm.
+
+"Can I do anything?" asked the Russian, as Tom raced for the engine
+room, to speed the motor up to the last notch.
+
+"I guess not. Everything is covered, unless you want to help Mr. Damon.
+In this blow it will be hard to work the rudder levers."
+
+"All right," replied Ivan Petrofsky, and then there came another
+sickening roll of the airship, that threatened to turn her completely
+over.
+
+"Lively!" yelled Tom, clinging to various supports as he made his way to
+the engine room. "Lively, all hands, or we'll be awash in another
+minute!"
+
+And indeed it seemed that this might be so, for with the wind forcing
+her down, and the hungry waves leaping up, as if to clutch her to
+themselves, the Falcon was having anything but an easy time of it.
+
+It was the work of but an instant however, when Tom reached the engine
+room, to jerk the accelerator lever toward him, and the motor responded
+at once. With a low, humming whine the wheels and gears redoubled their
+speed, and the great propellers beat the air with fiercer strokes.
+
+At the same time Tom heard the hiss of the gas as it rushed into the
+envelope from the generating machine, as Ned opened the release valve.
+
+"Now we ought to go up," the young inventor murmured, as he anxiously
+watched the barograph, and noted the position of the swinging pendulum
+which told of the roll and dip of the air craft.
+
+For a moment she hung in the balance, neither the increased speed of the
+propellers, nor the force of the gas having any seeming effect. Mr.
+Damon and the Russian, clinging to the rudder levers, to avoid being
+dashed against the sides of the pilot house, held them as far back as
+they could, to gain the full power of the elevation planes. But even
+this seemed to do no good.
+
+The power of the gale was such, that, even with the motor and gas
+machine working to their limit, the Falcon only held her own. She swept
+along, barely missing the crests of the giant waves.
+
+"She's got to go up! She's got to go up!" cried Tom desperately, as if
+by very will power he could send her aloft. And then, when there came a
+lull in the fierce blowing of the wind, the elevation rudder took hold,
+and like a bird that sees the danger below, and flies toward the clouds,
+the airship shot up suddenly.
+
+"That's it!" cried Tom in relief, as he noted the needle of the
+barograph swinging over, indicating an ever-increasing height. "Now
+we're safe."
+
+They were not quite yet, but at last the power of machinery had
+prevailed over that of the elements. Through the pelting rain, and amid
+the glare of the lightning, and the thunder of heaven's artillery, the
+airship forced her way, up and up and up.
+
+Setting the motor controller to give the maximum power until he released
+it, Tom hastened to the gas-generating apparatus. He found Ned attending
+to it, so that it was now working satisfactorily.
+
+"How about it, Tom?" cried his chum anxiously.
+
+"All right now, Ned, but it was a close shave! I thought we were done
+for, platinum mine, rescue of exiles, and all."
+
+"So did I. Shall I keep on with the gas?"
+
+"Yes, until the indicator shows that the bag is full. I'm going to the
+pilot house."
+
+Running there, Tom found that Mr. Damon and the Russian had about all
+they could manage. The young inventor helped them and then, when the
+Falcon was well started on her upward course, Tom set the automatic
+steering machine, and they had a breathing spell.
+
+To get above the sweep of the blast was no easy task, for the wind
+strata seemed to be several miles high, and Tom did not want to risk an
+accident by going to such an elevation. So, when having gone up about a
+mile, he found a comparatively calm area he held to that, and the Falcon
+sped along with the occupants feeling fairly comfortable, for there was
+no longer that rolling and tumbling motion.
+
+The storm kept up all night, but the danger was practically over, unless
+something should happen to the machinery, and Tom and Ned kept careful
+watch to prevent this. In the morning they could look down on the
+storm-swept ocean below them, and there was a feeling of thankfulness in
+their hearts that they were not engulfed in it.
+
+"This is a pretty hard initiation for an amateur," remarked Mr.
+Petrofsky. "I never imagined I should be as brave as this in an airship
+in a storm."
+
+"Oh, you can get used to almost anything," commented Mr. Damon.
+
+It was three days before the storm blew itself out and then came
+pleasant weather, during which the Falcon flew rapidly along. Our
+friends busied themselves about many things, talked of what lay before
+them, and made such plans as they could.
+
+It was the evening of the fifth day, and they expected to sight the
+coast of France in the morning. Tom was in the pilot house, setting the
+course for the night run, and Ned had gone to the engine room to look
+after the oiling of the motor.
+
+Hardly had he reached the compartment than there was a loud report, a
+brilliant flash of fire, and the machinery stopped dead.
+
+"What is it?" cried Tom, as he came in on the run, for the indicators in
+the pilot house had told him something was wrong.
+
+"An accident!" cried Ned. "A breakdown, Tom! What shall we do?"
+
+
+
+
+CHAPTER XIII
+
+SEEKING A QUARREL
+
+
+There was an ominous silence in the engine room, following the flash and
+the report. The young inventor took in every bit of machinery in a quick
+glance, and he saw at once that the main dynamo and magneto had
+short-circuited, and gone out of commission. Almost instantly the
+airship began to sink, for the propellers had ceased revolving.
+
+"Bless my barograph!" cried Mr. Damon, appearing on the scene. "We're
+sinking, Tom!"
+
+"It's all right," answered our hero calmly. "It's a bad accident, and
+may delay us, but there's no danger. Ned, start up the gas machine," for
+they were progressing as an aeroplane then. "Start that up, and we'll
+drift along as a dirigible."
+
+"Of course! Why didn't I think of that!" exclaimed Ned, somewhat
+provoked at his own want of thought. The airship was going down rapidly,
+but it was the work of but a moment to start the generator, and then the
+earthward motion was checked.
+
+"We'll have to take our chance of being blown to France," remarked Tom,
+as he went over to look at the broken electrical machinery. "But we
+ought to fetch the coast by morning with this wind. Lucky it's blowing
+our way."
+
+"Then you can't use the propellers?" asked Mr. Petrofsky.
+
+"No," replied Tom, "but if we get to France I can easily repair this
+break. It's the platinum bearings again. I do hope we'll locate that
+lost mine, for I need a supply of good reliable metal.
+
+"Then we'll have to land in France?" asked the Russian, and he seemed a
+trifle uneasy.
+
+"Yes," answered Tom. "Don't you want to?"
+
+"Well, I was thinking of our safety."
+
+"Bless my silk hat!" cried Mr. Damon. "Where is the danger of landing
+there? I rather hoped we could spend some time in Paris."
+
+"There is no particular danger, unless it be comes known that I am an
+escaped exile, and that we are on our way to Siberia to rescue another
+one, and try to find the platinum mine. Then we would be in danger."
+
+"But how are they to know it?" asked Ned, who had come back from the gas
+machine.
+
+"France, especially in Paris and the larger cities, is a hot-bed of
+political spies," answered Mr. Petrofsky. Russia has many there on the
+secret police, and while the objectors to the Czar's government are also
+there, they could do little to help us."
+
+"I guess they won't find out about us unless we give it away," was Tom's
+opinion.
+
+"I'm afraid they will," was the reply of the Russian. "Undoubtedly word
+has been cabled by the spies who annoyed us in Shopton, that we are on
+our way over here. Of course they can't tell where we might land, but as
+soon as we do land the news will be flashed all over, and the word will
+come back that we are enemies of Russia. You can guess the rest."
+
+"Then let's go somewhere else," suggested Mr. Damon.
+
+"It would be the same anywhere in Europe," replied Ivan Petrofsky.
+"There are spies in all the large centres."
+
+"Well, I've got to go to Paris, or some large city to get the parts I
+need," said Tom. "Unfortunately I didn't bring any along for the dynamo
+and magneto, as I should have done, and I can't get the necessary pieces
+in a small town. I'll have to depend on some big machine shop. But we
+might land in some little-frequented place, and I could go in to town
+alone."
+
+"That might answer," spoke the Russian, and it was decided to try that.
+
+Meanwhile it was somewhat doubtful whether they would reach France, for
+they were dependent on the wind. But it seemed to be blowing steadily in
+the desired direction, and Tom noted with satisfaction that their
+progress was comparatively fast. He tried to repair the broken machinery
+but found that he could not, though he spent much of the night over it.
+
+"Hurrah!" cried Ned when morning came, and he had taken an observation.
+"There's some kind of land over there."
+
+The wind freshened while they were at breakfast and using more gas so as
+to raise them higher Tom directed the course of his airship as best he
+could. He wanted to get high enough so that if they passed over a city
+they would not be observed.
+
+At noon it could be seen through the glass that they were over the
+outskirts of some large place, and after the Russian had taken an
+observation he exclaimed:
+
+"The environs of Paris! We must not land there!"
+
+"We won't, if the wind holds out," remarked Tom and this good fortune
+came to them. They succeeded in landing in a field not far from a small
+village, and though several farmers wondered much as the sight of the
+big airship, it was thought by the platinum-seekers that they would be
+comparatively safe.
+
+"Now to get the first train for Paris and get the things I need,"
+exclaimed Tom. He set to work taking off the broken pieces that they
+might be duplicated, and then, having inquired at an inn for the nearest
+railroad station, and having hired a rig, the young inventor set off.
+
+"Can you speak French?" asked Mr. Petrofsky. "If not I might be of
+service, but if I go to Paris I might be."
+
+"Never mind," interrupted Tom. "I guess I can parley enough to get along
+with."
+
+He had a small knowledge of the tongue, and with that, and knowing that
+English was spoken in many places, he felt that he could make out. And
+indeed he had no trouble. He easily found his way about the gay capital,
+and located a machine shop where a specialty was made of parts for
+automobile and airship motors. The proprietor, knowing the broken pieces
+belonged to an aeroplane, questioned Tom about his craft but the young
+inventor knew better than to give any clew that might make trouble, so
+he returned evasive answers.
+
+It was nearly night when he got back to the place where he had left the
+Falcon, and he found a curious crowd of rustics grouped about it.
+
+"Has anything happened?" he asked of his friends.
+
+"No, everything is quiet, I'm glad to say," replied Mr. Petrofsky. "I
+don't think our presence will create stir enough so that the news of it
+will reach the spies in Paris. Still I will feel easier when we're in
+the air again."
+
+"It will take a day to make the repairs," said Tom, "and put in the new
+pieces of platinum. But I'll work as fast as I can."
+
+He and Ned labored far into the night, and were at it again the next
+morning. Mr. Damon and the Russian were of no service for they did not
+understand the machinery well enough. It was while Tom was outside the
+craft, filing a piece of platinum in an improvised vise, that a
+poorly-clothed man sauntered up and watched him curiously. Tom glanced
+at him, and was at once struck by a difference between the man's attire
+and his person.
+
+For, though he was tattered and torn, the man's face showed a certain
+refinement, and his hands were not those of a farmer or laborer in which
+character he obviously posed.
+
+"Monsieur has a fine airship there," he remarked to Tom.
+
+"Oh, yes, it'll do." Tom did not want to encourage conversation.
+
+"Doubtless from America it comes?"
+
+The man spoke English but with an accent, and certain peculiarities.
+
+"Maybe so," replied the young inventor.
+
+"Is it permit to inspect the interior?"
+
+"No, it isn't," came from Tom shortly. He had hurt his finger with the
+file, and he was not in the best of humor.
+
+"Ah, there are secrets then?" persisted the stranger.
+
+"Yes!" said Tom shortly. "I wish you wouldn't bother me. I'm busy, can't
+you see."
+
+"Ah, does monsieur mean that I have poor eyesight?"
+
+The question was snapped out so suddenly, and with such a menacing tone
+that Tom glanced up quickly. He was surprised at the look in the man's
+eyes.
+
+"Just as you choose to take it," was the cool answer. "I don't know
+anything about your eyes, but I know I've got work to do."
+
+"Monsieur is insulting!" rasped out the seeming farmer. "He is not
+polite. He is not a Frenchman."
+
+"Now that'll do!" cried Tom, thoroughly aroused. "I don't want to be too
+short with you, but I've really got to get this done. One side, if you
+please," and having finished what he was doing, he started toward the
+airship.
+
+Whether in his haste Tom did not notice where he was going, or whether
+the man deliberately got in his way I cannot say, but at any rate they
+collided and the seeming farmer went spinning to one side, falling down.
+
+"Monsieur has struck me! I am insulted! You shall pay for this!" he
+cried, jumping to his feet, and making a rush for our hero.
+
+"All right. It was your own fault for bothering me but if you want
+anything I'll give it to you!" cried Tom, striking a position of
+defense.
+
+The man was about to rush at him, and there would have been a fight in
+another minute, had not Mr. Petrofsky, stepping to the open window of
+the pilot house, called out:
+
+"Tom! Tom! Come here, quick. Never mind him!"
+
+Swinging away from the man, the young inventor rushed toward the
+airship. As he entered the pilot house he noticed that his late
+questioner was racing off in the direction of the village.
+
+"What is it? What's the matter?" he asked of the Russian. "Is something
+more wrong with the airship?"
+
+"No, I just wanted to get you away from that man.
+
+"Oh, I could take care of myself."
+
+"I know that, but don't you see what his game was? I listened to him. He
+was seeking a quarrel with you."
+
+"A quarrel?"
+
+"Yes. He is a police spy. He wanted to get you into a fight and then he
+and you would be arrested by the local authorities. They'd clap you into
+jail, and hold us all here. It's a game! They suspect us, Tom! The
+Russian spies have had some word of our presence! We must get away as
+quickly as we can!"
+
+
+
+
+CHAPTER XIV
+
+HURRIED FLIGHT
+
+
+The announcement of Ivan Petrofsky came to Tom with startling
+suddenness. He could say nothing for a moment, and then, as he realized
+what it meant, and as he recalled the strange appearance and actions of
+the man, he understood the danger.
+
+"Was he a spy?" he asked.
+
+"I'm almost sure he was," came the answer. "He isn't one of the
+villagers, that's sure, and he isn't a tourist. No one else would be in
+this little out-of-the-way place but a police official. He is in
+disguise, that is certain."
+
+"I believe so," agreed Tom. "But what was his game?"
+
+"We are suspected," replied the Russian. "I was afraid a big airship
+couldn't land anywhere, in France without it becoming known. Word must
+have been sent to Paris in the night, and this spy came out directly."
+
+"But what will happen now?"
+
+"Didn't you see where he headed for? The village. He has gone to send
+word that his trick failed. There will be more spies soon, and we may be
+detained or thrown into jail on some pretext or other. They may claim
+that we have no license, or some such flimsy thing as that. Anything to
+detain us. They are after me, of course, and I'm sorry that I made you
+run such danger. Perhaps I'd better leave you, and--"
+
+"No, you don't!" cried Tom heartily. "We'll all hang together or we'll
+hang separately', as Benjamin Franklin or some of those old chaps once
+remarked. I'm not the kind to desert a friend in the face of danger."
+
+"Bless my revolver! I should say not!" cried Mr. Damon. "What's it all
+about? Where's the danger?"
+
+They told him as briefly as possible, and Ned, who had been working in
+the motor room, was also informed.
+
+"Well, what's to be done?" asked Tom. "Had we better get out our
+ammunition, or shall I take out a French license."
+
+"Neither would do any good," answered the Russian. "I appreciate your
+sticking by me, and if you are resolved on that the only thing to do is
+to complete the repairs as soon as possible and get away from here."
+
+"That's it!" cried Ned. "A quick flight. We can get more gasolene here,
+for lots of autos pass along the road through the village. I found that
+out. Then we needn't stop until we hit the trail for the mine in
+Siberia!"
+
+"Hush!" cautioned the Russian. "You can't tell who may be sneaking
+around to listen. But we ought to leave as soon as we can."
+
+"And we will," said Tom. "I've got the magneto almost fixed!"
+
+"Let's get a hustle on then!" urged Ned. "That fellow meant business
+from his looks. The nerve of him to try to pick a quarrel that way."
+
+"I might have told by his manner that something was wrong," commented
+Tom, "but I thought he was a fresh tramp and I didn't take any pains in
+answering him. But come on, Ned, get busy."
+
+They did, with such good effect that by noon the machinery was in
+running shape again, and so far there had been no evidence of the return
+of the spy. Doubtless he was waiting for instructions, and something
+might happen any minute.
+
+"Now, Ned, if you'll see to having some gasolene brought out here, and
+the tanks filled, I'll tinker with the dynamo and get that in running
+shape," said Tom. "It only needs a little adjustment of the brushes.
+Then we'll be off."
+
+Ned started for the village where there was a gasolene depot He fancied
+the villagers regarded him rather curiously, but he did not stop to ask
+what it meant. Another odd fact was that the usual crowd of curious
+rustics about the airship was missing. It was as though they suspected
+trouble might come, and they did not want to be mixed up in it.
+
+Never, Ned thought, had he seen a man so slow at getting ready the
+supply of gasolene. He was to take it out in a wagon, but first he
+mislaid the funnel, then the straining cloth, and finally he discovered
+a break in the harness that needed mending.
+
+"I believe he's doing it on purpose to delay us," thought the youth,
+"but it won't do to say anything. Something is in the wind." He helped
+the man all he could, and urged him in every way he knew, but the fellow
+seemed to have grown suddenly stupid, and answered only in French,
+though previously he had spoken some English.
+
+But at last Ned, by dint of hard work, got him started, and rode on the
+gasolene wagon with him. Once at the anchored airship, Tom and the
+others filled the reserve tanks themselves, though the man tried to
+help. However he did more harm than good, spilling several gallons of
+the fluid.
+
+"Oh, get away, and let us do it!" cried Tom at last. "I know what you--"
+
+"Easy!" cautioned Mr. Petrofsky, with a warning look, and Tom subsided.
+
+Finally the tanks were full, the man was paid, and he started to drive
+away.
+
+"Now to make a quick flight!" cried Tom, as he took his place in the
+pilot house, while Ned went to the engine room. "Full speed, Ned!"
+
+"Yes, and we'll need it, too," said the Russian.
+
+"Why?" asked Tom.
+
+"Look!" was the answer, and Ivan Petrofsky pointed across the field over
+which, headed toward the airship, came the man who had sought a quarrel
+with Tom. And with the spy were several policemen in uniform, their
+short swords dangling at their sides.
+
+"They're after us!" cried Mr. Damon. "Bless my chronometer they're after
+us!"
+
+"Start the motor, Ned! Start the motor!" cried Tom, and a moment later
+the hum of machinery was heard, while the police and the spy broke into
+a run, shouting and waving their hands.
+
+
+
+
+CHAPTER XV
+
+PURSUED
+
+
+Slowly the airship arose, almost too slowly to suit those on board who
+anxiously watched the oncoming officers. The latter had drawn their
+short swords, and at the sight of them Mr. Damon cried out:
+
+"Bless my football! If they jab them into the gas bag, Tom, we're done
+for!"
+
+"They won't get the chance," answered the young inventor, and he spoke
+truly, for a moment later, as the big propellers took hold of the air,
+the Falcon went up with a rush, and was far beyond the reach of the men.
+In a rage the spy shook his fist at the fast receding craft, and one of
+the policemen drew his revolver.
+
+"They're going to fire!" cried Ned.
+
+"They can't do much damage," answered Tom coolly. "A bullet hole in the
+bag is easily repaired, and anywhere else it won't amount to anything."
+
+The officer was aiming his revolver at the airship, now high above his
+head, but with a quick motion the spy pulled down his companion's arm,
+and they seemed to be disputing among themselves.
+
+"I wonder what that means?" mused Mr. Damon.
+
+"Probably they didn't want to risk getting into trouble," replied the
+Russian. "There are strict laws in France about using firearms, and as
+yet we are accused of no crime. We are only suspected, and I suppose the
+spy didn't want to get into trouble. He is on foreign ground, and there
+might be international complications."
+
+"Then you really think he was a spy?" asked Tom.
+
+"No doubt of it, and I'm afraid this is only the beginning of our
+trouble."
+
+"In what way?"
+
+"Well, of course word will be sent on ahead about us, and every where we
+go they'll be on the watch for us. They have our movements pretty well
+covered."
+
+"We won't make a descent until we get to Siberia," said Tom, "and I
+guess there it will be so lonesome that we won't be troubled much."
+
+"Perhaps," admitted the Russian, "but we will have to be on our guard.
+Of course keeping up in the air will be an advantage but they may--"
+
+He stopped suddenly and shrugged his shoulders.
+
+"What were you going to say?" inquired Ned.
+
+"Oh, it's just something that might happen, but it's too remote a
+possibility to work about. We're leaving those fellows nicely behind,"
+he added quickly, as though anxious to change the subject.
+
+"Yes, at this rate we'll soon be out of France," observed Tom, as he
+speeded the ship along still more. The young inventor wondered what Mr.
+Petrofsky had been going to say, but soon after this, some of the
+repaired machinery in the motor room needed adjusting, and the young
+inventor was kept so busy that the matter passed from his mind.
+
+The dynamo and magneto were doing much more efficient work since Tom had
+put the new platinum in, and the Falcon was making better time than ever
+before. They were flying at a moderate height, and could see wondering
+men, women and children rush out from their houses, to gaze aloft at the
+strange sight. Paris was now far behind, and that night they were
+approaching the borders of Prussia, as Mn Petrofsky informed them, for
+he knew every part of Europe.
+
+The route, as laid down by Tom and the Russian, would send the airship
+skirting the southern coast of the Baltic sea, then north-west, to pass
+to one side of St. Petersburg, and then, after getting far enough to the
+north, so as to avoid the big cities, they would head due east for
+Siberia.
+
+"In that way I think we'll avoid any danger from the Russian police,"
+remarked the exile.
+
+For the next few days they flew steadily on at no remarkable speed, as
+the extra effort used more gasolene than Tom cared to expend in the
+motor. He realized that he would need all he had, and he did not want to
+have to buy any more until he was homeward bound, for the purchase of it
+would lead to questions, and might cause their detention.
+
+Mr. Damon gave his friends good meals and they enjoyed their trip very
+much, though naturally there was some anxiety about whether it would
+have a successful conclusion.
+
+"Well, if we don't find the platinum mine we'll rescue your brother, if
+there's a possible chance!" exclaimed Tom one day, as he sat in the
+pilot house with the exile. "Jove! it will be great to drop down, pick
+him up, and fly away with him before those Cossacks, or whoever has him,
+know what's up."
+
+"I'm afraid we can't make such a sensational rescue as that," replied
+Mr. Petrofsky. "We'll have to go at it diplomatically. That's the only
+way to get an exile out of Siberia. We must get word to him somehow,
+after we locate him, that we are waiting to help him, and then we can
+plan for his escape. Poor Peter! I do hope we can find him, for if he is
+in the salt or sulphur mines it is a living death!" and he shuddered at
+the memory of his own exile.
+
+"How do you expect to get definite information as to where he might be?"
+asked Tom.
+
+"I think the only thing to do is to get in touch with some of the
+revolutionists," answered the Russian. "They have ways and means of
+finding out even state secrets. I think our best plan will be to land
+near some small town, when we get to the edge of Siberia. If we can
+conceal the airship, so much the better. Then I can disguise myself and
+go to the village."
+
+"Will it be safe?" inquired the young inventor.
+
+"I'll have to take that chance. It's the only way, as I am the only one
+in our party who can speak Russian."
+
+"That's right," admitted Tom with a laugh. "I'm afraid I could never
+master that tongue. It's as hard as Chinese."
+
+"Not quite," replied his friend, "but it is not an easy language for an
+American."
+
+They talked at some length, and then Tom noticing, by one of the
+automatic gages on the wall of the pilot house, that some of the
+machinery needed attention, went to attend to it.
+
+He was rather surprised, on emerging from the motor compartment, to see
+Mr. Damon standing on the open after deck of the Falcon gazing earnestly
+toward the rear.
+
+"Star-gazing in the day time?" asked Tom with a laugh.
+
+"Bless my individuality!" exclaimed the odd man. "How you startled me,
+Tom! No, I'm not looking at stars, but I've been noticing a black speck
+in the sky for some time, and I was wondering whether it was my
+eyesight, or whether it really is something."
+
+"Where is it?"
+
+"Straight to the rear," answered Mr. Damon, "and it seems to be about a
+mile up. It's been hanging in the same place this ten minutes."
+
+"Oh, I see," spoke Tom, when the speck had been pointed out to him.
+"It's there all right, but I guess it's a bird, an eagle perhaps. Wait,
+I'll get a glass and we'll take a look."
+
+As he was taking the telescope down from its rack in the pilot house,
+Mr. Petrofsky saw him.
+
+"What's up?" asked the Russian, and the youth told him.
+
+"Must be a pretty big bird to be seen at such a distance as it is,"
+remarked Tom.
+
+"Maybe it isn't a bird," suggested Ivan Petrofsky. "I'll take a look
+myself," and, showing something of alarm in his manner, he followed Tom
+to where Mr. Damon awaited them. Ned also came out on deck.
+
+Quickly adjusting the glass, Tom focused it on the black speck. It
+seemed to have grown larger. Me peered at it steadily for several
+seconds.
+
+"Is it a bird?" asked Mr. Damon.
+
+"Jove! It's another airship--a big biplane!" cried Tom, "and there seems
+to be three men in her."
+
+"An aeroplane!" gasped Ned.
+
+"Bless my deflecting rudder!" cried Mr. Damon. "An airship in this
+out-of-the-way place?" for they were flying over a desolate country.
+
+"And they're coming right after us," added Tom, as he continued to gaze.
+
+"I thought so," was the quiet comment of Mr. Petrofsky. "That is what I
+started to say a few days ago," he went on, "when I stopped, as I hardly
+believed it possible. I thought they might possibly send an aeroplane
+after us, as both the French and Russian armies have a number of fast
+ones. So they are pursuing us. I'm afraid my presence will bring you no
+end of trouble."
+
+"Let it come!" cried Tom. "If they can catch up to us they've got a good
+machine. Come on, Ned, let's speed her up, and make them take more of
+our star dust."
+
+"Wait a minute," advised the Russian, as he took the telescope from Tom,
+and viewed the ever-increasing speck behind them. "Are you sure of the
+speed of this craft?" he asked a moment later.
+
+"I never saw the one yet I couldn't pull away from, even after giving
+them a start," answered the young inventor proudly. "That is all but my
+little sky racer. I could let them get within speaking distance, and
+then pull out like the Congressional Limited passing a slow freight."
+
+"Then wait a few minutes," suggested Mr. Petrofsky. "That is an
+aeroplane all right, but I can't make out from what country. I'd like a
+better view, and if it's safe we can come closer."
+
+"Oh, it's safe enough," declared Tom. "I'll get things in shape for a
+quick move," and he hurried back to the machine room, while the others
+took turns looking at the oncoming aeroplane. And it was coming on
+rapidly, showing that it had tremendous power, for it was a very large
+one, carrying three men.
+
+"How do you suppose they got on our track?" asked Ned.
+
+"Oh, we must have been reported from time to time, as we flew over
+cities or towns," replied Mr. Petrofsky. "You know we're rather large,
+and can be seen from a good distance. Then too, the whole Russian secret
+police force is at the service of our enemies."
+
+"But we're not over Russia yet," said Mr. Damon.
+
+Ivan Petrofsky took the telescope and peered down toward the earth. They
+were not a great way above it, and at that moment they were passing a
+small village.
+
+"Can you tell where we are?" asked the odd man.
+
+"We are just over the border of the land of the Czar," was the quiet
+answer. "The imperial flag is flying from a staff in front of one of the
+buildings down there. We are over Russia."
+
+"And here comes that airship," called Ned suddenly.
+
+They gazed back with alarm, and saw that it was indeed so. The big
+aeroplane had come on wonderfully fast in the last few minutes.
+
+"Tom! Tom!" cried his chum. "Better get ready to make a sprint."
+
+"I'm all ready," calmly answered our hero. "Shall I go now?"
+
+"If you can give us a few seconds longer I may be able to tell who is
+after us," remarked Mr. Petrofsky, turning his telescope on the craft
+behind them.
+
+"I can let them get almost up to us, and get away," replied Tom.
+
+The Russian did not answer. He was gazing earnestly at the approaching
+aeroplane. A moment later he took the glass down from his eye.
+
+"It's our spy again," he said. "There are two others with him. That is
+one of the aeroplanes owned by the secret police. They are stationed all
+over Europe, ready for instant service, and they're on our trail."
+
+The pursuing craft was so near that the occupants could easily be made
+out with the naked eye, but it needed the glass to distinguish their
+features, and Mr. Petrofsky had done this.
+
+"Shall I speed up?" cried Tom.
+
+"Yes, get away as fast as you can!" shouted the Russian. "No telling
+what they may do," and then, with a hum and a roar the motor of the
+Falcon increased its speed, and the big airship shot ahead.
+
+
+
+
+CHAPTER XVI
+
+THE NIHILISTS
+
+
+From the pursuing aircraft came a series of sharp explosions that fairly
+rattled through the clear air.
+
+"Look out for bombs!" yelled Ned.
+
+"Bless my safety match!" cried Mr. Damon. "Are they anarchists?"
+
+"It's only their motor hack-firing," cried Tom. "It's all right, They're
+done for now, well leave them behind."
+
+He was a true prophet, for with a continued rush and a roar the airship
+of our friends opened up a big gap between her rear rudders and the
+forward planes of the craft that was chasing her. The three men were
+working frantically to get their motor in shape, but it was a useless
+task.
+
+A little later, finding that they were losing speed, the three police
+agents, or spies, whatever they might be, had to volplane to earth and
+there was no need for the Falcon to maintain the terrific pace, to which
+Tom had pushed her. The pursuit was over.
+
+"Well, we got out of that luckily," remarked Ned, as he looked down to
+where the spies were making a landing. "I guess they won't try that
+trick again."
+
+"I'm afraid they will," predicted Mr. Petrofsky. "You don't know these
+government agents as I do. They never give up. They'll fix their engine,
+and get on our trail again."
+
+"Then we'll make them work for what they get," put in Tom, who, having
+set the automatic speed accelerator, had rejoined his companions. "We'll
+try a high flight and if they can pick up a trail in the air, and come
+up to us, they're good ones!"
+
+He ran to the pilot house, and set the elevation rudder at its limit.
+Meanwhile the spies were working frantically over their motor, trying to
+get it is shape for the pursuit. But soon they realized that this was
+out of the question, for the Falcon was far away, every moment going
+higher and higher, until she was lost to sight beyond the clouds.
+
+"I guess they'll have their own troubles now," remarked Ned. "We've seen
+the last of them."
+
+"Don't be too sure," spoke the Russian. We may have them after us again.
+We're over the land of the Czar now, and they'll have everything their
+own way. They'll want to stop me at any cost."
+
+"Do you think they suspect that we're after the platinum?" asked Tom.
+
+"They may, for they know my brother and I were the only ones who ever
+located it, though unless I get in the exact neighborhood I'd have
+trouble myself picking it out. I remember some of the landmarks, but my
+brother is better at that sort of work than I am. But I think what they
+are mostly afraid of is that I have some designs on the life of, say one
+of the Grand Dukes, or some high official. But I am totally opposed to
+violent measures," went on Mr. Petrofsky. "I believe in a campaign of
+education, to gain for the down-trodden people what are their rights."
+
+"Do you think they know you are coming to rescue your brother?" asked
+Tom.
+
+"I don't believe so. And I hope not, for once they suspected that, they
+would remove him to some place where I never could locate him."
+
+Calmer feelings succeeded the excitement caused by the pursuit, and our
+friends, speculating on the matter, came to the conclusion that the
+aeroplane must have started from some Prussian town, as Mr. Petrofsky
+said there were a number of Russian secret police in that country. The
+Falcon was now speeding along at a considerable height, and after
+running for a number of miles, sufficient to preclude the possibility
+that they could be picked up by the pursuing aeroplane, Tom sent his
+craft down, as the rarefied atmosphere made breathing difficult.
+
+It was about three days after the chase when, having carefully studied
+the map and made several observations through the telescope of the
+Country over which they were traveling, that Ivan Petrofsky said:
+
+"If it can be managed, Tom, I think we ought to go down about here.
+There is a Russian town not far away, and I know a few friends there,
+There is a large stretch of woodland, and the airship can be easily
+concealed there.
+
+"All right," agreed the young inventor, "down we go, and I hope you get
+the information want."
+
+Flying high so as to keep out of the observation of the inhabitants of
+the Russian town, the young inventor sent his craft in a circle about
+it, and, having seen a clearing in the forest, he made a landing there,
+the Falcon having come to rest a second time since leaving Shopton, now
+several thousand miles away.
+
+"We'll hide here for a few days," observed Tom, "and you can spend as
+much time in town as you like, Mr. Petrofsky,"
+
+The Russian, disguising himself by trimming his beard, and putting on a
+pair of dark spectacles, went to the village that afternoon.
+
+While he was gone Tom, Ned and Mr. Damon busied themselves about the
+airship, making a few repairs that could not very well be done while it
+was in motion. As night came on, and the exile did not return, Tom began
+to get a little worried, and he had some notion of going to seek him,
+but he knew it would not be safe.
+
+"He'll come all right," declared Ned, as they sat down to supper. All
+about them was an almost impenetrable forest, cut here and there by
+paths along which, as Mr. Petrofsky had told them, the wood cutters
+drove their wagons.
+
+It was quite a surprise therefor, when, as they were leaving the table,
+a knock was heard on the cabin door.
+
+"Bless my electric bell!" cried Mr. Damon. "Who can that be?"
+
+"Mr. Petrofsky of course," answered Ned.
+
+"He wouldn't knock--he'd walk right in," spoke Tom, as he went to the
+door. As he opened it he saw several dark-bearded men standing there,
+and in their midst Mr. Petrofsky.
+
+For one moment our hero feared that his friend had been arrested and
+that the police bad come to take the rest of them into custody. But a
+word from the exile reassured him.
+
+"These are some of my friends," said Mr. Petrofsky simply. "They are
+Nihilists which I am not, but--"
+
+"Nihilists yes! Always!" exclaimed one who spoke English. "Death to the
+Czar and the Grand Dukes! Annihilation to the government!"
+
+"Gently my friend, gently," spoke Mr. Petrofsky. "I am opposed to
+violence you know." And then, while his new friends gazed wonderingly at
+the strange craft, he led them inside. Tom and the others were hardly
+able to comprehend what was about to take place.
+
+
+
+
+CHAPTER XVII
+
+ON TO SIBERIA
+
+
+"Has anything happened?" asked Tom. "Are we suspected? Have they come to
+warn us?"
+
+"No, everything is all right, so far," answered Ivan Petrofsky. "I
+didn't have the success I hoped for, and we may have to wait here for a
+few days to get news of my brother. But these men have been very kind to
+me," he went on, "and they have ways of getting information that I have
+not. So they are going to aid me."
+
+"That's right!" exclaimed the one who had first spoken. "We will yet win
+you to our cause, Brother Petrofsky. Death to the Czar and the Grand
+Dukes!"
+
+"Never!" exclaimed the exile firmly. "Peaceful measures will succeed.
+But I am grateful for what you can do for me. They heard me describe
+your wonderful airship," he explained to Tom, "and wanted to see for
+themselves."
+
+The Nihilists were made welcome after Mr. Petrofsky had introduced them.
+They had strange and almost unpronounceable names for the ears of our
+friends, and I will not trouble you with them, save to say that the one
+who spoke English fairly well, and who was the leader, was called
+Nicolas Androwsky. There was much jabbering in the Russian tongue, when
+Mr. Petrofsky and Mr. Androwsky took the others about the craft,
+explaining how it worked.
+
+"I can't show you the air glider," said Tom, who naturally acted as
+guide, "as it would take too long to put together, and besides there is
+not enough wind here to make it operate."
+
+"Then you need much wind?" asked Nicolas Androwsky.
+
+"The harder the gale the better she flies," answered Tom proudly.
+
+"Bless my sand bag, but that's right!" exclaimed Mr. Damon, who, up to
+now had not taken much part in the conversation. He followed the party
+about the airship, keeping in the rear, and he eyed the Nihilists as if
+he thought that each one had one or more dynamite bombs concealed on his
+person.
+
+"Ha!" exclaimed Mr. Androwsky, turning suddenly to the odd man. "Are you
+not one of us? Do you not believe that this terrible kingdom should be
+destroyed--made as nothing, and a new one built from its ashes? Are you
+not one of us?" and with a quick gesture he reached into his pocket.
+
+"No! No!" exclaimed Mr. Damon, starting back. "Bless my election ticket!
+No! Never could I throw a bomb. Please don't give me one." Mr. Damon
+started to run away.
+
+"A bomb!" exclaimed the Nihilist, and then he drew from his pocket some
+pamphlets printed in Russian. "I have no bombs. Here are some of the
+tracts we distribute to convert unbelievers to our cause," he went on.
+"Read them and you will understand what we are striving for. They will
+convert you, I am sure."
+
+He went on, following the rest of the party, while Mr. Damon dropped
+back with Ned.
+
+"Bless my gas meter!" gasped the odd man, as he stared at the
+queerly-printed documents in his hand. "I thought he was going to give
+me a bomb to throw!"
+
+"I don't blame you," said Ned in a low voice. "They look like desperate
+men, but probably they have suffered many hardships, and they think
+their way of righting a wrong is the only way. I suppose you'll read
+those tracts," he added with a smile.
+
+"Hum! I'm afraid not," answered Mr. Damon. "I might just as well try to
+translate a Chinese laundry check. But I'll save 'em for souvenirs," and
+he carefully put them in his pocket, as if he feared they might
+unexpectedly turn into a bomb and blow up the airship.
+
+The tour of the craft was completed and the Nihilists returned to the
+comfortable cabin where, much to their surprise, they were served with a
+little lunch, Mr. Damon bustling proudly about from the table to the
+galley, and serving tea as nearly like the Russians drink it as
+possible.
+
+"Well, you certainly have a wonderful craft here--wonderful," spoke Mr.
+Androwsky. "If we had some of these in our group now, we could start
+from here, hover over the palace of the Czar, or one of the Grand Dukes,
+drop a bomb, utterly destroy it, and come back before any of the hated
+police would be any the wiser."
+
+"I'm afraid I can't lend it to you," said Tom, and he could scarcely
+repress a shudder at the terrible ideas of the Nihilists.
+
+"It would never do," agreed Ivan Petrofsky. "The campaign of education
+is the only way."
+
+There were gutteral objections on the part of the other Russians, and
+they turned to more cheerful subjects of talk.
+
+"What are your plans?" asked Tom of the exile. "You say you can get no
+trace here of your brother?"
+
+"No, he seems to have totally disappeared from sight. Usually we enemies
+of the government can get some news of a prisoner, but poor Peter is
+either dead, or in some obscure mine, which is hidden away in the
+forests or mountains."
+
+"Maybe he is in the lost platinum mine," suggested Ned.
+
+"No, that has not been discovered," declared the exile, "or my friends
+here would have heard of it. That is still to be found."
+
+"And we'll do it, in the air glider," declared Tom. "By the way, Mr.
+Petrofsky, would it not be a good plan to ask your friends the location
+of the place where the winds constantly blow with such force. It occurs
+to me that in some such way we might locate the mine."
+
+"It would be of use if there was only one place of the gales," replied
+the exile. "But Siberia has many such spots in the mountain
+fastnesses--places which, by the peculiar formation of the land, have
+constant eddys of air over them. No, the only way is for us to go as
+nearly as possible to the place where my brother and I were imprisoned,
+and search there."
+
+"But what is that you said about us having to stay here, to get some
+news of your brother?" asked Tom.
+
+"I had hoped to get some information here," resumed Mr. Petrofsky, "but
+my friends here are without news. However, they are going to make
+inquiries, and we will have to stay here until they have an answer. It
+will be safe, they think, as there are not many police in town, and the
+local authorities are not very efficient. So the airship will remain
+here, and, from time to time I will go to the village, disguised, and
+see if any word has come."
+
+"And we will bring you news as soon as we get it," promised Mr.
+Androwsky. "You are not exactly one of us, but you are against the
+government, and, therefor, a brother. But you will be one of us in
+time."
+
+"Never," replied the exile with a smile. "My only hope now is to get my
+brother safely away, and then we will go and live in free America. But,
+Tom, I hope I won't put you out by delaying here."
+
+"Not a bit of it. More than half the object of our trip is to rescue
+your brother. We must do that first. Now as to details," and they fell
+to discussing plans. It was late that night when the Nihilists left the
+airship, first having made a careful inspection to see that they were
+not spied upon. They promised at once to set to work their secret
+methods of getting information.
+
+For several days the airship remained in the vicinity of the Russian
+town. Our friends were undisturbed by visitors, as they were in a forest
+where the villagers seldom came and the nearest wood-road was nearly
+half a mile off.
+
+Every day either Mr. Petrofsky went in to town to see the Nihilists or
+some of them came out to the Falcon, usually at night.
+
+"Well, have you any word yet?" asked Tom, after about a week had passed.
+
+"Nothing yet," answered the exile, and his tone was a bit hopeless. "But
+we have not given up. All the most likely places have been tried, but he
+is not there. We have had traces of him, but they are not fresh ones. He
+seems to have been moved from one mine to another. Probably they feared
+I would make an attempt to rescue him. But I have not given up. Me is
+somewhere in Siberia."
+
+"And we'll find him!" cried Tom with enthusiasm.
+
+For three days more they lingered, and then, one night, when they were
+just getting ready to retire, there was a knock on the cabin door. Mr.
+Petrofsky had been to the village that day, and had received no news. He
+had only returned about an hour before.
+
+"Some one's knocking," announced Ned, as if there could be any doubt of
+it.
+
+"Bless my burglar alarm!" gasped Mr. Damon.
+
+"I'll see who it is," volunteered Mr. Petrofsky, and Tom looked toward
+the rack of loaded rifles, for that day a man, seemingly a wood cutter
+had passed close to the airship, and had hurried off as if he had seen a
+ghost.
+
+The knock was repeated. It might be their friends, and it might be--
+
+But Mr. Petrofsky solved the riddle by throwing back the portal, and
+there stood the Nihilist, Nicolas Androwsky.
+
+"Is there anything the matter?" asked the exile quickly.
+
+"We have news," was the cautious answer, as the Nihilist slipped in, and
+closed the door behind him.
+
+"News of my brother?"
+
+"Of your brother! He is in a sulphur mine in the Altai Mountains, near
+the city of Abakansk."
+
+"Where's that?" asked Tom for he had forgotten most of his Russian
+geography.
+
+"The Altai Mountains are a range about the middle of Siberia," explained
+Mr. Petrofsky. "They begin at the Kirghiz Steppes, and run west. It is a
+wild and desolate place. I hope we can find poor Peter alive."
+
+"And this city of Abakansk?" went on the young inventor.
+
+"It is many miles from here, but I can give you a good map," said the
+Nihilist. "Some of our friends are there," he added with a half-growl.
+"I wish we could rescue all of them."
+
+"We'd like to," spoke Tom. "But I fear it is impossible. But now that we
+have a clew, come on! Let's start at once! It may be dangerous to stay
+here. On to Siberia!"
+
+
+
+
+CHAPTER XVIII
+
+IN A RUSSIAN PRISON
+
+
+The news they had waited for had come at last. It might be a false clew,
+but it was something to work on, and Tom was tired of inaction. Then,
+too, even after they had started, the prisoner might be moved and they
+would have to trace him again.
+
+"But that is the latest information we could get," said Mr. Androwsky.
+"It came through some of our Anarchist friends, and I believe is
+reliable. Can you soon make a thousand miles in your airship?"
+
+"Yes," answered Tom, "if I push her to the limit."
+
+"Then do so," advised the Nihilist, "for there is need of haste. In
+making inquiries our friends might incur suspicions and Peter Petrofsky
+may be exiled to some other place."
+
+"Oh, we'll get there," cried Tom. "Ned, see to the gas machine. Mr.
+Damon, you can help me in the pilot house."
+
+"Here is a map of the best route," said the Nihilist, as he handed one
+to Mr. Petrofsky. "It will take you there the shortest way. But how can
+you steer when high in the air?"
+
+"By compass," explained Tom. "We'll get there, never fear, and we're
+grateful for your clew."
+
+"I never can thank you enough!" exclaimed the exile, as he shook hands
+with Mr. Androwsky,
+
+The Nihilist left, after announcing that, in the event of the success of
+Tom and his friends, and the rescue of the exile from the sulphur mine,
+it would probably become known to them, as such news came through the
+Revolutionary channels, slowly but surely.
+
+"Here we go!" cried the young inventor gaily, as he turned the starting
+lever in the pilot house, and silently, in the darkness of the night,
+the Falcon shot upward. There was not a light on board, for, though
+small signal lamps had been kept burning when the craft was in the
+forest, to guide the Nihilists to her, now that she was up in the air,
+and in motion, it was feared that her presence would become known to the
+authorities of the town, so even these had been extinguished.
+
+"After we get well away we can turn on the electrics," remarked Tom,
+"and if they see us at a distance they may take us for a meteor. But, so
+close as this, they'd get wise in a minute."
+
+Mr. Damon, who had done all that Tom needed in the starting of the
+craft, went to the forward port rail, and idly looked down on the black
+forest they were leaving. He could just make out the clearing where they
+had rested for over a week, and he was startled to see lights bobbing in
+it.
+
+"I say, Mr. Petrofsky!" he called. "Did we leave any of our lanterns
+behind us?"
+
+"I don't believe so," answered the exile. "I'll ask Tom."
+
+"Lanterns? No," answered the young inventor. "Before we started I took
+down the only one we had out. I'll take a look."
+
+Setting the automatic steering apparatus, he joined Mr. Damon and the
+Russian. The lights were now dimly visible, moving about in the forest
+clearing.
+
+"It's just as if they were looking for something," said Tom. "Can it be
+that any of your Nihilist friends, Mr. Petrofsky are--"
+
+"Friends--no friends--enemies!" cried the Russian. "I understand now! We
+got away just in time. Those are police agents who are looking for us!
+They must have received word about our being there. Androwsky and the
+others never carry lights when they go about. They know the country too
+well, and then, too, it leads to detection. No, those are police spies.
+A few minutes later, and we would have been discovered."
+
+"As it is we're right over their heads, and they don't know it,"
+chuckled Tom. The airship was moving silently along before a good
+breeze, the propellers not having been started, and Tom let her drift
+for several miles, as he did not want to give the police spies a clew by
+the noise of the motor.
+
+The twinkling lights in the forest clearing disappeared from sight, and
+the seekers went on in the darkness.
+
+"Well, we've got the hardest part of our work yet ahead of us," remarked
+Tom several hours later when, the lights having been set aglow, they
+were gathered in the main cabin. There was no danger of being seen now,
+for they were quite high.
+
+"We've done pretty well, so far," commented Ned. "I think we will have
+easier work rescuing Mr. Petrofsky's brother than in locating the mine.
+
+"I don't know about that," answered the Russian. "It is almost
+impossible to rescue a person from Siberia. Of course it is not going to
+be easy to locate the lost mine, but as for that we can keep on
+searching, that is if the air glider works, but there are so many forces
+to fight against in rescuing a prisoner."
+
+They had a long journey ahead of them, and not an easy route to follow,
+but as the days passed, and they came nearer and nearer to their goal,
+they became more and more eager.
+
+They were passing over a desolate country, for they avoided the vicinity
+of large towns and cities.
+
+"I wonder when we'll strike Siberia?" mused Tom one afternoon, as they
+sat on the outer deck, enjoying the air.
+
+"At this rate of progress, very soon," answered the exile, after
+glancing at the map. "We should be at the foot of the Ural mountains in
+a few hours, and across them in the night. Then we will be in Siberia."
+
+And he was right, for just as supper was being served, Ned, who had been
+making observations with a telescope, exclaimed:
+
+"These must be the Urals!"
+
+Mr. Petrofsky seized the glass.
+
+"They are," he announced. "We will cross between Orsk and Iroitsk. A
+safe place. In the morning we will be in Siberia--the land of the
+exiles."
+
+And they were, morning seeing them flying over a most desolate stretch
+of landscape. Onward they flew, covering verst after verst of
+loneliness.
+
+"I'm going to put on a little more speed," announced Tom, after a visit
+to the storeroom, where were kept the reserve tanks of gasolene. "I've
+got more fluid than I thought I had, and as we're on the ground now I
+want to hurry things. I'm going to make better time," and he yanked over
+the lever of the accelerator, sending the Falcon ahead at a rapid rate.
+
+All day this was kept up, and they were just making an observation to
+determine their position, along toward supper time, when there came the
+sound of another explosion from the motor room.
+
+"Bless my safety valve!" cried Mr. Damon. "Something has gone wrong
+again."
+
+Tom ran to the motor, and, at the same time the Falcon which was being
+used as an aeroplane and not as a dirigible, began to sink.
+
+"We're going down!" cried Ned.
+
+"Well, you know what to do!" shouted his chum. "The gas bag! Turn on the
+generator!"
+
+Ned ran to it, but, in spite of his quick action, the craft continued to
+slide downward.
+
+"She won't work !" he cried.
+
+"Then the intake pipe must be stopped!" answered the young inventor.
+"Never mind, I'll volplane to earth and we can make repairs. That
+magneto has gone out of business again."
+
+"Don't land here!" cried Ivan Petrofsky.
+
+"Why not?"
+
+"Because we are approaching a large town--Owbinsk I think it is-the
+police there will be there to get us. Keep on to the forest again!"
+
+"I can't!" cried Tom. "We've got to go down, police or no police."
+
+Running to the pilot house, he guided the craft so that it would safely
+volplane to earth. They could all see that now they were approaching a
+fairly large town, and would probably land on its outskirts. Through the
+glass Ned could make out people staring up at the strange sight.
+
+"They'll be ready to receive us," he announced grimly.
+
+"I hope they have no dynamite bombs for us," murmured Mr. Damon. "Bless
+my watch chain! I must get rid of that Nihilist literature I have about
+me, or they'll take me for one," and he tore up the tracts, and
+scattered them in the air.
+
+Meanwhile the Falcon continued to descend.
+
+"Maybe I can make quick repairs, and get away before they realize who we
+are," said Tom, as he got ready for the landing.
+
+They came down in a big field, and, almost before the bicycle wheels had
+ceased revolving, under the application of the brakes, several men came
+running toward them.
+
+"Here they come!" cried Mr. Damon.
+
+"They are only farmers," said the exile. He had donned his dark glasses
+again, and looked like anything but a Russian.
+
+"Lively, Ned!" cried Tom. "Let's see if we can't make repairs and get
+off again."
+
+The two lads frantically began work, and they soon had the magneto in
+running order. They could have gone up as an aeroplane, leaving the
+repairs to the gas bag to be made later but, just as they were ready to
+start, there came galloping out a troop of Cossack soldiers. Their
+commander called something to them.
+
+"What is he saying?" cried Tom to Mr. Petrofsky.
+
+"He is telling them to surround us so that we can not get a running
+start, such as we need to go up. Evidently he understands aeroplanes."
+
+"Well, I'm going to have a try," declared the young inventor.
+
+He jumped to the pilot house, yelling to Ned to start the motor, but it
+was too late. They were hemmed in by a cordon of cavalry, and it would
+have been madness to have rushed the Falcon into them, for she would
+have been wrecked, even if Tom could have succeeded in sending her
+through the lines.
+
+"I guess it's all up with us," groaned Ned.
+
+And it seemed to; for, a moment later, an officer and several aides
+galloped forward, calling out something in Russian.
+
+"What is it?" asked Tom.
+
+"He says we are under arrest," translated the exile.
+
+"What for?" demanded the young inventor.
+
+Ivan Petrofsky shrugged his shoulders.
+
+"It is of little use to ask--now," he answered. "It may be we have
+violated some local law, and can pay a fine and go, or we may be taken
+for just what we are, or foreign spies, which we are not. It is best to
+keep quiet, and go with them."
+
+"Go where?" cried Tom.
+
+"To prison, I suppose," answered the exile. "Keep quiet, and leave it to
+me. I will do all I can. I don't believe they will recognize me.
+
+"Bless my search warrant!" cried Mr. Damon. "In a Russian prison! That
+is terrible!"
+
+A few minutes later, expostulations having been useless, our friends
+were led away between guards who carried ugly looking rifles, and who
+looked more ugly and menacing themselves. Then the doors of the Russian
+prison of Owbinsk closed on Tom and his friends, while their airship was
+left at the mercy of their enemies.
+
+
+
+
+CHAPTER XIX
+
+LOST IN A SALT MINE
+
+
+The blow had descended so suddenly that it was paralyzing. Tom and his
+friends did not know what to do, but they saw the wisdom of the course
+of leaving everything to Ivan Petrofsky. He was a Russian, and he knew
+the Russian police ways--to his sorrow.
+
+"I'm not afraid," said Tom, when they had been locked in a large prison
+room, evidently set apart for the use of political, rather than
+criminal, offenders. "We're United States citizens, and once our counsel
+hears of this--as he will--there'll be some merry doings in Oskwaski, or
+whatever they call this place. But I am worried about what they may do
+to the Falcon."
+
+"Have no fears on that score," said the Russian exile. "They know the
+value of a good airship, and they won't destroy her."
+
+"What will they do then?" asked Tom.
+
+"Keep her for their own use, perhaps."
+
+"Never!" cried Tom. "I'll destroy her first!"
+
+"If you get the chance!" interposed the exile.
+
+"But we're American citizens!" cried Tom, "and--"
+
+"You forget that I am not," interrupted Mr. Petrofsky. "I can't claim
+the protection of your flag, and that is why I wish to remain unknown.
+We must act quietly. The more trouble we make, the more important they
+will know us to be. If we hope to accomplish anything we must act
+cautiously."
+
+"But my airship!" cried Tom.
+
+"They won't do anything to that right away," declared the Russian in a
+whisper for he knew sometimes the police listened to the talk of
+prisoners. "I think, from what I overheard when they arrested us, that
+we either trespassed on the grounds of some one in authority, who had us
+taken in out of spite, or they fear we may be English or French spies,
+seeking to find out Russian secrets."
+
+They were served with food in their prison, but to all inquiries made by
+Ivan Petrofsky, evasive answers were returned. He spoke in poor, broken
+Russian, so that he would not be taken for a native of that country. Had
+he been, he would have at once been in great danger of being accused as
+an escaped exile.
+
+Finally a man who, the exile whispered to his Companions, was the local
+governor, came to their prison. He eagerly asked questions as to their
+mission, and Mr. Petrofsky answered them diplomatically.
+
+"I don't think he'll make much out of what I told him," said the exile
+when the governor had gone. "I let him think we were scientists, or
+pleasure seekers, airshipping for our amusement. He tried to tangle me
+up politically, but I knew enough to keep out of such traps."
+
+"What's going to become of us?" asked Ned.
+
+"We will be detained a few days--until they find out more about us.
+Their spies are busy, I have no doubt, and they are telegraphing all
+over Europe about us."
+
+"What about my airship?" asked Tom.
+
+"I spoke of that," answered the exile. "I said you were a well-known
+inventor of the United States, and that if any harm came to the craft
+the Russian Government would not only be held responsible, but that the
+governor himself would be liable, and I said that it cost much money.
+That touched him, for, in spite of their power, these Russians are
+miserably paid. He didn't want to have to make good, and if it developed
+that he had made a mistake in arresting us, his superiors would disclaim
+all responsibility, and let him shoulder the blame. Oh, all is not lost
+yet, though I don't like the looks of things."
+
+Indeed it began to seem rather black for our friends, for, that night
+they were taken from the fairly comfortable, large, prison room, and
+confined in small stone cells down in a basement. They were separated,
+but as the cells adjoined on a corridor they could talk to each other.
+With some coarse food, and a little water, Tom and his friends were left
+alone.
+
+"Say I don't like this!" cried our hero, after a pause.
+
+"Me either," chimed in Ned.
+
+"Bless my burglar alarm!" exclaimed Mr. Damon. "It's an awful disgrace!
+If my wife ever heard of me being in jail--"
+
+"She may never hear of it!" interposed Tom.
+
+"Bless my heart!" cried the odd man. "Don't say such things."
+
+They discussed their plight at length, but nothing could be done, and
+they settled themselves to uneasy slumber. For two days they were thus
+imprisoned, and all of Mr. Petrofsky's demands that they be given a fair
+trial, and allowed to know the nature of the charge against them, went
+for naught. No one came to see them but a villainous looking guard, who
+brought them their poor meals. The governor ignored them, and Mr.
+Petrofsky did not know what to think.
+
+"Well, I'm getting sick of this!" exclaimed Tom--I wish I knew where my
+airship was."
+
+"I fancy it's in the same place," replied the exile. "From the way the
+governor acted I think he'd be afraid to have it moved. It might be
+damaged. If I could only get word to some of my Revolutionary friends it
+might do some good, but I guess I can't. We'll just have to wait."
+
+Another day passed, and nothing happened. But that night, when the guard
+came to bring their suppers, something did occur.
+
+"Hello! we've got a new one!" exclaimed Tom, as he noted the man. "Not
+so bad looking, either."
+
+The man peered into his cell, and said something in Russian.
+
+"Nothing doing," remarked the young inventor with a short laugh. "Nixy
+on that jabbering."
+
+But, no sooner had the man's words penetrated to the cell of Ivan
+Petrofsky, that the exile called out something. The guard started,
+hastened to that cell door, and for a few seconds there was an excited
+dialogue in Russian.
+
+"Boys! Mr. Damon! We're saved!" suddenly cried out Mr. Petrofsky.
+
+"Bless my door knob! You don't say so!" gasped the odd man. "How? Has
+the Czar sent orders to release us."
+
+"No, but somehow my Revolutionary friends have heard about my arrest,
+and they have arranged for our release--secretly of course. This guard
+is affiliated with the Nihilist group that got on the trail of my
+brother. He bribed the other guard to let him take his place for
+to-night, and now--"
+
+"Yes! What is it?" cried Tom.
+
+"He's going to open the cell doors and let us out!"
+
+"But how can we get past the other guards, upstairs?" asked Ned.
+
+"We're not going that way," explained Mr. Petrofsky. "There is a secret
+exit from this corridor, through a tunnel that connects with a large
+salt mine. Once we are in there we can make our way out. We'll soon be
+free."
+
+"Ask him if he's heard anything of my airship?" asked Tom. Mr. Petrofsky
+put the question rapidly in Russian and then translated the answer.
+
+"It's in the same place."
+
+"Hurray!" cried Tom.
+
+Working rapidly, the Nihilist guard soon had the cell doors open, for he
+had the keys, and our friends stepped out into the corridor.
+
+"This way," called Ivan Petrofsky, as he followed their liberator, who
+spoke in whispers. "He says he will lead us to the salt mine, tell us
+how to get out and then he must make his own escape."
+
+"Then he isn't coming with us?" asked Ned.
+
+"No, it would not he safe. But he will tell us how to get out. It seems
+that years ago some prisoners escaped this way, and the authorities
+closed up the tunnel. But a cavein of the salt mine opened a way into it
+again."
+
+They followed their queer guide, who led them down the corridor. He
+paused at the end, and then, diving in behind a pile of rubbish, he
+pulled away some boards. A black opening, barely large enough for a man
+to walk in upright, was disclosed.
+
+"In there?" cried Tom.
+
+"In there," answered Mr. Petrofsky. He and the guard murmured their
+good-byes, and then, with a lighted candle the faithful Nihilist had
+provided, and with several others in reserve, our friends stepped into
+the blackness. They could hear the board being pulled back into place
+behind them.
+
+"Forward!" cried the exile, and forward they went.
+
+It was not a pleasant journey, being through an uneven tunnel in the
+darkness. Half a mile later they emerged into a large salt mine, that
+seemed to be directly beneath the town. Work in this part had been
+abandoned long ago, all the salt there was left being in the shape of
+large pillars, that supported the roof. It sparkled dully in the candle
+light.
+
+"Now let me see if I remember the turnings," murmured Mr. Petrofsky. "He
+said to keep on for half an hour, and we would come out in a little
+woods not far from where our airship was anchored."
+
+Twisting and turning, here and there in the semi-darkness, stumbling,
+and sometimes falling over the uneven floor, the little party went on.
+
+"Did you say half an hour?" asked Tom, after a while.
+
+"Yes," replied the Russian.
+
+"We've been longer than that," announced the young inventor, after a
+look at his watch. "It's over an hour."
+
+"Bless my timetable!" cried Mr. Damon.
+
+"Are you sure?" asked Mr. Petrofsky.
+
+"Yes," answered Tom in a low voice.
+
+The Russian looked about him, flashing the candle on several turnings
+and tunnels. Suddenly Ned uttered a cry.
+
+"Why, we passed this place a little while before!" he said. "I remember
+this pillar that looks like two men wrestling!"
+
+It was true. They all remembered it when they saw it again.
+
+"Back in the same place!" mused the Russian. "Then we have doubled on
+our tracks. I'm afraid we're lost!"
+
+"Lost in a Russian salt mine!" gasped Tom, and his words sounded ominous
+in that gloomy place.
+
+
+
+
+CHAPTER XX
+
+THE ESCAPE
+
+
+For a space of several seconds no one moved or spoke. In the flickering
+light of the candle they looked at one another, and then at the
+fantastic pillars of salt all about them. Then Mr. Damon started
+forward.
+
+"Bless my trolley car!" he exclaimed. "It isn't possible! There must be
+some mistake. If we'll keep on we'll come out all right. You know your
+way about, don't you, Mr. Petrofsky?"
+
+"I thought I did, from what the guard told us, but it seems I must have
+taken a wrong turning."
+
+"Then it's easily remedied," suggested Tom "All we'll have to do will be
+to go to the place where we started, and begin over again."
+
+"Of course," agreed Ned, and they all seemed more cheerful.
+
+"And if we start out once more, and get lost again, then what?" asked
+Mr. Damon.
+
+"Well, if worst comes to worst, we can go, back in the tunnel, go to our
+cells and ask the guard to come with us and show us the way went on Tom.
+
+"Never!" cried the exile. "It would be the most dangerous thing in the
+world to go back to the prison. Our escape has probably been discovered
+by this time, and to return would only be to put our heads in the noose.
+We must keep on at any cost!"
+
+"But if we can't get out," suggested Tom, "and if we haven't anything to
+eat or drink, we--"
+
+He did not finish, but they all knew what he meant.
+
+"Oh, we'll get out!" declared Ned, who was something of an optimist.
+"You've been in salt mines before, haven't you, Mr. Petrofsky?"
+
+"Yes, I was condemned to one once, but it was not in this part of the
+country, and it was not an abandoned one. I imagine this was only an
+isolated mine, and that there are no others near it, so when they
+abandoned it, after all the salt was taken out, most people forgot about
+it. I remember once a party of prisoners were lost in a large salt mine,
+and were missed for several days."
+
+"What happened to them?" asked Tom.
+
+"I don't like to talk about it," replied the Russian with a shudder.
+
+"Bless my soul! Was it as bad as that?" asked Mr. Damon.
+
+"It was," replied the exile. "But now let's see if we can find our way
+back, and start afresh. I'll be more careful next time, and watch the
+turns more closely."
+
+But he did not get the chance. They could not find the tunnel whence
+they had started. Turn after turn they took, down passage after passage
+sometimes in such small ones that they almost had to crawl.
+
+But it was of no use. They could not find their way back to the starting
+place, and they could not find the opening of the mine. They had used
+two of the slow burning candles and they had only half a dozen or so
+left. When these were gone--
+
+But they did not like to think of that, and stumbled on and on. They did
+not talk much, for they were too worried. Finally Ned gasped:
+
+"I'd give a good deal for a drink of water."
+
+"So would I," added his chum. "But what's the use of wishing? If there
+was a spring down here it would be salt water. But I know what I would
+do--if I could."
+
+"What?" asked Mr. Damon.
+
+"Go back to the prison. At least we wouldn't starve there, and we'd have
+something to drink. If they kept us we know we could get
+free--sometime."
+
+"Perhaps never!" exclaimed Ivan Petrofsky. "It is better to keep on
+here, and, as for me, I would rather die here than go back to a Russian
+prison. We must--we shall get out!"
+
+But it was idle talk. Gradually they lost track of time as they
+staggered on, and they hardly knew whether a day had passed or whether
+it was but a few hours since they had been lost.
+
+Of their sufferings in that salt mine I shall not go into details. There
+are enough unpleasant things in this world without telling about that.
+They must have wandered around for at least a day and a half, and in all
+that while they had not a drop of water, and not a thing to eat. Wait,
+though, at last in their desperation they did gnaw the tallow candles,
+and that served to keep them alive, and, in a measure, alleviate their
+awful sufferings from thirst.
+
+Back and forth they wandered, up and down in the galleries of the old
+salt mine. They were merely hoping against hope.
+
+"It's worse than the underground city of gold," said Ned in hollow
+tones, as he staggered on. "Worse--much worse." His head was feeling
+light. No one answered him.
+
+It was, as they learned later, just about two days after the time when
+they entered the mine that they managed to get out. Forty-eight hours,
+most of them of intense suffering. They were burning their last candle,
+and when that was out they knew they would have the horrors of darkness
+to fight against, as well as those of hunger and thirst.
+
+But fate was kind to them. How they managed to hit on the right gallery
+they did not know, but, as they made a turn around an immense pillar of
+salt Tom, who was walking weakly in advance, suddenly stopped.
+
+"Look! Look!" he whispered. "Another candle! Someone--someone is
+searching for us! We are saved!"
+
+"It may be the police!" said Ned.
+
+"That is not a candle," spoke the Russian in hollow tones as he looked
+to where Tom pointed, to a little glimmer of light. "It is a star.
+Friends, we are saved, and by Providence! That is a star, shining
+through the opening of the mine. We are saved!"
+
+Eagerly they pressed forward, and they had not gone far before they knew
+that the exile was right. They felt the cool night wind on their hot
+cheeks.
+
+"Thank heaven!" gasped Tom, as he pushed on.
+
+A moment later, climbing over the rusted rails on which the mine cars
+had run with their loads of salt, they staggered into the open. They
+were free--under the silent stars!
+
+"And now, if we can only find the airship," said Tom faintly, "we can--"
+
+"Look there!" whispered Ned, pointing to a patch of deeper blackness
+that the surrounding night. "What's that."
+
+"The Falcon!" gasped Tom. He started toward her, for she was but a short
+distance from a little clump of trees into which they had emerged from
+the opening of the salt mine. There, on the same little plane where they
+had landed in her was the airship. She had not been moved.
+
+"Wait!" cautioned Ivan Petrofsky. "She may be guarded."
+
+Hardly had he spoken than there walked into the faint starlight on the
+side of the ship nearest them, a Cossack soldier with his rifle over his
+shoulder.
+
+"We can't get her!" gasped Ned.
+
+"We've got to get her!" declared Tom. "We'll die if we don't!"
+
+"But the guards! They'll arrest us!" said the exile.
+
+An instant later a second soldier joined the first, and they could be
+seen conversing. They then resumed their pacing around the anchored
+craft. Evidently they were waiting for the escaped prisoners to come up
+when they would give the alarm and apprehend them.
+
+"What can we do?" asked Mr. Damon.
+
+"I have a plan," said Tom weakly. "It's the only chance, for we're not
+strong enough to tackle them. Every time they go around on the far side
+of the airship we must creep forward. When they come on this side we'll
+lie down. I doubt if they can see us. Once we are on hoard we can cut
+the ropes, and start off. Everything is all ready for a start if they
+haven't monkeyed with her, and I don't think they have. We've got room
+enough to run along as an aeroplane and mount upward. It's our only
+hope."
+
+The others agreed, and they put the plan into operation. When the
+Cossack guards were out of sight the escaped prisoners crawled forward,
+and when the soldiers came into view our friends waited in silence.
+
+It took several minutes of alternate creeping and waiting to do this,
+but it was accomplished at last and unseen they managed to slip aboard
+Then it was the work of but a moment to cut the restraining ropes.
+
+Silently Tom crept to the motor room. He had to work in absolute
+darkness, for the gleam of a light would have drawn the fire of the
+guards. But the youth knew every inch of his invention. The only
+worriment was whether or not the motor would start up after the
+breakdown, not having been run since it was so hastily repaired. Still
+he could only try.
+
+He looked out, and saw the guards pacing back and forth. They did not
+know that the much-sought prisoners were within a few feet of them.
+
+Ned was in the pilot house. He could see a clear field in front of him.
+
+Suddenly Tom pulled the starting lever. There was a little clicking,
+followed by silence. Was the motor going to revolve? It answered the
+next moment with a whizz and a roar.
+
+"Here we go!" cried the young inventor, as the big machine shot forward
+on her flight. "Now let them stop us!"
+
+Forward she went until Ned, knowing by the speed that she had momentum
+enough, tilted the elevation rudder, and up she shot, while behind, on
+the ground, wildly running to and fro, and firing their rifles, were the
+two amazed guards.
+
+
+
+
+CHAPTER XXI
+
+THE RESCUE
+
+
+"Have we--have we time to get a drink?" gasped Ned, when the aeroplane,
+now on a level keel, had been shooting forward about three minutes.
+Already it was beyond the reach of the rifles.
+
+"Yes, but take only a little," cautioned Tom. "Oh! it doesn't seem
+possible that we are free!"
+
+He switched on a few interior lights, and by their glow the faint and
+starving platinum-seekers found water and food. Their craft had,
+apparently, not been touched in their absence, and the machinery ran
+well.
+
+Cautiously they ate and drank, feeling their strength come back to them,
+and then they removed the traces of their terrible imprisonment, and set
+about in ease and comfort, talking of what they had suffered.
+
+Onward sped the aeroplane, onward through the night, and then Tom,
+having set the automatic steering gear, all fell into heavy slumbers
+that lasted until far into the next day.
+
+When the young inventor awoke he looked below and could see
+nothing--nothing but a sea of mist.
+
+"What's this?" he cried. "Are we above the clouds, or in a fog over some
+inland sea?"
+
+He was quite worried, until Ivan Petrofsky informed him that they were
+in the midst of a dense fog, which was common over that part of Siberia,
+
+"But where are we?" asked Ned.
+
+"About over the province of Irtutsk," was the answer. "We are heading
+north," he went on, as he looked at the compass, "and I think about
+right to land somewhere near where my brother is confined in the sulphur
+mine."
+
+"That's so; we've got to drop," said Tom. "I must get the gas pipe
+repaired. I wish we could see over what soft of a place we were so as to
+know whether it would be safe to land. I wish the mist would clear
+away."
+
+It did, about noon, and they noted that they were over a desolate
+stretch of country, in which it would be safe to make a landing.
+
+Bringing the aeroplane down on as smooth a spot as he could pick out,
+Tom and Ned were soon at work clearing out the clogged pipe of the gas
+generator. They had to take it out in the open air, as the fumes were
+unpleasant, and it was while working over it that they saw a shadow
+thrown on the ground in front of them. Startled they looked up, to see a
+burly Russian staring at them.
+
+The sudden appearance of a man in that lonely spot, his calm regard of
+the lads, his stealthy approach, which had made it possible for him to
+be almost upon them before they were aware of his presence, all this
+made them suspicious of danger. Tom gave a quick glance about, however,
+and saw no others--no Cossack soldiers, and as he looked a second time
+at the man he noted that he was poorly dressed, that his shoes were
+ragged, his whole appearance denoting that he had traveled far, and was
+weary and ill.
+
+"What do you make of this, Ned?" asked Tom, in a low voice.
+
+"I don't know what to make of it. He can't be an officer, in that rig,
+and he has no one with him. I guess we haven't anything to be afraid of.
+I'm going to ask him what he wants."
+
+Which Tom did in his plainest English. At once the man broke into a
+stream of confused Russian, and he kept it up until Tom held up his hand
+for silence.
+
+"I'm sorry, but I can't understand you," said the young inventor. "I'll
+call some one who can, though," and, raising his voice, he summoned Ivan
+Petrofsky who, with Mr. Damon, was inside the airship doing some small
+repairs.
+
+"There's a Russian out here, Mr. Petrofsky," said Tom, "and what he
+wants I can't make out."
+
+The exile was quickly on the scene and, after a first glance at the man,
+hurried up to him, grasped him by the hand and at once the two were
+talking such a torrent of hard-sounding words that Tom and Ned looked at
+each other helplessly, while Mr. Damon, who had come out, exclaimed:
+
+"Bless my dictionary! they must know each other."
+
+For several minutes the two Russians kept up their rapid-fire talk and
+then Mr. Petrofsky, evidently realizing that his friends must wonder at
+it, turned to them and said:
+
+"This is a very strange thing. This man is an escaped convict, as I once
+was. I recognized him by certain signs as soon as I saw him, though I
+had never met him before. There are certain marks by which a Siberian
+exile can never be forgotten," he added significantly. "He made his
+escape from the mines some time ago, and has suffered great hardships
+since. The revolutionists help him when they can, but he has to keep in
+concealment and travels from town to town as best he may. He has heard
+of our airship, I suppose from inquiries the revolutionists have been
+making in our behalf, and when he unexpectedly came upon us just now he
+was not frightened, as an ordinary peasant would have been. But he did
+not know I was aboard."
+
+"And does he know you?" asked Tom. "Does he know you are trying to
+rescue your brother?"
+
+"No, but I will tell him."
+
+There was another exchange of the Russian language, and it seemed to
+have a surprising result. For, no sooner had Ivan Petrofsky mentioned
+his brother, than the other, whose name was Alexis Borious seemed
+greatly excited. Mr. Petrofsky was equally so at the reply his new
+acquaintance made, and fairly shouted to Tom, Ned and Mr. Damon.
+
+"Friends, I have unexpected good news! It is well that we met this man
+or we would have gone many miles out of our way. My brother has been
+moved to another mine since the revolutionists located him for me. He is
+in a lonely district many miles from here. This man was in the same mine
+with him, until my brother was transferred, and then Mr. Borious
+escaped. We will have to change our plans."
+
+"And where are we to head for now?" asked Tom.
+
+"Near to the town of Haskaski, where my poor brother is working in a
+sulphur mine!"
+
+"Then let's get a move on!" cried Tom with enthusiasm. "Do you think
+this man will come with us, Mr. Petrofsky, to help in the rescue, and
+show us the place?"
+
+"He says he will," translated the exile, "though he is much afraid of
+our strange craft. Still he knows that to trust himself to it is better
+than being captured, and sent back to the mines to starve to death!"
+
+"Good!" cried Tom. "And if he wants to, and all goes well, we'll take
+him out of Russia with us. Now get busy, Ned, and we'll have this
+machine in shape again soon."
+
+While Ivan Petrofsky took his new friend inside, and explained to him
+about the workings of the Falcon, Tom and Ned labored over the gas
+machine with such good effect that by night it was capable of being
+used. Then they went aloft, and making a change in their route, as
+suggested by Mr. Borious, they headed for the desolate sulphur region.
+
+For several days they sailed on, and gradually a plan of rescue was
+worked out. According to the information of the newcomer, the best way
+to save Mr. Petrofsky's brother was to make the attempt when the
+prisoners were marched back from the mines to the barracks where they
+were confined.
+
+"It will be dark then," said Mr. Borious, "and if you can hover in your
+airship near at hand, and if Mr. Petrofsky can call out to his brother
+to run to him, we can take him up with us and get away before the guards
+know what we are doing."
+
+"But aren't the prisoners chained?" asked Tom.
+
+"No, they depend on guards to prevent escapes."
+
+"Then we'll try that way," decided the young inventor.
+
+On and on they sailed, the Falcon working admirably. Verst after verst
+was covered, and finally, one morning, Mr. Borious, who knew the country
+well, from having once been a prisoner there, said:
+
+"We are now near the place. If we go any closer we may be observed. We
+had better remain hidden in some grove of trees so that at nightfall we
+can go forth to the rescue."
+
+"But how can we find it after dark?" asked Ned.
+
+"You can easily tell by the lights in the barracks," was the answer. "I
+can stand in the pilot house to direct you, for nearly all these exile
+prisons are alike. The prisoners will march in a long line from the
+mine. Then for the rescue."
+
+It was tedious waiting that day, but it had to be done, and to Tom, who
+was anxious to effect the rescue, and proceed to the place of the winds
+to try his air glider, it seemed as if dusk would never come as they
+remained in concealment.
+
+But night finally approached and then the great airship went silently
+aloft, ready to hover over the prison ground. Fortunately there was
+little wind; and she could be used as a balloon, thus avoiding the noise
+of the motor.
+
+"The next thing I do, when I get home," remarked Tom, as they drifted
+along. "Will be to make a silent airship. I think they would be very
+useful."
+
+With Mr. Borious in the pilot house, to point out the way, Tom steered
+through the fast-gathering darkness. The Russian had soon become used to
+the airship, and was not at all afraid.
+
+"Can you go just where you want to, as a balloon?" asked the new guide.
+
+"No, but almost," replied Tom. "At the last moment I've got to take a
+chance and start the motor to send us just where we want to go. That's
+why I think a silent airship would be a great thing. You could get up on
+the enemy before he knew it."
+
+"There are the prison barracks," said the guide a little later, his talk
+being translated by Mr. Petrofsky. Below and a little ahead of them
+could been seen a cluster of lights.
+
+"Yes, that looks like a line of prisoners," remarked Ned, who was
+peering through a pair of night glasses.
+
+"Where?" asked Tom eagerly, and they were pointed out to him. He took an
+observation, and exclaimed:
+
+"There they are, sure enough. Now if your brother is only among them,
+Mr. Petrofsky, we'll soon have him on board."
+
+"Heaven grant that he may be there!" said the exile in a low voice.
+
+A moment later, the Falcon, meanwhile having been allowed to drift as
+close as possible to the dimly-seen line of prisoners, Tom set in motion
+the great motor, the propeller blades heating the air fiercely.
+
+At the sound there was a shout on the ground below, but before the
+excitement had time to spread, or before any of the guards could form a
+notion of what was about to take place, Tom had sent his craft to earth
+on a sharp slant, closer to the line of prisoners than he had dared to
+hope.
+
+Mr. Petrofsky sprang out on deck, and in a loud voice called in Russian:
+
+"Peter! Peter! If you are there, come here! Come quickly! It is I, your
+brother Ivan who speaks. I have come to save you--save you in the
+wonderful airship of Tom Swift! Come quickly and we will take you away!
+Peter Petrofsky!"
+
+For a moment there was silence, and then the sound of some one running
+rapidly was borne to the ears of the waiting ones. It was followed, a
+moment later, by angry shouts from the guards.
+
+"Quick! Quick, Peter!" cried the brother, "over this way!"
+
+For an instant only the exile showed a single electric flash light, that
+his brother might see in which direction to run. The echo of the
+approaching footsteps came nearer, the shouts of the guards redoubled,
+and then came the sound of many men running in pursuit.
+
+"Hurry, Peter, hurry!" cried Mr. Petrofsky, and, as he spoke in Russian
+the guards, of course, understood.
+
+Suddenly a rifle shot rang out, but the weapon seemed to have been fired
+in the air. A moment later a dark figure clambered aboard the airship.
+
+"Peter, is it you?" cried Ivan Petrofsky, hoarsely.
+
+"Yes, brother! But get away quickly or the whole guard will be swarming
+about here!"
+
+"Praise the dear Lord you are saved!"
+
+"Is it all right?" cried Tom, who wanted to make sure they were saving
+the right man.
+
+"Yes! Yes, Tom! Go quickly!" called Ivan Petrofsky, as he folded his
+brother in his arms. A moment later, with a roar, the Falcon shot away
+from the earth, while below sounded angry cries, confused shouts and
+many orders, for the guards and their officers had never known of such a
+daring rescue as this.
+
+
+
+
+CHAPTER XXII
+
+IN THE HURRICANE
+
+
+There was a volley of shots from the prison guards, and the flashes of
+the rifles cut bright slivers of flame in the darkness, but, so rapidly
+did the airship go up, veering off on a wide slant, under the skillful
+guidance of Tom that the shots did no harm.
+
+"Bless my bullet pouch!" cried Mr. Damon. "They must be quite excited."
+
+"Shouldn't wonder," calmly observed Ned, as he went to help his chum in
+managing the airship. "But it won't do them any good. We've got our
+man."
+
+"And right from under their noses, too," added Ivan Petrofsky
+exultingly. "This rescue of an exile will go down in the history of
+Russia."
+
+The two exile brothers were gazing fondly at each other, for now that
+the Falcon was so high, Tom ventured to turn on the lights.
+
+A moment later the three Russians were excitedly conversing, while Tom
+and Ned managed the craft, and Mr. Damon, after listening a moment to
+the rapid flow of the strange language, which quite fascinated him,
+hurried to the galley to prepare a meal for the rescued one, who had
+been taken away before he had had a chance to get his supper.
+
+His wonder at his startling and unexpected rescue man well be imagined,
+but the joy at being reunited to his brother overshadowed everything for
+the time being. But when he had a chance to look about, and see what a
+strange craft he was in, his amazement knew no bounds, and he was like a
+child. He asked countless questions, and Ivan Petrofsky and Mr. Borious
+took turns in answering them. And from now on, I shall give the
+conversation of the two new Russians just as if they spoke English,
+though of course it had to be translated by Ivan Petrofsky, Peter's
+brother.
+
+If Peter was amazed at being rescued in an airship, his wonder grew when
+he was served with a well-cooked meal, while high in the air, and while
+flying along at the rate of fifty miles an hour. He could not talk
+enough about it.
+
+By degrees the story of how Tom and his friends had started for Russia
+was told, and there was added the detail of how Mr. Borious came to be
+picked up.
+
+"But brother Ivan, you did not come all that distance to rescue me; did
+you?" asked Peter.
+
+"Yes, partly, and partly to find the platinum mine."
+
+"What? The lost mine that you and I stumbled upon in that terrible
+storm?"
+
+"That is the one, Peter."
+
+"Then, Tom Swift may as well return. I doubt if we can even locate the
+district where it was, and if we did find it, the winds blow so that
+even this magnificent ship could not weather the gales."
+
+"I guess he doesn't understand about my air glider," said Tom with a
+smile, when this was translated to him. "I wish I had a chance to put it
+together, and show him how it works."
+
+"Oh, it will work all right," replied Ned, who was very proud of his
+friend's inventive ability.
+
+"Now, what is the next thing to be done?" asked Tom, a little later that
+evening, when, supper having been served, they were sitting in the main
+cabin, talking over the events of the past few days. "I'd like to get on
+the track of that platinum treasure."
+
+"And we will do all in our power to aid you," said Ivan Petrofsky. "My
+brother and I owe much to you--in fact Peter owes you his life; do you
+not?" and he turned to him.
+
+"I do," was the firm answer.
+
+"Oh, nonsense!" exclaimed Tom, who did not like to be praised. "I didn't
+do much."
+
+"Much! You do not call taking me away from that place--that sulphur
+mine--that horrible prison barrack with the cruel guards--you do not
+call that much? My, friend," spoke the Russian solemnly, "no one on
+earth has done so much for me as you have, and if it is the power of man
+to show you where that lost mine is, my brother and I will do so!"
+
+"Agreed," spoke Ivan quietly.
+
+"Then what plans shall we make?" asked Tom, after a little more talk.
+"Are we to go about indiscriminately, or is there any possible way of
+getting on the trail?"
+
+"My brother and I will try and decide on a definite route," spoke Ivan
+Petrofsky. "It is some time since I have seen him, and longer since we
+accidently found the mine together, but we will consult each other, and,
+if possible make some sort of a map."
+
+This was done the next day, the present maps aboard the Falcon being
+consulted, and the brothers comparing notes. They began to lay out a
+stretch of country in which it was most likely the lost mine lay. It
+took several days to do this, for sometimes one brother would forget
+some point, and again the other would. But at last they agreed on
+certain facts.
+
+"This is the nearest we can come to it," said Ivan Petrofsky to Tom.
+"The lost platinum mine lies somewhere between the city of Iakutsk and
+the first range of the Iablonnoi mountains. Those are the northern and
+southern boundaries. As for the western one, it is most likely the Lena
+river, and the eastern one the Amaga river. So you see you have quite a
+large stretch of country to search, Tom Swift."
+
+"Yes, I should say I had," agreed the young inventor. But I have had
+harder tasks. Now that I know where to head for I'll get there as soon
+as possible."
+
+"And what will you do when you arrive?" asked Ned.
+
+"Fly about in the Falcon, in ever-widening circles, starting as near the
+centre of that area as possible," replied Tom. "And as soon as I run
+into a steady hurricane I'll know that I'm at the place of the big
+winds, and I'll get out my glider, for I'll be pretty sure to be near
+the place."
+
+"Bless my gas meter!" cried Mr. Damon. "That's the talk!"
+
+Tom put his plan into operation at once, by heading the nose of his
+craft for the desolate region mapped out by the Russian brothers.
+
+The days that followed were filled with weary searching. It was like the
+time when they had sought for the plain of the great ruined Temple in
+Mexico, that they might locate the underground city of gold. Only in
+this case they had no such landmark as a great Aztec ruin to guide them.
+
+What they were seeking for was something unseen, but which could be
+felt--a mysterious wind--a wind that might be encountered any time, and
+which might send the Falcon to the earth a wreck.
+
+The Russian brothers, staggering about in the storm, had seen the mine
+under different conditions from what it would be viewed now. Then it was
+winter in Siberia. Now it was summer, though it was not very warm.
+
+On and on sailed the Falcon. The weather could not have been better, but
+for once Tom wanted bad weather. He wanted a blow--the harder the
+better--and all eyes anxiously watched the anemometer, or wind gage. But
+ever it revolved lazily about in the gentle breeze.
+
+"Oh, for a hurricane!" cried Tom.
+
+He got his wish sooner than he anticipated. It was about two days after
+this, when they were going about in a great circle, about two hundred
+miles from the imaginary centre of the district in which the mine lay,
+that, as Mr. Damon was getting dinner a dish he was carrying to the
+table was suddenly whisked out of his hand.
+
+"I say, what's the matter?" he cried. "Bless my--"
+
+But he had no time to say more. The airship fairly stood on end, and
+then, turning completely about, was rapidly driven in the opposite
+direction, though her propellers were working rapidly.
+
+"What's up?" yelled Ned.
+
+"We are capsizing!" shouted Ivan Petrofsky, and indeed it seemed so, for
+the airship was being forced over.
+
+"I guess we've struck what we want!" cried Tom. "We're in a hurricane
+all right! This is the place of the big wind! Now for my air glider, if
+I can get the airship to earth without being wrecked! Ned, lend a hand!
+We've got our work cut out for us now!"
+
+
+
+
+CHAPTER XXIII
+
+THE LOST MINE
+
+
+For several moments it seemed as if disaster would overtake the little
+band of platinum-hunters. In spite of all that Tom and Ned could do, the
+Falcon was whipped about like a feather in the wind. Sometimes she was
+pointing her nose to the clouds, and again earthward. Again she would be
+whirling about in the grip of the hurricane, like some fantastic dancer,
+and again she would roll dangerously. Had she turned turtle it probably
+would have been the last of her and of all on board.
+
+"Yank that deflecting lever as far down as it will go!" yelled Tom to
+his chum.
+
+"I am. She won't go any farther."
+
+"All right, hold her so. Mr. Damon, let all the gas out of the bag. I
+want to be as heavy as possible, and get to earth as soon as we can."
+
+"Bless my comb and brush!" cried the odd man. "I don't know what's going
+to become of us."
+
+"You will know, pretty soon, if the gas isn't let out!" retorted Tom
+grimly, and then Mr. Damon hastened to the generator compartment, and
+opened the emergency outlet.
+
+Finally, by crowding on all the possible power, so that the propellers
+and deflecting rudders forced the craft down, Tom was able to get out of
+the grip of the hurricane, and landed just beyond the zone of it on the
+ground.
+
+"Whew! That was a narrow squeak!" cried Ned, as he got out. "How'd you
+do it, Tom?"
+
+"I hardly know myself. But it's evident that we're on the right spot
+now."
+
+"But the wind has stopped blowing," said Mr. Damon. "It was only a
+gust."
+
+"It was the worst kind of a gust I ever want to see," declared the young
+inventor. "My air glider ought to work to perfection in that. If you
+think the wind has died out, Mr. Damon, just walk in that direction,"
+and Tom pointed off to the left.
+
+"Bless my umbrella, I will," was the reply and the odd man started off.
+He had not gone far, before he was seen to put his hand to his cap.
+Still he kept on.
+
+"He's getting into the blow-zone," said Tom in a low voice.
+
+The next moment Mr. Damon was seen to stagger and fall, while his cap
+was whisked from his head, and sent high into the air, almost instantly
+disappearing from sight.
+
+"Some wind that," murmured Ned, in rather awe-struck tones.
+
+"That's so," agreed his chum. "But we'd better help Mr. Damon," for that
+gentleman was slowly crawling back, not caring to trust himself on his
+feet, for the wind had actually carried him down by its force.
+
+"Bless my anemometer!" he gasped, when Tom and Ned had given him a hand
+up. "What happened?"
+
+"It was the great wind," explained Tom. "It blows only in a certain
+zone, like a draft down a chimney. It is like a cyclone, only that goes
+in a circle. This is a straight wind, but the path of it seems to be as
+sharply marked as a trail through the forest. I guess we're here all
+right. Does this location look familiar to you?" he asked of the Russian
+brothers.
+
+"I can't say that it does," answered Ivan. "But then it was winter when
+we were here."
+
+"And, another thing," put in Peter. "That wind zone is quite wide. The
+mine may be in the middle, or near the other edge."
+
+"That's so," agreed Tom. "We'll soon see what we can do. Come on, Ned,
+let's get the air glider out and put her together. She'll have a test as
+is a test, now."
+
+I shall not describe the tedious work of re-assembling Tom Swift's
+latest invention in the air craft line--his glider. Sufficient to say
+that it was taken out from where it had been stored in separate pieces
+on board the Falcon, and put together on the plain that marked the
+beginning of the wind zone.
+
+It was a curious fact that twenty feet away from the path of the wind
+scarcely a breeze could be felt, while to advance a little way into it
+meant that one would at once be almost carried off his feet.
+
+Tom tested the speed of it one day with a special anemometer, and found
+that only a few hundred feet inside the zone the wind blew nearly one
+hundred miles an hour.
+
+"What is it like inside, I wonder?" asked Ned.
+
+"It must be terrific," was his chum's opinion.
+
+"Dare you risk it, Tom?"
+
+"Of course. The harder it blows the better the glider works. In fact I
+can't make much speed in a hundred-mile wind for with us all on board
+the craft will be heavy, and you must remember that I depend on the wind
+alone to give me motion."
+
+"What do you think causes the wind to blow so peculiarly here Tom?" went
+on Ned.
+
+"Oh, it must be caused by high mountain ranges on either side, or the
+effects of heat and cold, the air being evaporated over a certain area
+because of great heat, say a volcano, or something like that; though I
+don't know that they have volcanoes here. That creates a vacuum, and
+other air rushes in to fill the vacant space. That's all wind is,
+anyhow, air rushing in to fill a vacuum, or low pressure zone, for you
+remember that nature abhors a vacuum."
+
+It took nearly a week to assemble the Vulture, as Tom had named his
+latest craft, from the fact that it could hover in the air motionless,
+like that great bird. At last it was completed and then, weights being
+taken aboard to steady it, all was ready for the test. Tom would have
+liked to have taken all his passengers in the glider, for it would work
+better then, but the three Russians were timid, though they promised to
+get aboard after the trial.
+
+The test came off early one morning, Tom, Ned and Mr. Damon being the
+only ones aboard. Bags of sand represented the others. The glider was
+wheeled to the edge of the wind zone and they took their places in the
+car. It was hard work for the gale, that had never ceased blowing for
+an instant since they found its zone, was very strong. But the glider
+remained motionless in it, for the wing planes, the rudders, and
+equalizing weights had been adjusted to make the strain of the wind
+neutral.
+
+"All ready?" asked Tom, when his chum and his friend were in the
+enclosed car of the glider.
+
+"As ready as I ever shall be," answered Ned.
+
+"Bless my suspenders! Let her go, Tom, and have it over with!" cried the
+odd man.
+
+The young inventor pulled a lever, and almost instantly the glider
+darted forward. A moment later it soared aloft, and the three Russians
+cheered. But their voices were lost in the roar of the hurricane, as Tom
+sent his craft higher and higher.
+
+It worked perfectly, and he could direct it almost anywhere. The wind
+acted as the motive power, the bending and warping wings, and the
+rudders and weights controlling its force.
+
+"I'm going higher, and see if I can remain stationary!" yelled Tom in
+Ned's ear. His chum only nodded. Mr. Damon was seated on a bench,
+clinging to the sides of it as if he feared he would fall off.
+
+Higher and higher went the Vulture, ever higher, until, all at once, Tom
+pulled on another lever and she was still. There she hung in the air,
+the wind rushing through her planes, but the glider herself as still and
+quiet as though she rested on the ground in a calm. She hardly moved a
+foot in either direction, and yet the wind, as evidenced by the
+anemometer was howling along at a hundred and twenty miles an hour!
+
+"Success!" cried Tom. "Success! Now we can lie stationary in any spot,
+and spy out the land through our telescope. Now we will find the lost
+platinum mine!"
+
+"Well, I'm not deaf," responded Ned with a smile, for Tom had fairly
+yelled as he had at the start, and there was no need of this now, for
+though the wind blew harder than ever it was not opposed to any of the
+weights or planes, and there was only a gentle humming sound as it
+rushed through the open spaces of the queer craft.
+
+Tom gave his glider other and more severe tests, and she answered every
+one. Then he came to earth.
+
+"Now we'll begin the search," he said, and preparations were made to
+that end. The Russians, now that they had seen how well the craft
+worked, were not afraid to trust themselves in her.
+
+As I have explained, there was an enclosed car, capable of holding six.
+In this were stores, supplies and food sufficient for several days.
+Tom's plan was to leave the airship anchored on the edge of the wind
+zone, as a sort of base of supplies or headquarters. From there he
+intended to go off from time to time in the wind-swept area to look for
+the lost mine.
+
+There were weary days that followed. Hour after hour was spent in the
+air in the glider, the whole party being aboard. Observation after
+observation was taken, sometimes a certain strata of wind enabling them
+to get close enough to the earth to use their eyes, while again they had
+to use the telescopes. They covered a wide section but as day after day
+passed, and they were no nearer their goal, even Tom optimistic as he
+usually was, began to have a tired and discouraged look.
+
+"Don't you see anything like the place where you found the mine?" he
+asked of the exile brothers.
+
+They could only shake their heads. Indeed their task was not easy, for
+to recognize the place again was difficult.
+
+More than a week passed. They had been back and forth to their base of
+supplies at the airship, often staying away over night, once remaining
+aloft all through the dark hours in the glider, in a fierce gale which
+prevented a landing. They ate and slept on board, and seldom descended
+unless at or near the place where they had left the Falcon. Once they
+completely crossed the zone of wind, and came to a calm place on the
+other side. It was as wild and desolate as the other edge.
+
+Nearly two weeks had passed, and Tom was almost ready to give up and go
+back home. He had at least accomplished part of his desire, to rescue
+the exile, and he had even done better than originally intended, for
+there was Mr. Borious who bad also been saved, and it was the intention
+of the young inventor to take him to the United States.
+
+"But the platinum treasure has me beat, I guess," said Tom grimly. "We
+can't seem to get a trace of it."
+
+Night was coming on, and he had half determined to head back for the
+airship. Ivan Petrofsky was peering anxiously down at the desolate land,
+over which they were gliding. He and his brother took turns at this.
+
+They were not far above the earth, but landmarks, such as had to be
+depended on to locate the mine, could not readily be observed without
+the glass. Mr. Damon, with a pair of ordinary field glasses, was doing
+all he could to pick out likely spots, though it was doubtful if he
+would know the place if he saw it.
+
+However, as chance willed it, he was instrumental in bringing the quest
+to a close, and most unexpectedly. Peter Petrofsky was relieving his
+brother at the telescope, when the odd man, who had not taken his eyes
+from the field glasses, suddenly uttered an exclamation.
+
+"Bless my tooth-brush!" he cried. "That's a most desolate place down
+there. A lot of trees blown down around a lake that looks as black as
+ink."
+
+"What's that!" cried Ivan Petrofsky. "A lake as black as ink? Where?"
+
+"We just passed it!" replied Mr. Damon.
+
+"Then put back there, as soon as you can, Tom!" called the Russian. "I
+want to look at that place."
+
+With a long, graceful sweep the young inventor sent the glider back over
+the course. Ivan Petrofsky glued his eyes to the telescope. He picked
+out the spot Mr. Damon had referred to, and a moment later cried:
+
+"That's it! That's near the lost platinum mine! We've found it again,
+Tom--everybody! Don't you remember, Peter," he said turning to his
+brother, "when we were lost in the snow we crawled in among a tangle of
+trees to get out of the blast. There was a sheet of white snow near
+them, and you broke through into water. I pulled you out. That must have
+been a lake, though it was lightly frozen over then. I believe this is
+the lost mine. Go down, Tom! Go down!"
+
+"I certainly will!" cried the youth, and pulling on the descending lever
+he shunted the glider to earth.
+
+
+
+
+CHAPTER XXIV
+
+THE LEAKING TANKS
+
+
+Like a bird descending from some dizzy height, the Vulture landed close
+to the pool of black water. It was a small lake and the darkness must
+have been caused by its depth, for later when they took some out in a
+glass it was as clear as a crystal. Then, too, there might have been
+black rocks on the bottom.
+
+"Can it he possible that we are here at last?" cried Tom, above the
+noise of the gale, for the wind was blowing at a terrific rate. But our
+friends knew better now how to adjust themselves to it, and the lake was
+down in a valley, the sides of which cut off the power of the gale. As
+for the glider it was only necessary to equalize the balance and it
+would remain stationary in any wind.
+
+"This is the place! This is the place!" cried Ivan Petrofsky. "Don't you
+remember, Peter?"
+
+"Indeed I do! I have good cause to! This is where we found the
+platinum!"
+
+"Bless my soul!" cried Mr. Damon. "Where is it, in the lake?"
+
+"The mine itself is just beyond that barrier of broken and twisted
+trees," replied the elder Russian brother. "It is an irregular opening
+in the ground, as though once, centuries ago, an ancient people tried to
+get out the precious metal. We will go to it at once."
+
+"But it is getting late," objected Ned.
+
+"No matter," said Tom. "If we find any platinum we'll stay here all
+night, and longer if necessary to get a good supply. This is better than
+the city of gold, for we're in the open."
+
+"I should say we were," observed Mr. Damon, as he bent to the blast,
+which was strong, sheltered even as they were.
+
+"Will it be safe to remain all night?" asked Mr. Borious, with a glance
+about the desolate country.
+
+"We have plenty of food," replied Tom, "and a good place to stay, in the
+car of the glider. I don't believe we'll be attacked."
+
+"No, not here," said the elder Petrofsky. "But we still have to go back
+across Siberia to escape."
+
+"We'll do it!" cried Tom. "Now for the platinum treasure!"
+
+They went forward, and it was no easy work. For the wind still New with
+tremendous force though nothing like what it did higher up. And the
+ground was uneven. They had to cling to each other and it was very
+evident that no airship, not even the powerful Falcon, could have
+reached the place. Only an air glider would answer.
+
+It took them half an hour to get to the opening of the ancient mine, and
+by that time it was nearly dark. But Tom had thought to bring electric
+torches, such as he had used in the underground city of gold, and they
+dispelled the gloom of the small cavern.
+
+"Will you go in?" asked Ivan Petrofsky, when they had come to the place.
+He looked at Tom.
+
+"Go in? Of course I'll go in!" cried our hero, stepping forward. The
+others followed. For some time they went on, and saw no traces of the
+precious metal. Then Ned uttered a cry, as he saw some dull, grayish
+particles imbedded in the earth walls of the shaft.
+
+"Look!" he cried.
+
+Tom was at his chum's side in a moment
+
+"That's platinum!" cried the young inventor. "And of the very highest
+grade! But the lumps are very small."
+
+"There are larger ones beyond," said the younger Russian brother.
+
+Forward they pressed, and a moment later coming around a turn in the
+cavern where some earth had fallen away, evidently recently, Tom could
+not repress a cry of joy. For there, in plain sight, were many large
+lumps of the valuable metal, in as pure a state as it is ever found. For
+it is always mixed with other metals or chemicals.
+
+"Look at that!" cried Tom. "Look at that! Lumps as large as an egg!" and
+he dug some out with a small pick he bad brought along, and stuffed them
+into his pocket.
+
+"Bless my check book!" cried Mr. Damon, "and that stuff is as valuable
+as gold!"
+
+"More so!" cried Tom enthusiastically.
+
+"Oh, here's a whopping big one!" cried Ned. I'll bet it weighs ten
+pounds."
+
+"More than that!" cried Tom, as he ran over and began digging it out,
+and they found later that it did. Platinum is usually found in small
+granules, but there are records of chunks being found weighing twenty
+pounds while others, the size of pigeons' eggs, are not uncommon.
+
+"Say, this is great!" yelled Ned, discovering another large piece, and
+digging it out.
+
+"I am glad we could lead you to it," said the elder Russian brother. "It
+is a small return for what you did for us!"
+
+"Nonsense!" cried Tom. "These must be a king's ransom here. Everybody
+dig it out! Get all you can."
+
+They were all busy, but the light of the two torches Tom had brought was
+not sufficient for good and efficient work, so after getting several
+thousand dollars worth of the precious metal, they decided to postpone
+operations until morning, and come with more lights.
+
+They were at the work soon after breakfast, the night in the air glider
+having passed without incident. The treasure of platinum proved even
+richer than the Russians had thought, and it was no wonder the Imperial
+government had tried so hard to locate it, or get on the trail of those
+who sought it.
+
+"And it's all good stuff!" cried Tom eagerly. "Not like that low-grade
+gold of the underground city. I can make my own terms when I sell this."
+
+For three days our friends dug and dug in that platinum mine, so many
+years lost to man, and when they got ready to leave they had indeed a
+king's ransom with them. But it was to be equally divided. Tom insisted
+on this, as his Russian friends had been instrumental in finding it.
+Toward the end of the excavation large pieces were scarce, and it was
+evident that the mine was what is called a "lode."
+
+"Well, shall we go back now?" asked Tom one day, after the finish of
+their mining operations. The work was comparatively simple, as the
+platinum lumps had merely to be dug out of the sides of the cave. But
+the loneliness and dreariness of the place was telling on them all.
+
+"Can't we carry any more?" asked Ned.
+
+"We could, but it might not be safe. I don't want to take on too much
+weight, as my glider isn't as stable as the airship. But we have plenty
+of the metal.
+
+"Indeed we have," agreed Ivan Petrofsky. "Much of mine and my brother's
+will go toward helping relieve the sufferings of the Siberian exiles,"
+he added.
+
+"And mine, too," said Alexis Borious.
+
+They started back early the next morning in a more terrific gale than in
+any the glider had yet flown. But she proved herself a stanch craft, and
+soon they were at the place where they had left the airship. It was
+undisturbed.
+
+Four days were spent in taking apart the glider and packing it on board
+the Falcon. Then, with the platinum safely stored away Tom, with a last
+look at the desolate land that had been so kind to them, sent his craft
+on her homeward way.
+
+It was when they were near the city of Pirtchina, on the Obi river, that
+what might have proved a disastrous accident occurred. They were flying
+along high, and at great speed, for Tom wanted to make all the distance
+he could, to get out of Siberia the more quickly. They had had a fair
+passage so far, and were congratulating themselves that they would soon
+be in civilization again.
+
+Suddenly, Mr. Damon, who had been on the after deck, taking observations
+through a telescope, came running forward, crying out:
+
+"Tom! Tom! What is that water dripping from the back part of the
+airship?"
+
+"Water?" exclaimed Tom. "No water is dripping from there."
+
+"Come and look," advised Mr. Damon.
+
+The young inventor raced back with him. He saw a thin, white stream
+trickling down from the lower part of the craft. Tom sniffed the air
+suspiciously.
+
+"Gasolene! It's gasolene!" he cried. "We must have a leak in the supply
+tanks!"
+
+He dashed toward the reserve storeroom, and at that moment, with a
+suddenness that was startling, the motor stopped and the Falcon lurched
+toward the earth.
+
+
+
+
+CHAPTER XXV
+
+HOMEWARD BOUND--CONCLUSION
+
+
+"All right!" yelled Ned, as soon as he heard Tom's cry. "I've got her
+under control. We'll volplane down."
+
+"Is it dangerous? Are we in danger?" asked Peter Petrofsky of his
+brother, in Russian.
+
+"I guess there's no danger, where Tom Swift's concerned," was the
+answer. "I have not volplaned much, but it will be all right I think."
+
+And it was, for with Ned Newton to guide the craft, while Tom did his
+best to stop the leak, the craft came gently to earth on the outskirts
+of a fairly large Siberian city. Almost instantly the Falcon was
+surrounded by a curious throng.
+
+"You had better keep inside," said Ivan Petrofsky to his brother and Mr.
+Borious. "Descriptions of you are probably out broadcast by now, but I
+am still sufficiently disguised, I think."
+
+"But what is to be done?" demanded the younger Russian brother. "If the
+gasolene is gone, how can we leave here?"
+
+"Trust Tom Swift for that," was the reply. "Keep out of sight now, there
+is a large crowd outside."
+
+Tom came from the tank room. There was a despondent look on his face.
+
+"It's all gone--every drop," he said. "That's what made the motor stop."
+
+"What's gone?" asked Mr. Damon.
+
+"The gasolene. We sprung a leak in the main tank, somehow, and it all
+flowed out while we were flying along."
+
+"Haven't you any more?"
+
+"Not a bit. I was drawing on the reserve tank, hoping to get to
+civilization before I needed more. But its too late now. We will have
+to--"
+
+"Bless my snow shoes!" cried Mr. Damon. "Don't say we'll have to stay
+here--in Siberia! Don't say that. My wife--"
+
+"No, we won't have to stay here if we can get a supply of kerosene,"
+interrupted Tom. "The motor will burn that. The only trouble is that we
+may be detained. The authorities probably know us by this time, and are
+on the watch."
+
+"Then get it before they know we are here," advised Ned.
+
+"I'll try," said Tom, and he at once conferred with the elder Petrofsky.
+The latter said he was sure kerosene could be had in town, and, rather
+than risk going in themselves, they hired a wagoner who agreed, for
+liberal pay, to go and return with a quantity. Until then there was
+nothing to do but wait.
+
+Meanwhile the crowd of curiosity seekers grew. They thronged around the
+airship, some of them meddling with various devices, until Tom had to
+order them away with gestures.
+
+One particularly inquisitive man insisted on pulling or twisting
+everything, until he happened to touch a couple of live wires, giving
+himself quite a shock, and then he ran away howling. But still the crowd
+increased, and at last Mr. Petrofsky said:
+
+"I don't like this, Tom?"
+
+"Why not?" They were all inside the craft, looking out and waiting for
+the return of the man with the kerosene. The leak in the tank had proved
+to be a small one, and had quickly been soldered. It had been open a
+long time, which accounted for the large amount of gasolene escaping.
+"What don't you like, Mr. Petrofsky?"
+
+"So many men surrounding us. I believe some of them are officers dressed
+in civilians' clothes, and a Russian officer never does that unless he
+has some object."
+
+"And you think the object is--?"
+
+"To capture us."
+
+"If it was that, wouldn't they have done it long ago--when we first came
+down?"
+
+"No, they are evidently waiting for something perhaps for some high
+official, without whose orders they dare do nothing. Russia is overrun
+with officialdom."
+
+And a little later Ivan Petrofsky's suspicion proved true. There arrived
+a man in uniform, who spoke fairly good English, and who politely asked
+Tom if he would not delay the start of the airship, again, until the
+governor could arrive from his country place to see it.
+
+"We know you are going to leave us," said the Russian with a smile, "for
+you have sent for kerosene. But please wait."
+
+"If your governor comes soon we'll wait," replied Tom. "But we are in a
+hurry. I wish that kerosene fellow would get a move on," he murmured.
+
+"Oh, he will doubtless be here soon," said the officer. "Might I be
+permitted to come aboard and wait for my chief?"
+
+"Sorry, but it's not allowed," replied our hero, straining his eyes down
+the road for a sight of the wagoner. At last he came, and Tom breathed
+easier.
+
+But the crowd was bigger, and some of the men, though poorly dressed,
+seemed to be persons in authority. Tom had no doubt but what there was a
+plot afoot to detain him, and arrest the exiles, and that there were
+disguised soldiers in the throng. But they could not act without the
+governor's orders, and he was probably on his way with all haste.
+
+"Lively now, get that kerosene in the tanks!" cried Tom to the man,
+motioning in lieu of using Russian. The youth was not going to meet the
+governor if he could help it.
+
+Now it was a curious thing, but the more that wagoner and his helpers
+seemed to try to hurry, and pour the oil from the cans into the
+tank-opening of the airship, the slower they worked. They got in each
+others' way, dropped some cans, spilled others, and in general made such
+poor work at it that Tom saw there was something in the wind.
+
+"Ned!" he exclaimed, "they're doing all they can to detain us. We've got
+to put that oil in ourselves. Just as we did the gasolene in France.
+It's the same sort of a delay game."
+
+"Right, Tom! I'm with you."
+
+"And I'll warn the crowd back, by telling them we are likely to blow up
+any minute!" added Ivan Petrofsky, which warning he shouted in Russian a
+moment later.
+
+Backward leaped the throng, as though a bomb bad been thrown into their
+midst, even the supposed officers joining in the retreat. The oil wagon
+was now easy of access, and Tom and Ned, with Mr. Damon to aid them,
+hastened toward it. Then the work of filling the tanks went on in
+something like good old, United States fashion.
+
+The last gallon of kerosene had been put aboard, and Tom and Ned with
+Mr. Damon, had climbed on deck, when the gaily uniformed officer, who
+had requested the delay, came riding up furiously.
+
+"Hold! Hold! If you please!" he cried. "The governor has come. He wants
+to see you."
+
+"Too late!" answered Tom. "Give him our best regards and ask him to some
+to the United States if he wants to see us. Sorry we haven't cards
+handy. Ned, take the pilot house, and shoot her up sharp when you get
+the signal. I'm going to run the motor. I don't know just how she'll
+behave on the kerosene."
+
+"You must remain!" angrily cried the officer.
+
+"The United States doesn't take 'must' from anybody, from the Czar
+down!" cried Tom as he disappeared into the motor room. The window was
+open, and the youth turned on the power the official cried again to him:
+
+"Halt! Here comes the governor! I declared you arrested by his orders,
+and in the name of the Czar!"
+
+"Nothing doing!" yelled Tom, and then, looking from the window, he saw
+approaching a troop of Cossacks, in the midst of whom rode a man in a
+brilliant uniform--evidently the governor.
+
+"Stop! Stop!" cried the official.
+
+"Here we go, Ned!" yelled Tom, and turning on more power the Falcon
+arose swiftly, before the very eyes of the angry governor, and his staff
+of Cossack soldiers.
+
+Up and up she went, faster and faster, the motors working well on the
+kerosene. Higher and higher. The governor and his soldiers were directly
+below her now.
+
+"Stop! Stop! You must stop. The Imperial governor orders it!" yelled the
+officer, evidently his Excellency's aide-de-camp.
+
+"We can't hear you!" shouted Tom, waving his hand from the motor room
+window, and then, turning on still more power he flew over the city,
+taking his friends and the valuable supply of platinum with him. So
+surprised were the soldiers that they did not fire a shot, but had they
+done so it is doubtful if much damage could have been done.
+
+"And now for home!" cried Tom, and homeward hound the Falcon was after a
+perilous trip through two storms. But she weathered them well.
+
+In due season they reached Paris again, and now, having no reason for
+concealment, they flew boldly down, to change what remained of the
+kerosene for gasolene, as the motor worked better on that. The secret
+police learned that the exiles were aboard, but they could do nothing,
+as the offenses were political ones, and so Tom kept his friends safe.
+
+Then they started on the long voyage across the Atlantic, and though
+they had one bad experience in a storm over that mighty ocean, they got
+safely home to Shopton in due season.
+
+There is little more to tell. The platinum proved to be even more
+valuable than Tom had expected. He could have sold it all for a large
+sum, but he preferred to keep most of what he had for his inventive
+work, and he used considerable of it in his machinery. Ned disposed of
+his, selling Tom some at a lower price than market quotations, and the
+Russians got a good price for theirs, turning the money into the fund to
+help their fellow exiles. Mr. Damon also made a good donation to the
+cause, as did Tom and Ned.
+
+Mr. Petrofsky and his brother, with the other exile, joined friends in
+New York, and promised to come and see Tom when they could.
+
+"Well, I suppose you'll take a long vacation now," said Mary Nestor, to
+Tom, when he called on her one evening to present her a unique ring,
+with the stones set in some of the platinum he had dug in the Siberian
+mine.
+
+"Vacation? I have no time for vacations!" said the young inventor. "I'm
+soon going to work on my silent airship, and on some other things I have
+in mind. I want more adventures."
+
+"Oh, you greedy boy!" exclaimed Mary with a laugh.
+
+And what adventures Tom had next will be found in the next book of this
+series, which will be entitled, "Tom Swift in Captivity; Or, a Daring
+Escape by Airship."
+
+Tom had several offers to give exhibitions in his air glider, from
+aviation committees at various meets, but he declined.
+
+"I haven't time," he declared. "I'm too busy."
+
+"You ought to rest," his chum Ned advised him.
+
+"'Bless my alarm clock!' as Mr. Damon would say," exclaimed Tom. "The
+best rest is new work," and then he began sketching his ideas for a
+silent motor craft, during which we will take leave of him for a while.
+
+
+
+
+
+End of Project Gutenberg's Etext of Tom Swift And His Air Glider
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+***Project Gutenberg's Etext of Tom Swift And His Air Glider***
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+Tom Swift And His Air Glider
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+by Victor Appleton
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+June, 1997 [Etext #952]
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+</pre>
+
+
+
+
+
+<h1>TOM SWIFT AND HIS AIR GLIDER</h1>
+
+<h3>or</h3>
+
+<h2>Seeking the Platinum Treasure</h2>
+
+
+<h3>By</h3>
+
+<h2>VICTOR APPLETON</h2>
+
+
+
+<h2><br /><br /><br /><br />CONTENTS</h2>
+
+<table border="0" cellpadding="4" cellspacing="0" summary="">
+<tr><td align='left'><a href="#CHAPTER_I">I</a></td><td align='left'>A Breakdown</td></tr>
+<tr><td align='left'><a href="#CHAPTER_II">II</a></td><td align='left'>A Daring Project</td></tr>
+<tr><td align='left'><a href="#CHAPTER_III">III</a></td><td align='left'>The Hand of the Czar</td></tr>
+<tr><td align='left'><a href="#CHAPTER_IV">IV</a></td><td align='left'>The Search</td></tr>
+<tr><td align='left'><a href="#CHAPTER_V">V</a></td><td align='left'>A Clew from Russia</td></tr>
+<tr><td align='left'><a href="#CHAPTER_VI">VI</a></td><td align='left'>Rescuing Mr. Petrofsky</td></tr>
+<tr><td align='left'><a href="#CHAPTER_VII">VII</a></td><td align='left'>The Air Glider</td></tr>
+<tr><td align='left'><a href="#CHAPTER_VIII">VIII</a></td><td align='left'>In a Great Gale</td></tr>
+<tr><td align='left'><a href="#CHAPTER_IX">IX</a></td><td align='left'>The Spies</td></tr>
+<tr><td align='left'><a href="#CHAPTER_X">X</a></td><td align='left'>Off in the Airship</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XI">XI</a></td><td align='left'>A Storm at Sea</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XII">XII</a></td><td align='left'>An Accident</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XIII">XIII</a></td><td align='left'>Seeking a Quarrel</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XIV">XIV</a></td><td align='left'>Hurried Flight</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XV">XV</a></td><td align='left'>Pursued</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XVI">XVI</a></td><td align='left'>The Nihilists</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XVII">XVII</a></td><td align='left'>On to Siberia</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XVIII">XVIII</a></td><td align='left'>In a Russian Prison</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XIX">XIX</a></td><td align='left'>Lost in a Salt Mine</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XX">XX</a></td><td align='left'>The Escape</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XXI">XXI</a></td><td align='left'>The Rescue</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XXII">XXII</a></td><td align='left'>In the Hurricane</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XXIII">XXIII</a></td><td align='left'>The Lost Mine</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XXIV">XXIV</a></td><td align='left'>The Leaking Tanks</td></tr>
+<tr><td align='left'><a href="#CHAPTER_XXV">XXV</a></td><td align='left'>Homeward Bound--Conclusion</td></tr></table>
+
+
+
+
+
+<hr style="width: 65%;" />
+<h2>TOM SWIFT AND HIS AIR GLIDER</h2>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_I" id="CHAPTER_I" />CHAPTER I</h2>
+
+<h3>A BREAKDOWN</h3>
+
+
+<p>&quot;Well, Ned, are you ready?&quot;</p>
+
+<p>&quot;Oh, I suppose so, Tom. As ready as I ever shall be.&quot;</p>
+
+<p>&quot;Why, Ned Newton, you're not getting afraid; are you? And after you've
+been on so many trips with me?&quot;</p>
+
+<p>&quot;No, it isn't exactly that, Tom. I'd go in a minute if you didn't have
+this new fangled thing on your airship. But how do you know how it's
+going to work&mdash;or whether it will work at all? We may come a cropper.&quot;</p>
+
+<p>&quot;Bless my insurance policy!&quot; exclaimed a man who was standing near the
+two lads who were conversing. &quot;You'd better keep near the ground, Tom.&quot;</p>
+
+<p>&quot;Oh, that's all right, Mr. Damon,&quot; answered Tom Swift. &quot;There isn't any
+more danger than there ever was, but I guess Ned is nervous since our
+trip to the underground city of gold.&quot;</p>
+
+<p>&quot;I am not!&quot; indignantly exclaimed the other lad, with a look at the
+young inventor. &quot;But you know yourself, Tom, that putting this new
+propeller on your airship, changing the wing tips, and re-gearing the
+motor has made an altogether different sort of a craft of it. You,
+yourself, said it wasn't as reliable as before, even though it does go
+faster.&quot;</p>
+
+<p>&quot;Now look here, Ned!&quot; burst out Tom. &quot;That was last week that I said it
+wasn't reliable. It is now, for I've tried it out several times, and
+yet, when I ask you to take a trip with me, to act as ballast&mdash;&quot;</p>
+
+<p>&quot;Is that all you want me for, Tom, to act as ballast? Then you'd better
+take a bag of sand&mdash;or Mr. Damon here!&quot;</p>
+
+<p>&quot;Me? I guess not! Bless my diamond ring! My wife hasn't forgiven me for
+going off on that last trip with you, Tom, and I'm not going to take any
+more right away. But I don't blame Ned&mdash;&quot;</p>
+
+<p>&quot;Say, look here!&quot; cried Tom, a little out of patience, &quot;you know me
+better than that, Ned. Of course your more than ballast&mdash;I want you to
+help me manage the craft since I made the changes on her. Now if you
+don't want to come, why say so, and I'll get Eradicate. I don't believe
+he'll be afraid, even if he&mdash;&quot;</p>
+
+<p>&quot;Hold on dar now, Massa Tom!&quot; exclaimed an aged colored man, who was an
+all around helper at the Swift homestead, &quot;was yo' referencin' t' me
+when yo' spoke?&quot;</p>
+
+<p>&quot;Yes, Rad, I was saying that if Ned wouldn't go up in the airship with
+me you would.&quot;</p>
+
+<p>&quot;Well, now, Masa Tom, I shorely would laik t' 'blige yo', I shore would.
+But de fack ob de mattah am dat I has a mos' particular job ob white
+washin' t' do dish mornin', an' I 'spects I'd better be gittin' at it.
+It's a mos' particular job, an', only fo' dat, I'd be mos' pleased t'
+go up in de airship. But as it am, I mus' ax yo' t' 'scuse me, I really
+mus',&quot; and the colored man shuffled off at a faster gait than he was in
+the habit of using.</p>
+
+<p>&quot;Well, of all things!&quot; gasped Tom. &quot;I believe you're all afraid of the
+old airship, just because I wade some changes in her. I'll go up alone,
+that's what I will.&quot;</p>
+
+<p>&quot;No, I'll go with you,&quot; interposed Ned Newton who was Tom's most
+particular chum. &quot;I only wanted to be sure it was all right, that was
+all.&quot;</p>
+
+<p>&quot;Well, if you've fully made up your mind,&quot; went on the young inventor, a
+little mollified, &quot;lend me a hand to get her in shape for a run. I
+expect to make faster time than I ever did before, and I'm going to head
+out Waterford way. You'd better come along, Mr. Damon, and I'll drop you
+off at your house.&quot;</p>
+
+<p>&quot;Bless my feather bed!&quot; gasped the man. &quot;Drop me off! I like that, Tom
+Swift!&quot;</p>
+
+<p>&quot;Oh, I didn't mean it exactly that way,&quot; laughed Tom. &quot;But will you
+come.&quot;</p>
+
+<p>&quot;No, thanks, I'm going home by trolley,&quot; and then as the odd man went in
+the house to speak to Tom's father, the two lads busied themselves about
+the airship.</p>
+
+<p>This was a large aeroplane, one of the largest Tom Swift had ever
+constructed, and he was a lad who had invented many kinds of machinery
+besides crafts for navigating the upper regions. It was not as large as
+his combined aeroplane and dirigible balloon of which I have told you in
+other books, but it was of sufficient size to carry three persons
+besides other weight.</p>
+
+<p>Tom had built it some years before, and it had seemed good enough then.
+Later he constructed some of different models, besides the big
+combination affair, and he had gone on several trips in that.</p>
+
+<p>He and his chum Ned, together with Eradicate Sampson, the colored man,
+and Mr. Damon, had been to a wonderful underground city of gold in
+Mexico, and it was soon after their return from this perilous trip that
+Tom had begun the work of changing his old aeroplane into a speedier
+craft.</p>
+
+<p>This had occupied him most of the Winter, and now that Spring had come
+he had a chance to try what a re-built motor, changed propellers, and
+different wing tips would do for the machine.</p>
+
+<p>The time had come for the test and, as we have seen, Tom had some
+difficulty in persuading anyone to go along with him? But Ned finally
+got over his feeling of nervousness.</p>
+
+<p>&quot;Understand, Tom,&quot; spoke Ned, &quot;it isn't because I don't think you know
+how to work an aeroplane that I hesitated. I've been up in the air with
+you enough times to know that you're there with the goods, but I don't
+believe even you know what this machine is going to do.&quot;</p>
+
+<p>&quot;I can pretty nearly tell. I'm sure my theory is right.&quot;</p>
+
+<p>&quot;I don't doubt that. But will it work out in practice?&quot;</p>
+
+<p>&quot;She may not make all the speed I hope she will, and I may not be able
+to push her high into the air quicker than I used to before I made the
+changes,&quot; admitted Tom, &quot;but I'm sure of one thing. She'll fly, and she
+won't come down until I'm ready to let her. So you needn't worry about
+getting hurt.&quot;</p>
+
+<p>&quot;All right&mdash;if you say so. Now what do you want me to do, Tom?&quot;</p>
+
+<p>&quot;Go over the wire guys and stays for the first thing. There's going to
+be lots of vibration, with the re-built motor, and I want everything
+tight.&quot;</p>
+
+<p>&quot;Aye, aye, sir!&quot; answered Ned with a laugh.</p>
+
+<p>Then he set at his task, tightening the small nuts, and screwing up the
+turn-buckles, while Tom busied himself over the motor. There was some
+small trouble with the carburetor that needed eliminating before it
+would feed properly.</p>
+
+<p>&quot;How about the tires?&quot; asked Ned, when he had finished the wires.</p>
+
+<p>&quot;You might pump them up. There, the motor is all right. I'm going to try
+it now, while you attend to the tires.&quot;</p>
+
+<p>Ned had pumped up one of the rubber circlets of the small bicycle wheels
+on which the aeroplane rested, and was beginning on the second, when a
+noise like a battery of machine guns going off next to his ear startled
+him so that he jumped, tripped over a stone and went down, the air pump
+thumping him in the back.</p>
+
+<p>&quot;What in the world happened, Tom?&quot; he yelled, for he had to use all his
+lung power to be heard above that racket. &quot;Did it explode?&quot;</p>
+
+<p>&quot;Explode nothing!&quot; shouted Tom. &quot;That's the re-built motor in action.&quot;</p>
+
+<p>&quot;In action! I should say it was in action. Is it always going to roar
+like that?&quot;</p>
+
+<p>Indeed the motor was roaring away, spitting fire and burnt gases from
+the exhaust pipe, and enveloping the aeroplane in a whitish haze of
+choking smoke.</p>
+
+<p>No, I have the muffler cut out, and that's why she barks so. But she
+runs easier that way, and I want to get her smoothed out a bit.</p>
+
+<p>&quot;Whew! That smoke!&quot; gasped his chum. &quot;Why don't you&mdash;whew&mdash;this is more
+than I can stand,&quot; and holding his hands to his smarting eyes, Ned,
+gasping and choking, staggered away to where the air was better.</p>
+
+<p>&quot;It is sort of thick,&quot; admitted Tom. &quot;But that's only because she's
+getting too much oil. She'll clear in a few minutes. Stick around and
+we'll go up.&quot;</p>
+
+<p>Despite the choking vapor, the young inventor stuck to his task of
+regulating the motor, and in a short while the smoke became less, while
+the big propeller blades whirled about more evenly. Then Tom adjusted
+the muffler, and most of the noise stopped.</p>
+
+<p>&quot;Come on back, and finish pumping up the tires,&quot; he shouted to Ned. &quot;I'm
+going to stop her now, and then I'll give her the pressure test, and
+we'll take a trip.&quot;</p>
+
+<p>Having cleared his eyes of smoke, Ned came back to his task, and this
+having been finished, Tom attached a heavy spring balance, or scales, to
+the rope that held the airship back from moving when her propellers were
+whirling about.</p>
+
+<p>&quot;How much pressure do you want?&quot; asked Ned.</p>
+
+<p>&quot;I ought to get above twelve hundred With the way the motor is geared,
+but I'll go up with ten. Watch the needle for me.&quot;</p>
+
+<p>It may be explained that when aeroplanes are tested on the earth the
+propellers are set in motion. This of course would send a craft whizzing
+over the ground, eventually to rise in the air, but for the fact that a
+rope, attached to the craft, and to some stationary object, holds it
+back.</p>
+
+<p>Now if this rope is hooked to a spring balance, which in turn is made
+fast to the stationary object, the &quot;thrust&quot; of the propellers will be
+registered in pounds on the scale of the balance. Anywhere from five
+hundred to nine hundred pounds of thrust will take a monoplane or
+biplane up. But Tom wanted more than this.</p>
+
+<p>Once more the motor coughed and spluttered, and the big blades whirled
+about so fast that they seemed like solid pieces of wood. Tom stood on
+the ground near the levers which controlled the speed, and Ned watched
+the scale.</p>
+
+<p>&quot;How much?&quot; yelled the young inventor.</p>
+
+<p>&quot;Eight hundred.&quot;</p>
+
+<p>Tom turned on a little more gasolene.</p>
+
+<p>&quot;How much?&quot; he cried again.</p>
+
+<p>&quot;Ten hundred. That'll do!&quot;</p>
+
+<p>&quot;No, I'm going to try for more.&quot;</p>
+
+<p>Again he advanced the spark and gasolene levers, and the comparatively
+frail craft vibrated so that it seemed as if she would fly apart.</p>
+
+<p>&quot;Now?&quot; yelled Tom.</p>
+
+<p>&quot;Eleven hundred and fifty!&quot; cried Ned.</p>
+
+<p>&quot;Good! That'll do it. She'll give more after she's been running a while.
+We'll go up.&quot;</p>
+
+<p>Ned scrambled to his seat, and Tom followed. He had an arrangement so
+that he could slip loose the retaining rope from his perch whenever he
+was ready.</p>
+
+<p>Waiting until the motor had run another minute, the young inventor
+pulled the rope that released them. Over the smooth starting ground that
+formed a part of the Swift homestead darted the aeroplane. Faster and
+faster she moved, Ned gripping the sides of his seat.</p>
+
+<p>&quot;Here we go!&quot; cried Tom, and the next instant they shot up into the air.</p>
+
+<p>Ned Newton had ridden many times with his chum Tom, and the sensation of
+gliding through the upper regions was not new to him. But this time
+there was something different. The propellers seemed to take hold of the
+air with a firmer grip. There was more power, and certainly the speed
+was terrific.</p>
+
+<p>&quot;We're going fast!&quot; yelled Ned into Tom's ear.</p>
+
+<p>&quot;That's right,&quot; agreed the young inventor. &quot;She'll beat anything but my
+Sky Racer, and she'd do that if she was the same size.&quot; Tom referred to
+a very small aeroplane he had made some time before. It was like some
+big bird, and very swift.</p>
+
+<p>Up and onward went the remodeled airship, faster and faster, until, when
+several miles had been covered, Ned realized that the young inventor had
+achieved another triumph.</p>
+
+<p>&quot;It's great, Tom! Great!&quot; he yelled.</p>
+
+<p>&quot;Yes, I guess it will do, Ned. I'm satisfied. If there was an
+international meet now I'd capture some of the prizes. As it is&mdash;&quot;</p>
+
+<p>Tom stopped suddenly. His voice which had been raised to overcome the
+noise of even the muffled motor, sounded unnaturally loud, and no
+wonder, for the engine had ceased working!</p>
+
+<p>&quot;What's the matter?&quot; gasped Ned.</p>
+
+<p>&quot;I don't know&mdash;a breakdown of some kind.&quot;</p>
+
+<p>&quot;Can you get it going again?&quot;</p>
+
+<p>&quot;I'm going to try.&quot;</p>
+
+<p>Tom was manipulating various levers, but with no effect. The aeroplane
+was shooting downward with frightful rapidity.</p>
+
+<p>&quot;No use!&quot; exclaimed the young inventor. &quot;Something has broken.&quot;</p>
+
+<p>&quot;But We're falling, Tom!&quot;</p>
+
+<p>&quot;I know it. We've done it before. I'm going to volplane to earth.&quot;</p>
+
+<p>This, it may be explained, is gliding downward from a height with the
+engine shut off. Aeroplanists often do it, and Tom was no novice at the
+art.</p>
+
+<p>They shot downward with less speed now, for the young inventor had
+thrown up his headplanes to act as a sort of brake. Then, a little later
+they made a good landing in a field near a small house, in a rather
+lonely stretch of country, about ten miles from Shopton, where Tom
+lived.</p>
+
+<p>&quot;Now to see what the trouble is,&quot; remarked our hero, as he climbed out
+of his seat and began looking over the engine. He poked in among the
+numerous cogs, wheels and levers, and finally uttered an exclamation.</p>
+
+<p>&quot;Find it?&quot; asked Ned.</p>
+
+<p>&quot;Yes, it's in the magneto. All the platinum bearings and contact
+surfaces have fused and crystallized. I never saw such poor platinum as
+I've been getting lately, and I pay the highest prices for it, too. The
+trouble is that the supply of platinum is giving out, and they'll have
+to find a substitute I guess.&quot;</p>
+
+<p>&quot;Can't we go home in her?&quot; asked Ned.</p>
+
+<p>&quot;I'm afraid not. I've got to put in new platinum bearings and contacts
+before she'll spark. I only wish I could get hold of some of the better
+kind of metal.&quot;</p>
+
+<p>The magneto of an aeroplane performs a service similar to one in an
+automobile. It provides the spark that explodes the charge of gas in the
+cylinders, and platinum is a metal, more valuable now than gold, much
+used in the delicate parts of the magneto.</p>
+
+<p>&quot;Well, I guess it's walk for ours,&quot; said Ned ruefully.</p>
+
+<p>&quot;I'm afraid so,&quot; went on Tom. &quot;If I only had some platinum, I could&mdash;&quot;</p>
+
+<p>&quot;Perhaps I could be of service to you,&quot; suddenly spoke a voice behind
+them, and turning, the youths saw a tall, bearded man, who had evidently
+come from the lonely house. &quot;Did I hear you say you needed some
+platinum?&quot; he asked. He spoke with a foreign accent, and Tom at once put
+him down for a Russian.</p>
+
+<p>&quot;Yes, I need some for my magneto,&quot; began the young inventor.</p>
+
+<p>&quot;If you will kindly step up to my house, perhaps I can give you what you
+want,&quot; went on the man. &quot;My name is Ivan Petrofsky, and I have only
+lately come to live here.&quot;</p>
+
+<p>&quot;I'm Tom Swift, of Shopton, and this is my chum, Ned Newton,&quot; replied
+the young inventor, completing the introductions. He was wondering why
+the man, who seemed a cultured gentleman, should live in such a lonely
+place, and he was wondering too how he happened to have some platinum.</p>
+
+<p>&quot;Will that answer?&quot; asked Mr. Petrofsky, when they had reached his
+house, and he had handed Tom several strips of the precious silverlike
+metal.</p>
+
+<p>&quot;Do? I should say it would! My, but that is the best platinum I've seen
+in a long while!&quot; exclaimed Tom, who was an expert judge of this metal.
+&quot;Where did you get it, if I may ask?&quot;</p>
+
+<p>&quot;It came from a lost mine in Siberia,&quot; was the unexpected answer.</p>
+
+<p>&quot;A lost mine?&quot; gasped Tom.</p>
+
+<p>&quot;In Siberia?&quot; added Ned.</p>
+
+<p>Mr. Petrofsky slowly nodded his head, and smiled, but rather sadly.</p>
+
+<p>&quot;A lost mine,&quot; he said slowly, &quot;and if it could be found I would be the
+happiest man on earth for I would then be able to locate and save my
+brother, who is one of the Czar's exiles,&quot; and he seemed shaken by
+emotion.</p>
+
+<p>Tom and Ned stood looking at the bearded man, and then the young
+inventor glanced at the platinum strips in his hand while a strange and
+daring thought came to him.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_II" id="CHAPTER_II" />CHAPTER II</h2>
+
+<h3>A DARING PROJECT</h3>
+
+
+<p>While Tom and his chum are in the house of the Russian, who so strangely
+produced the platinum just when it was most needed, I am going to take
+just a little time to tell you something about the hero of this story.
+Those who have read the previous books of this series need no
+introduction to him, but in justice to my new readers I must make a
+little explanation.</p>
+
+<p>Tom Swift was an inventor, as was his father before him. But Mr. Swift
+was getting too old, now, to do much, though he had a pet
+invention&mdash;that of a gyroscope&mdash;on which he worked from time to time.
+Tom lived with his father in the village of Shopton, in New York state.
+His mother was dead, but a housekeeper, named Mrs. Baggert, looked after
+the wants of the inventors, young and old.</p>
+
+<p>The first book of the series was called &quot;Tom Swift and His Motor-Cycle,&quot;
+and in that I related how Tom bought the machine from a Mr. Wakefield
+Damon, of Waterford, after the odd gentleman had unintentionally started
+to climb a tree with it. That disgusted Mr. Damon with motor-cycling,
+and Tom had lots of fun on the machine, and not a few daring adventures.</p>
+
+<p>He and Mr. Damon became firm friends, and the oddity of the
+gentleman&mdash;mainly that of blessing everything he could think of&mdash;was no
+objection in Tom's mind. The young inventor and Ned Newton went on many
+trips together, Mr. Damon being one of the party.</p>
+
+<p>In Shopton lived Andy Foger, a bullying sort of a chap, who acted very
+meanly toward Tom at times. Another resident of the town was a Mr.
+Nestor, but Tom was more interested in his daughter Mary than in the
+head of the household. Add Eradicate Sampson, an eccentric colored man
+who said he got his name because he &quot;eradicated&quot; dirt, and his mule,
+Boomerang, and I think you have met the principal characters of these
+stories.</p>
+
+<p>After Tom had much enjoyment out of his motor-cycle, he got a motor
+boat, and one of his rivals on Lake Carlopa was this same Andy Foger,
+but our hero vanquished him. Then Tom built an airship, which had been
+the height of his ambition for some years. He had a stirring cruise in
+the Red Cloud, and then, deserting the air for the water, Tom and his
+father built a submarine, in which they went after sunken treasure. In
+the book, &quot;Tom Swift and His Electric Runabout,&quot; I told how, in the
+speediest car on the road, Tom saved his father's bank from ruin, and in
+the book dealing with Tom's wireless message I related how he saved the
+Castaways of Earthquake Island.</p>
+
+<p>When Tom went among the diamond makers, at the request of Mr. Barco
+Jenks, and discovered the secret of phantom mountain the lad fancied
+that might be the end of his adventures, but there were more to follow.
+Going to the caves of ice, his airship was wrecked, but he and his
+friends managed to get back home, and then it was that the young
+inventor perfected his sky racer, in which he made the quickest flight
+on record.</p>
+
+<p>Most startling were his adventures in elephant land whither he went with
+his electric rifle, and he was the means of saving a missionary, Mr.
+Illingway and his wife, from the red pygmies.</p>
+
+<p>Tom had not been home from Africa long before he got a letter from this
+missionary, telling about an underground City in Mexico that was said to
+be filled with gold. Tom went there, and in the book, entitled, &quot;Tom
+Swift in the City of Gold,&quot; I related his adventures.</p>
+
+<p>How he and his friends were followed by the Fogers, how they eluded
+them, made their way to the ruined temple in a small dirigible balloon,
+descended to the secret tunnel, managed to turn aside the underground
+river, and reach the city of gold with its wonderful gold statues&mdash;all
+this is told in the volume.</p>
+
+<p>Then, after pulling down, in the centre of the underground city, the big
+golden statue, the door of rock descended, and made our friends
+prisoners. They almost died, but Andy Foger and his father, in league
+with some rascally Mexicans and a tribe of head-hunters, finally made
+their way to the tunnel, and most unexpectedly, released Tom and his
+friends.</p>
+
+<p>There was a fight, but our hero's party escaped with considerable gold
+and safely reached Shopton. Now, after a winter spent in work, fixing
+over an old aeroplane, we again meet Tom.</p>
+
+<p>&quot;Would you mind telling me something about where this platinum comes
+from, and if you can get any more of it?&quot; asked Tom, after a pause,
+following the strange statement made by the Russian.</p>
+
+<p>&quot;I will gladly tell you the story,&quot; spoke Mr. Petrofsky, &quot;for I am much
+interested in inventions, and I formerly did something in that line
+myself, and I have even made a small aeroplane, so you see I know the
+need of platinum in a high power magneto.&quot;</p>
+
+<p>&quot;But where did you get such pure metal?&quot; asked Tom. &quot;I have never seen
+it's equal.&quot;</p>
+
+<p>&quot;There is none like it in all the world,&quot; went on the Russian, &quot;and
+perhaps there never can be any more. I have only a small supply. But in
+Siberia&mdash;in the lost mine&mdash;there is a large quantity of it, as pure as
+this, needing only a little refining.</p>
+
+<p>&quot;Can't we get some from there?&quot; asked the young inventor eagerly. &quot;I
+should think the Russian government would mine it, and export it.&quot;</p>
+
+<p>&quot;They would&mdash;if they could find it,&quot; said Ivan Petrofsky dryly, &quot;but
+they can't&mdash;no one can find it&mdash;and I have tried very hard&mdash;so hard, in
+fact, that it is the reason for my coming to this country&mdash;that and the
+desire to find and aid my brother, who is a Siberian exile.&quot;</p>
+
+<p>&quot;This is getting interesting,&quot; remarked Ned to Tom in a low voice, and
+the young inventor nodded.</p>
+
+<p>&quot;My brother Peter, who is younger than I by a few years, and I, are the
+last of our family,&quot; began Mr. Petrofsky, motioning Tom and Ned to take
+chairs. &quot;We lived in St. Petersburg, and early in life, though we were
+of the nobility, we took up the cause of the common people.&quot;</p>
+
+<p>&quot;Nihilists?&quot; asked Ned eagerly, for he had read something of these
+desperate men.</p>
+
+<p>&quot;No, and not anarchists,&quot; said Mr. Petrofsky with a sad smile. &quot;Our
+party was opposed to violence, and we depended on education to aid our
+cause. Then, too, we did all we could in a quiet way to help the poor.
+My brother and I invented several life-saving and labor-saving machines
+and in this way we incurred the enmity of the rich contractors and
+government officials, who made more money the more people they could
+have working for them, for they made the people buy their food and
+supplies from them.</p>
+
+<p>&quot;But my brother, and I persisted, with the result that we were both
+arrested, and, with a number of others were sent to Siberia.</p>
+
+<p>&quot;Of the horrors we endured there I will say nothing. However, you have
+probably read much. In the country near which we were quartered there
+were many mines, some of salt and some of sulphur. Oh, the horrors of
+those mines! Many a poor exile has been lost in the windings of a salt
+mine, there to die miserably. And in the sulphur mines many die also,
+not from being lost so much as being overcome by stifling gases. It is
+terrible! And sometimes they are purposely abandoned by their guides,
+for the government wants to get rid of certain exiles.</p>
+
+<p>&quot;But you are interested in platinum. One day my brother and I who had
+been sent to work in the salt mines, mistook a turning and wandered on
+and on for several miles, finally losing our way. We had food and water
+with us, or we would have perished, and, as it was, we nearly died
+before we finally found our way out of an abandoned opening.</p>
+
+<p>&quot;We came out in the midst of a terrible snowstorm, and wandered about
+almost frozen. At last we were found by a serf who, in his sled, took us
+to his poor cottage. There we were warmed and fed back to life.</p>
+
+<p>&quot;We knew we would be searched for, as naturally, our absence would lead
+to the suspicion that we had tried to escape. So as soon as we were
+able, we started back to the town where we were quartered. The serf
+wanted to take us in his sled, but we knew he might be suspected of
+having tried to aid us to get away, and he might be arrested. So we went
+alone.</p>
+
+<p>&quot;As might have been expected, we became lost again, and wandered about
+for several days. But we had enough food to keep us alive. And it was
+during this wandering that I came upon the platinum mine. It was down in
+a valley, in the midst of a country densely wooded and very desolate.
+There was an outcropping of the ore, and rather idly I put some of it in
+my pockets. Then we wandered on, and finally after awful suffering in
+terrific storms, were found by a searching party and brought back to the
+barracks.&quot;</p>
+
+<p>&quot;Did they think you had escaped?&quot; asked Tom.</p>
+
+<p>&quot;They did,&quot; replied the Russian, &quot;and they punished us severely for it,
+in spite of our denials. In time I managed secretly to smelt the
+platinum ore, and I found I had some of the purest metal I had ever
+seen. I was wishing I could find the mine, or tell some of my friends
+about it, when one of the officers discovered the metal in my bed.</p>
+
+<p>&quot;He demanded to know where I had gotten it, and knowing that refusal
+would only make it the worse for me I told him. There was considerable
+excitement, for the value of the discovery was recognized, and a search
+was at once made for the mine.</p>
+
+<p>&quot;But, even with the aid we were able to give, it could not be located.
+Many expeditions went out to hunt for it but came back baffled. They
+could not penetrate that wild country.&quot;</p>
+
+<p>&quot;They should have used an aeroplane,&quot; suggested Tom.</p>
+
+<p>&quot;They did,&quot; replied the Russian quickly, &quot;but it was of no use.&quot;</p>
+
+<p>&quot;Why not?&quot; the young inventor wanted to know.</p>
+
+<p>&quot;Because of the terrific winds that almost continually sweep over that
+part of Siberia. They never seem to cease, and there are treacherous air
+currents and 'pockets' that engulfed more than one luckless aviator. Oh,
+you may be sure the Russian government spared no means of finding the
+lost platinum mine, but they could not locate it, or even get near the
+place where they supposed it to be.</p>
+
+<p>&quot;Then, perhaps thinking that my brother and I were concealing something,
+they separated us. Where they sent him I do not know, but I was doomed
+to the sulphur mines. I was heartbroken, and I scarcely cared whether I
+lived or died. But an opportunity of escape came, and I took it. I
+wanted to save my brother, but I did not know where he was, and I
+thought if I could make my way to some civilized country, or to free
+America, I might later be able to save my brother.</p>
+
+<p>&quot;I went to England, taking some of my precious platinum with me, and
+stayed there for two years. I learned your language, but my efforts to
+organize an expedition to search for the lost mine, and for my brother,
+failed. Then I came here, and&mdash;well, I am still trying.&quot;</p>
+
+<p>&quot;My! That is certainly interesting!&quot; exclaimed Ned, who had been all
+attention during the telling of the story.</p>
+
+<p>&quot;And you certainly had a hard time,&quot; declared Tom. &quot;I am much obliged
+for this platinum. Have you set a price on it? It is worth much more
+than the ordinary kind.&quot;</p>
+
+<p>&quot;The price is nothing to you,&quot; replied the Russian, with a smile. &quot;I am
+only too glad to help you fix your aeroplane. Will it take long? I
+should like to watch you.&quot;</p>
+
+<p>&quot;Come along,&quot; invited Tom. &quot;I can soon have it going again, and I'll
+give you a ride, if you like.&quot;</p>
+
+<p>&quot;No, thank you, I'm hardly up to that yet, though I may be some day. The
+machine I made never flew well and I had several bad falls.&quot;</p>
+
+<p>Tom and Ned worked rapidly on the magneto, and soon had replaced the
+defective bits of platinum.</p>
+
+<p>&quot;If the Russians had such a machine as this maybe they could have gotten
+to that mine,&quot; suggested Ned, who was very proud of Tom's craft.</p>
+
+<p>&quot;It would be useless in the terrific winds, I fear,&quot; answered Ivan
+Petrofsky. &quot;But now I care little for the mine. It is my brother whom I
+want to save. He must be in some of the Siberian mines, and if I had
+such a craft as this I might be able to rescue him.&quot;</p>
+
+<p>Tom Swift dropped the file he was using. A bright light sparkled in his
+eyes. He seemed strangely excited.</p>
+
+<p>&quot;Mr. Petrofsky!&quot; he cried, &quot;would you let me have a try at finding your
+brother, and would you come with me?&quot;</p>
+
+<p>&quot;Would I?&quot; asked the Russian eagerly. &quot;I would be your debtor for life,
+and I would always pray for you, if you could help me to save my brother
+Peter.&quot;</p>
+
+<p>&quot;Then we'll have a try at it!&quot; cried Tom. &quot;I've got a different airship
+than this&mdash;one in which I can travel three thousand miles without coming
+down. I haven't had any excitement since I got back from the city of
+gold. I'm going to Russia to help you rescue your brother from exile,
+and I'm also going to have a try for that lost platinum treasure!&quot;</p>
+
+<p>&quot;Thank heaven, there is some hope for poor Peter at last,&quot; murmured Mr.
+Petrofsky earnestly.</p>
+
+<p>&quot;You never can get to the platinum mine,&quot; said Ned. The winds will tear
+your airship to pieces.&quot;</p>
+
+<p>&quot;Not the kind I'm going to make,&quot; declared Tom. &quot;It's going to be an air
+glider, that will fairly live on high winds. Ho! for Siberia and the
+platinum mines. Will you come?&quot;</p>
+
+<p>&quot;I don't know what you mean by an air glider, Tom Swift, but I'll go to
+help rescue my brother,&quot; was the quick answer, and then, with the light
+of a daring resolve shining in his eyes, the young inventor proceeded to
+get his aeroplane in shape for the trip back to Shopton.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_III" id="CHAPTER_III" />CHAPTER III</h2>
+
+<h3>THE HAND OF THE CZAR</h3>
+
+
+<p>&quot;Then you won't take a ride with me to-day?&quot; asked the young inventor, of
+the Russian, as he completed the repairs to the magneto. &quot;I'd like to
+have you meet my father, and a friend of his, Mr. Damon. Most likely
+he'll go to Siberia with us, if his wife will let him. I'd like to talk
+some plans over with you.&quot;</p>
+
+<p>&quot;I shall certainly call on you,&quot; answered Ivan Petrofsky, &quot;but,&quot; he
+added with a smile, &quot;I think I should prefer to take my first ride in
+your larger airship&mdash;the one that doesn't come down so often.&quot;</p>
+
+<p>&quot;Well, perhaps it is a little easier on an amateur,&quot; admitted Tom. &quot;If
+you'll come over to our house at any time I'll take you out in it, or
+I'll call for you.&quot;</p>
+
+<p>&quot;I'll come over in a few days,&quot; answered the escaped exile. &quot;Then I'll
+tell you all I know of the locality where the platinum mine is located,
+and we can make our plans. In the meanwhile don't say anything about
+what I have told you.&quot;</p>
+
+<p>&quot;Why?&quot; asked Ned quickly.</p>
+
+<p>Mr. Petrofsky approached closer to the lads, and in a low voice said:</p>
+
+<p>&quot;I am not sure about it, but of late I think I have been shadowed. I
+have seen strange men in the village near here and they have eyed me
+rather suspiciously. Then, too, I have surprised several men around my
+house. I live here all alone, you know, and do most of my own work, a
+woman coming in occasionally to clean. But I don't like these suspicious
+characters hanging about.</p>
+
+<p>&quot;Who do you think they are?&quot; asked Tom</p>
+
+<p>&quot;I'm almost afraid to think, but from my past experience I think&mdash;nay, I
+fear&mdash;they may be spies, or agents of the Russian government&quot;</p>
+
+<p>&quot;Spies!&quot; cried Ned.</p>
+
+<p>&quot;Hush. Not so loud,&quot; cautioned Mr. Petrofsky. &quot;They may even now be in
+hiding, especially since your aeroplane landed so near my house. They
+may see something suspicious even in that.&quot;</p>
+
+<p>&quot;But why should the Russian government set spies on you?&quot; asked Tom in a
+low voice.</p>
+
+<p>&quot;For two reasons. I am an escaped exile, and I am not a citizen of the
+United States. Therefore I may be sent back to the sulphur mines. And
+another reason is that they may think I know the secret of the platinum
+treasure&mdash;the lost mine.&quot;</p>
+
+<p>&quot;Say this is getting interesting!&quot; exclaimed Tom. &quot;If we are going to
+have a brush with some of the spies of the Russian government so much
+the better. I'm ready for 'em!&quot;</p>
+
+<p>&quot;So am I!&quot; added Ned.</p>
+
+<p>&quot;You don't know them,&quot; said Mr. Petrofsky, and he could not repress a
+shudder. &quot;I hope they are not on my trail, but if they are&mdash;&quot; he paused
+a moment, straightened himself up, and looked like what he was, a strong
+man&mdash;&quot;if they are let them look out. I'd give my life to save my
+brother from the awful, living death to which he is consigned!&quot;</p>
+
+<p>&quot;And we're with you!&quot; cried Tom, offering the Russian his hand. &quot;We'll
+turn the trick yet. Now don't forget to come and see us. Come along,
+Ned. If I'm going to build an air glider I've got to get busy.&quot; And
+waving farewells to their new friend, the lads took their places in the
+aeroplane and were soon on their way to Shopton.</p>
+
+<p>&quot;Well, what do you think of it?&quot; asked Ned of his chum, as they sped
+along at a good elevation, the engine going at half speed to be less
+noisy and make talking easier.</p>
+
+<p>&quot;Lots. I think we're in for a good time, an exciting one, anyhow, if
+what he says is true. But what in the world is an air glider, Tom?&quot;</p>
+
+<p>&quot;It's the last word in aeroplanes. You don't need a motor to make it
+go.&quot;</p>
+
+<p>&quot;Don't need a motor?&quot;</p>
+
+<p>&quot;No, the wind does it all. It's a sort of aeroplane, but the motion
+comes from the wind, acting on different planes, and this is
+accomplished by shifting weights. In it you can stand still in a fierce
+gale, if you like.&quot;</p>
+
+<p>&quot;How, by tying her fast on the ground?&quot;</p>
+
+<p>&quot;No, hovering in the air. It's all done by getting the proper balance.
+The harder the wind blows the better the air glider works, and that's
+why I think it will be just the thing for Siberia. I'm going to get
+right at work on it, and you'll help me; won't you?&quot;</p>
+
+<p>&quot;I sure will. Say, is platinum worth much?&quot;</p>
+
+<p>&quot;Worth much? I should say it was! It's got gold beat now, and the
+available supply is very small, and it's getting more scarce. Russia has
+several mines, and the metal is of good quality. I've used some Russian
+platinum, but the kind Mr. Petrofsky gave me to-day was better than the
+best I ever had. If we can only find that lost mine we'll be
+millionaires all right.&quot;</p>
+
+<p>&quot;That's what we thought when we found the city of gold, but the gold
+wasn't of as fine a grade as we hoped.&quot;</p>
+
+<p>&quot;Well, nothing like that can happen in this platinum deal. It sure is
+rich ore that Mr. Petrofsky and his brother found. Poor fellow! To think
+of being an exile in that awful country, not knowing where you may be
+sent next. No wonder Mr. Petrofsky wants to rescue him.&quot;</p>
+
+<p>&quot;That's right. Well, here we are. I wonder what your father will say
+when he hears you're thinking of another expedition, Tom?&quot;</p>
+
+<p>&quot;Oh, he'll want me to go when he hears about the exile.&quot;</p>
+
+<p>&quot;And I'm sure my folks will let me go. How about Mr. Damon?&quot;</p>
+
+<p>&quot;I don't believe we can hold him back. It will make a nice party, just
+you and I, and Mr. Damon and Mr. Petrofsky. That will leave room for the
+other Russian&mdash;if we can rescue him,&quot; and with that Tom shut off the
+engine and glided to earth.</p>
+
+<p>It may well be imagined that Mr. Swift was surprised when his son told
+him the latest news, but he did not offer any serious objection to the
+young inventor going to Siberia.</p>
+
+<p>&quot;Only you must be careful,&quot; he said. &quot;Those Russian officers are ugly
+when it comes to trying to take away any of their prisoners. And this
+air glider&mdash;I don't exactly know about that. It's a new machine, and you
+want to be sure it works before you trust yourself to it.&quot;</p>
+
+<p>&quot;I will,&quot; promised Tom. &quot;Say, I've got plenty of work ahead of me,&mdash;to
+get my big airship in shape, and build the glider. You'll have to help
+me, dad.&quot;</p>
+
+<p>&quot;I will, son. Now tell me more about this Mr. Petrofsky.&quot; Which Tom did.</p>
+
+<p>The days that followed were indeed busy ones for Tom. The young inventor
+made a model air glider that sailed fairly well, but he knew it would
+have to work better to be successful, and he bent all his energies in
+that direction. Meanwhile Mr. Damon had been told of the prospective
+trip.</p>
+
+<p>&quot;Bless my bank book! Of course I'll go,&quot; he said. &quot;But don't say
+anything about it to my wife&mdash;that is, just yet. I'll bring her around
+to it gradually. She has always wanted a diamond ring set in platinum,
+and now I can get it for her. I know she'll let me go if I break it to
+her gently.&quot;</p>
+
+<p>It may be mentioned here that many valuable diamonds are now set in
+platinum instead of gold.</p>
+
+<p>&quot;I want to keep busy,&quot; said Mr. Damon, so Tom set him, Ned and Eradicate
+at the task of getting the big airship in shape for the trip. This air
+craft has not figured in any of my previous stories, but as it is so
+nearly like the one that was crushed in the caves of ice, I will not
+give a description of it here. Those who care to may refer to the book
+telling of Tom's trip to the caves of ice for a detailed account of the
+craft.</p>
+
+<p>Sufficient to say that this latest airship, named the Falcon, was the
+largest Tom had ever built. It contained much room, many comforts, and
+could sail for several thousand miles without descending, except in case
+of accident. It was a combined dirigible balloon and aeroplane, and
+could be used as either, the necessary gas being made on board. It was
+large enough to enable the air glider to be taken on it in sections.</p>
+
+<p>It was about a week after their first meeting with him, that Ivan
+Petrofsky paid a visit to the Swift home. He was warmly welcomed by the
+aged inventor and Mr. Damon, and, closeted in the library of the house,
+he proceeded to go more into details of his own and his brother's exile
+to Siberia, and to tell about the supposed location of the lost platinum
+mine.</p>
+
+<p>&quot;I don't believe we can start for several weeks yet,&quot; said Tom, after
+some discussion. &quot;It will take me that long to make the glider.&quot;</p>
+
+<p>&quot;And I, too, need a little time,&quot; said the Russian. &quot;I will write to
+some friends in St. Petersburg and perhaps they can get some information
+for us, as to where my brother is.</p>
+
+<p>&quot;That will be good,&quot; declared Mr. Damon. &quot;Bless my icicle! But the more
+I think of this trip the better I like it!&quot;</p>
+
+<p>It was arranged that the Russian should call again soon, when the plans
+would be nearer in shape, and in the meanwhile he must learn all he
+could from revolutionary friends in Siberia.</p>
+
+<p>It was a week after this, during which Tom, Ned and the others had been
+very busy, that Tom decided to take a trip to see their Russian friend.
+They had not heard from him since his visit, and Tom wanted to learn
+something about the strength of the Siberian winds.</p>
+
+<p>He and Ned went in one of the small airships and soon they were hovering
+over the grounds surrounding the lonely house where Ivan Petrofsky
+lived.</p>
+
+<p>&quot;He doesn't seem to be at home,&quot; remarked Ned, as they descended and
+approached the dwelling.</p>
+
+<p>&quot;No, and it looks quite deserted,&quot; agreed the young inventor. &quot;Say, all
+the doors are open, too! He shouldn't go away and leave his house open
+like that&mdash;with the valuable platinum there.&quot;</p>
+
+<p>&quot;Maybe he's asleep,&quot; suggested Ned.</p>
+
+<p>They knocked on the opened door, but there was no answer. Then they went
+inside. To their surprise the house was in confusion. Furniture was
+overturned, tables and chairs were broken, and papers were scattered
+about the room.</p>
+
+<p>&quot;There's been a fight here!&quot; cried Tom.</p>
+
+<p>&quot;That's right,&quot; agreed Ned. &quot;Maybe he's been hurt&mdash;maybe burglars came
+for the platinum!&quot;</p>
+
+<p>&quot;Come on!&quot; cried Tom, making a dash for the stairs. &quot;We'll see if he's
+here.&quot;</p>
+
+<p>The house was small, and it took but a moment to show that Mr. Petrofsky
+was not there. Upstairs, as below, was the same confusion&mdash;the
+overturned furniture and the papers scattered about.</p>
+
+<p>Tom stooped and picked up a scrap that looked like a piece torn from a
+letter. On top was a seal&mdash;the black seal of Russia&mdash;the imperial arms
+of the Czar!</p>
+
+<p>&quot;Look!&quot; cried Tom, holding out the paper.</p>
+
+<p>&quot;What is it?&quot; asked Ned.</p>
+
+<p>&quot;The hand of the Czar!&quot; answered his chum. &quot;It has reached out from
+Russia, and taken Mr. Petrofsky away!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_IV" id="CHAPTER_IV" />CHAPTER IV</h2>
+
+<h3>THE SEARCH</h3>
+
+
+<p>For a moment Ned could scarcely understand what Tom meant. It scarcely
+seemed possible that such a thing could happen. That some one in far-off
+Russia&mdash;be it the Czar or one of the secret police&mdash;could operate from
+such a distance, seeking out a man in an obscure house in a little
+American village, and snatching him away.</p>
+
+<p>&quot;It isn't possible!&quot; declared Ned breathlessly.</p>
+
+<p>&quot;What difference does that make?&quot; asked Tom. &quot;The thing has happened,
+and you can't get out of it. Look at all the evidence&mdash;there's been a
+fight, that's sure, and Mr. Petrofsky is gone.&quot;</p>
+
+<p>&quot;But maybe he went away of his own accord,&quot; insisted Ned, who was
+sometimes hard to convince.</p>
+
+<p>&quot;Nonsense! If a man went away of his own accord would he smash up his
+furniture, leave his papers scattered all about and go off leaving the
+doors and windows open for any one to walk in? I guess not.&quot;</p>
+
+<p>&quot;Well, maybe you're right. But think of it! This isn't Russia!&quot;</p>
+
+<p>&quot;No, but he's a Russian subject, and, by his own confession an escaped
+exile. If he was arrested in the usual way he could be taken back, and
+our government couldn't interfere. He's been taken back all right. Poor
+man! Think of being doomed to those sulphur mines again, and as he
+escaped they'll probably make it all the harder for him!&quot;</p>
+
+<p>&quot;But I thought our government wouldn't help other nations to get back
+prisoners convicted of political crimes,&quot; suggested Ned. &quot;That's all Mr.
+Petrofsky was guilty of&mdash;politics, trying to help the poor in his own
+country. It's a shame if our government stands for anything like that!&quot;</p>
+
+<p>&quot;That's just the point!&quot; exclaimed Tom. Probably the spies, secret
+police, or whoever the Russian agents were, didn't ask any help from our
+government. If they did there might be a chance for him. But likely they
+worked in secret. They came here, sneaked in on him, and took him away
+before he could get help. Jove! If he could only have gotten word to me
+I'd have come in the airship, and then there'd be a different ending to
+this.&quot;</p>
+
+<p>&quot;I guess you're right, Tom. Well, that ends it I suppose.&quot;</p>
+
+<p>&quot;Ends what?&quot;</p>
+
+<p>&quot;Our trip to the platinum mine.&quot;</p>
+
+<p>&quot;Not a bit of it. I'm going to have a hunt for it.&quot;</p>
+
+<p>&quot;But how can you when Mr. Petrofsky can't go along to show us the way?
+Besides, we wanted to help rescue his brother, and now we can't.&quot;</p>
+
+<p>&quot;Well, I'm going to make a big try,&quot; declared the young inventor firmly.
+&quot;And the first thing I'm going to do is to get our friend out of the
+clutches of the Russian police.&quot;</p>
+
+<p>&quot;You are? How?&quot;</p>
+
+<p>&quot;I'm going to make a search for him. Look here, Ned, he must have been
+taken away some time to-day&mdash;perhaps only a few hours ago&mdash;and they
+can't have gone far with him.&quot;</p>
+
+<p>&quot;How do you make that out?&quot; Ned wanted to know.</p>
+
+<p>&quot;Well, I guess I'm detective enough for that,&quot; and Tom smiled. &quot;Look
+here, the doors and windows are open. Now it rained last night, and
+there was quite a wind. If the windows had been open in the storm
+there'd be some traces of moisture in the rooms. But there isn't a drop.
+Consequently the windows have been opened since last night.&quot;</p>
+
+<p>&quot;Say, that's so!&quot; cried Ned admiringly.</p>
+
+<p>&quot;But that's not all,&quot; went on Tom. &quot;Here's a bottle of milk on the
+table, and it's fresh,&quot; which he proved by tasting it. &quot;Now that was
+left by the milkman either late last night or early this morning. I
+don't believe it's over twelve hours old.&quot;</p>
+
+<p>&quot;Well, what does this mean?&quot; asked Ned, who couldn't quite follow Tom's
+line of reasoning.</p>
+
+<p>&quot;To my mind it means that the spies were here no later than this
+morning. Look at the table upset, the dishes on the floor. Here's one
+with oatmeal in it, and you know how hard and firm cooked oatmeal gets
+after it stands a bit. This is quite fresh, and soft, and&mdash;&quot;</p>
+
+<p>&quot;And that means&mdash;&quot; interrupted Ned, who was in turn interrupted by Tom,
+who exclaimed:</p>
+
+<p>&quot;It means that Mr. Petrofsky was at breakfast when they burst in on him,
+and took him away. They had hard work overpowering him, I'll wager, for
+he could put up a pretty good fight. And the broken furniture is
+evidence of that. Then the spies, after tying him up, or putting him in
+a carriage, searched the house for incriminating papers. That's as plain
+as the nose on your face. Then the police agents, or whoever they were,
+skipped out in a hurry, not taking the trouble to close the windows and
+doors.&quot;</p>
+
+<p>&quot;I believe it did happen that way,&quot; agreed Ned, who clearly saw what Tom
+meant. &quot;But what can we do? How can we find him?&quot;</p>
+
+<p>&quot;By getting on the trail,&quot; answered his chum quickly. &quot;There may be more
+clews in the house, and I'm sure there'll be some out of doors, for they
+must have left footprints or the marks of carriage wheels. We'll take a
+look, and then we'll get right on the search. I'm not going to let them
+take Mr. Petrofsky to Russia if I can help it. I want to get after that
+platinum, and he's the only one who can pilot us anywhere near the
+place; and besides, there's his brother we've got to rescue. We'll make
+a search for the exile.&quot;</p>
+
+<p>&quot;I'm with you!&quot; cried Ned. &quot;Jove! Wouldn't it be great if we could
+rescue him? They can't have gotten very far with him.&quot;</p>
+
+<p>&quot;I'm afraid they have quite a start on us,&quot; admitted Tom with a dubious
+shake of his head, &quot;but as long as they're in the United States we have
+a chance. If ever they get him on Russian soil it's all up with him.&quot;</p>
+
+<p>&quot;Come on then!&quot; cried Ned. &quot;Let's get busy. What's the first thing to
+do?&quot;</p>
+
+<p>&quot;Look for clews,&quot; replied Tom. &quot;We'll begin at the top of the house and
+work down. It's lucky we came when we did, for every minute counts.&quot;</p>
+
+<p>Then the two plucky lads began their search for the kidnapped Russian
+exile. Had those who took him away seen the mere youths who thus devoted
+themselves to the task, they might have laughed in contempt, but those
+who know Tom Swift and his sturdy chum, know that two more resourceful
+and brave lads would be hard to find.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_V" id="CHAPTER_V" />CHAPTER V</h2>
+
+<h3>A CLEW FROM RUSSIA</h3>
+
+
+<p>&quot;Nothing much up here,&quot; remarked Tom, when he and Ned had gone all over
+the second floor twice. &quot;That scrap of paper, which put me on to the
+fact that some one from the Russian government had been here, is about
+all. They must have taken all the documents Mr. Petrofsky had.&quot;</p>
+
+<p>&quot;Maybe he didn't have any,&quot; suggested Ned.</p>
+
+<p>&quot;If he was wise he'd get rid of them when he knew he was being shadowed,
+as he told us. Perhaps that was why they broke up the furniture,
+searching for hidden papers, or they may have done it out of spite
+because they didn't find anything. But we might as well go downstairs
+and look there.&quot;</p>
+
+<p>But the first floor was equally unproductive of clews, save those
+already noted, which showed, at least so Tom believed, that Mr.
+Petrofsky had been surprised and overpowered while at breakfast.</p>
+
+<p>&quot;Now for outside!&quot; cried the young inventor. &quot;We'll see if we can figure
+out how they got him away.&quot;</p>
+
+<p>There were plenty of marks in the soft ground and turf, which was still
+damp from the night's rain, though it was now afternoon. Unfortunately,
+however, in approaching the house after leaving the aeroplane, Ned and
+Tom had not thought to exercise caution, and, not suspecting anything
+wrong, they had stepped on a number of footprints left by the
+kidnappers.</p>
+
+<p>But for all that, they saw enough to convince them that several men had
+been at the lonely house, for there were many marks of shoes. It was out
+of the question, however, to tell which were those of Mr. Petrofsky and
+which those of his captors.</p>
+
+<p>&quot;They might have carried him out to a carriage they had in waiting,&quot;
+suggested Ned. &quot;Let's go out to the front gate and look in the road.
+They hardly would bring the carriage up to the door.&quot;</p>
+
+<p>&quot;Good idea,&quot; commented Tom, and they hurried to the main thoroughfare
+that passed the Russian's house.</p>
+
+<p>&quot;Here they are!&quot; cried Ned, Who was in the lead. &quot;There's been a
+carriage here as sure as you're a foot high and it's a rubber-tired one
+too.&quot;</p>
+
+<p>&quot;GOOD!&quot; cried Tom admiringly. &quot;You're coming right along in your
+detective training. How do you make that out?&quot;</p>
+
+<p>&quot;See here, where a piece of rubber has been broken or cut out of the
+tire. It makes a peculiar mark in the dirt every time the wheel goes
+around.&quot;</p>
+
+<p>&quot;That's right, and it will be a good thing to trace the carriage by.
+Come on, we'll keep right after it.&quot;</p>
+
+<p>&quot;Hold on a bit,&quot; suggested Ned, who, though not so quick as Tom Swift,
+frequently produced good results by his very slowness. &quot;Are you going
+off and leave the airship here for some one to walk off with?&quot;</p>
+
+<p>&quot;Guess they wouldn't take it far,&quot; replied the young inventor, &quot;but I'd
+better make it safe. I'll disconnect it so they can't start it, though
+if Andy Foger happens to come along he might slash the planes just out
+of spite. But I guess he won't show up.&quot;</p>
+
+<p>Tom took a connecting pin out of the electrical apparatus, making it
+impossible to start the aeroplane, and then, wheeling it out of sight
+behind a small barn, he and Ned went back to the carriage marks in the
+road.</p>
+
+<p>&quot;Hurry!&quot; urged Tom, as he started off in the direction of the village of
+Hurdtown, near where the cottage stood. &quot;We will ask people living along
+the highway if they've seen a carriage pass.&quot;</p>
+
+<p>&quot;But what makes you think they went off that way?&quot; asked Ned. &quot;I should
+think they'd head away from the village, so as not to be seen.&quot;</p>
+
+<p>&quot;No, I don't agree with you. But wait, we'll look at the marks. Maybe
+that will help us.&quot;</p>
+
+<p>Peering carefully at the marks of horses' hoofs and the wheel
+impressions, Tom uttered a cry of discovery.</p>
+
+<p>&quot;I have it!&quot; he declared. &quot;The carriage came from the village, and kept
+right on the other way. You're right, Ned. They didn't go back to town.</p>
+
+<p>&quot;Are you sure?&quot;</p>
+
+<p>&quot;Of course. You can see for yourself; if the carriage had turned around
+the track would show, but it doesn't and, even if they turned on the
+grass, there'd be two lines of marks&mdash;one coming out here and one
+returning. As it is there is only a single set&mdash;just as if the carriage
+drove up here, took on its load, and continued on. This way, Ned.&quot;</p>
+
+<p>They hurried down the road, and soon came to a cluster of farm houses.
+Inquiries there, however, failed to bring anything to light, for either
+the occupants of the house had failed to notice passing vehicles, or
+there had been so many that any particular carriage was not recalled.
+And there were now so many impressions in the soft dirt of the
+highway&mdash;so many wheel tracks and hoof imprints&mdash;that it was impossible
+to pick out those of the carriage with the cut rubber tire. &quot;Well, I
+guess it isn't of much use to go on any farther,&quot; spoke Ned, when they
+had traveled several miles and had learned nothing.</p>
+
+<p>&quot;We'll try one more house, and then go back,&quot; agreed Tom. &quot;We'll tell
+dad about what's happened, and see what he says.&quot;</p>
+
+<p>&quot;Carriage?&quot; repeated an old farmer to whom they next put the question.
+&quot;Wa'al, now, come t' think of it, I did see one drivin' along here early
+this morning. It had rubber tires on too, for I recollect remarkin' t'
+myself that it didn't make much noise. Had t' talk t' myself,&quot; he added
+in explanation, &quot;'cause nobody else in the family was up, 'ceptin' th'
+dog.&quot;</p>
+
+<p>&quot;Did the carriage have some Russians in it?&quot; asked Tom eagerly, &quot;and was
+one a big bearded man?&quot;</p>
+
+<p>&quot;Wa'al, now you've got me,&quot; admitted the farmer frankly. &quot;It was quite
+early you see, and I didn't take no particular notice. I got up early t'
+do my milkin' 'cause I have t' take it t' th' cheese factory. That's th'
+reason nobody was up but me. But I see this carriage comin' down th'
+road, and thinks I t' myself it was pretty middlin' early fer anybody t'
+be takin' a pleasure ride. I 'lowed it were a pleasure ride, 'cause it
+were one of them hacks that folks don't usually use 'ceptin' fer a
+weddin', or a funeral, an' it wa'n't no funeral.&quot;</p>
+
+<p>&quot;Then you can't tell us anything more except that it passed?&quot; asked Ned.</p>
+
+<p>&quot;No, I couldn't see inside, 'cause it was rather dark at that hour, and
+then, too, I noticed that they had th' window shades down.&quot;</p>
+
+<p>&quot;That's suspicious!&quot; exclaimed Tom. &quot;I believe they are the fellows we
+re after,&quot; and, without giving any particulars he said that they were
+looking for a friend who might have been taken away against his will.</p>
+
+<p>&quot;Could you tell where they were going?&quot; asked Tom, scarcely hoping to
+get an affirmative answer.</p>
+
+<p>&quot;Wa'al, th' man on th' seat pulled up when he see me,&quot; spoke the farmer
+with exasperating slowness, &quot;an' asked me how far it was t' th'
+Waterville station, an' I told him.&quot;</p>
+
+<p>&quot;Why didn't you say so at first?&quot; asked Tom quickly. &quot;Why didn't you
+tell us they were heading for the railroad?&quot;</p>
+
+<p>&quot;You didn't ask me,&quot; replied the farmer. &quot;What difference does it make.&quot;</p>
+
+<p>&quot;Every minute counts!&quot; exclaimed the young inventor. &quot;We want to keep
+right after those fellows. Maybe the agent can tell us where they bought
+tickets to, and we can trace them that way.</p>
+
+<p>&quot;Shouldn't wonder,&quot; commented the farmer. There ain't many trains out
+from Waterville at that time of day, an' mighty few passengers.
+Shouldn't wonder but Jake Applesauer could put ye on th' trail.&quot;</p>
+
+<p>&quot;Much obliged,&quot; called Tom. &quot;Come on, Ned,&quot; and he started back in the
+direction of the house where the kidnapping had taken place.</p>
+
+<p>&quot;That ain't th' way t' 'vaterville!&quot; the farmer shouted after them.</p>
+
+<p>&quot;I know it, we're going to get our airship,&quot; answered Tom, and then he
+heard the farmer mutter.</p>
+
+<p>&quot;Plumb crazy! That's what they be! Plumb crazy! Going after their
+airship! Shouldn't wonder but they was escaped lunatics, and the other
+fellers was keepers after 'em. Hu! Wa'al, I've got my work to do.
+'Tain't none of my affair.&quot;</p>
+
+<p>&quot;Let him think what he likes,&quot; commented Ned as he and his chum hurried
+on. &quot;We're on the trail all right.&quot;</p>
+
+<p>If Jake Applesauer, the agent at the Waterville station, was surprised
+at seeing two youths drop down out of an aeroplane, and begin
+questioning him about some suspicious strangers that had taken the
+morning train, he did not show it. Jake prided himself on not being
+surprised at anything, except once when he took a counterfeit dollar in
+return for a ticket, and had to make it good to the company.</p>
+
+<p>But, to the despair of Tom and Ned, he could not help them much. He had
+seen the party, of course. They had driven up in the hack, and one of
+the men seemed to be sick, or hurt, for his head was done up in
+bandages, and the others had to half carry him on the train.</p>
+
+<p>&quot;That was Mr. Petrofsky all right,&quot; declared Ned.</p>
+
+<p>&quot;Sure,&quot; assented Tom. &quot;They must have hurt and drugged him. But you
+can't tell us for what station they bought tickets, Mr. Applesauer?&quot;</p>
+
+<p>&quot;No, for they didn't buy any. They must have had 'em, or else they paid
+on the train. One man drove off in the coach, and that's all I know.&quot;</p>
+
+<p>As Tom and Ned started back to Shopton in the aeroplane they discussed
+what could be done next. A hard task lay before them, and they realized
+that.</p>
+
+<p>&quot;They could have gotten off at any station between here and New York, or
+even changed to another railroad at the junction,&quot; spoke Tom. &quot;It's
+going to be a hard job.&quot;</p>
+
+<p>&quot;Guess we'll have to get some regular detectives on it,&quot; suggested Ned.</p>
+
+<p>&quot;And that's what I'll do,&quot; declared the young inventor. &quot;They may be
+able to locate Mr. Petrofsky before those spies take him out of this
+country. If they don't&mdash;it will be too late. I'm going to talk to dad
+about it, and if he agrees I'll hire the best private detectives.&quot;</p>
+
+<p>Mr. Swift gave his consent when Tom had told the story, and, a day
+later, one of the best detectives of a well known agency called on Tom
+in Shopton and assumed charge of the case.</p>
+
+<p>The early reports from the detective were quite reassuring. He got on
+the trail of the men who had taken Mr. Petrofsky away, and confirmed the
+suspicion that they were agents of the Russian police. He trailed them
+as far as New York, and there the clews came to an end.</p>
+
+<p>&quot;Whether they are in the big city, which might easily be, or in some of
+the nearby towns, will take some time to learn,&quot; the detective wrote,
+and Tom wired back telling him to keep on searching.</p>
+
+<p>But, as several weeks went by, and no word came, even Tom began to give
+up hope, though he did not stop work on the air glider, which was
+nearing completion. And then, most unexpectedly a clew came&mdash;a clew from
+far-off Russia.</p>
+
+<p>Tom got a letter one day&mdash;a letter in a strange hand, the stamp and
+postmark showing that it had come from the land of the Czar.</p>
+
+<p>&quot;What do you suppose it contains?&quot; asked Ned, who was with his chum when
+the communication was received.</p>
+
+<p>&quot;Haven't the least idea; but I'll soon find out.&quot;</p>
+
+<p>&quot;Maybe it's from the Russian police, telling you to keep away from
+Siberia.&quot;</p>
+
+<p>&quot;Maybe,&quot; answered Tom absently, for he was reading the missive. &quot;I say!&quot;
+he suddenly cried. &quot;This is great! A clew at last, and from St.
+Petersburg! Listen to this, Ned!</p>
+
+<p>&quot;This letter is from the head of one of the secret societies over there,
+a society that works against the government. It says that Mr. Petrofsky
+is being detained a prisoner in a lonely hut on the Atlantic sea coast,
+not far from New York&mdash;Sandy Hook the letter says&mdash;and here are the very
+directions how to get there!&quot;</p>
+
+<p>&quot;No!&quot; cried Ned, in disbelief. &quot;How in the world could anybody in Russia
+know that.&quot;</p>
+
+<p>&quot;It tells here,&quot; said Tom. &quot;It's all explained. As soon as the secret
+police got Mr. Petrofsky they communicated with the head officials in
+St. Petersburg. You know nearly everyone is a spy over there, and the
+letter says that Mr. Petrofsky's friends there soon heard the news, and
+even about the exact place where he is being held.&quot;</p>
+
+<p>&quot;What are they holding him for?&quot; asked Ned.</p>
+
+<p>&quot;That's explained, too. It seems they can't legally take him back until
+certain papers are received from his former prison in Siberia, and those
+are now on the way. His friends write to me to hasten and rescue him.&quot;</p>
+
+<p>&quot;But how did they ever get your address?&quot;</p>
+
+<p>&quot;That's easy, though you wouldn't think so. It seems, so the letter
+explains, that as soon as Mr. Petrofsky got acquainted with us he wrote
+to friends in St. Petersburg, giving my address, and telling them, in
+case anything ever happened to him, to notify us. You see he suspected
+that something might, after he found he was being shadowed that way.</p>
+
+<p>&quot;And it all worked out. As soon as his friends heard that he was caught,
+and learned where he was being held, they wrote to me. Hurrah, Ned! A
+clew at last! Now to wire the detective&mdash;no, hold on, we'll go there and
+rescue him ourselves! We'll go in the airship, and pick up Detective
+Trivett in New York.&quot;</p>
+
+<p>&quot;That's the stuff! I'm with you!&quot;</p>
+
+<p>&quot;Bless my suspender buttons! So am I, whatever it is!&quot; cried Mr. Damon,
+entering the room at that moment.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_VI" id="CHAPTER_VI" />CHAPTER VI</h2>
+
+<h3>RESCUING MR. PETROFSKY</h3>
+
+
+<p>&quot;We ought to be somewhere near the place now, Tom.&quot;</p>
+
+<p>&quot;I think we are, Ned. But you know I'm not going too close in this
+airship.&quot;</p>
+
+<p>&quot;Bless my silk hat!&quot; exclaimed Mr. Damon. &quot;I hope we don't have to walk
+very far in such a deserted country as this, Tom Swift.&quot;</p>
+
+<p>&quot;We'll have to walk a little way, Mr. Damon,&quot; replied the young
+inventor. &quot;If I go too close to the hut they'll see the airship, and as
+those spies probably know that Mr. Petrofsky has been dealing with me,
+They'd smell a rat at once, and run away, taking him with them, and we'd
+have all our work to do over again.&quot;</p>
+
+<p>&quot;That's right,&quot; agreed Detective Trivett, who was one of the four in the
+airship that was now hovering over the Atlantic coast, about ten miles
+below the summer resorts of which Asbury Park was one.</p>
+
+<p>It was only a few hours after Tom had received the letter from Russia
+informing him of the whereabouts of the kidnapped Russian, and he had
+acted at once.</p>
+
+<p>His father sanctioned the plan of going to the rescue in one of Tom's
+several airships and, Mr. Damon, having been on hand, at once agreed to
+go. Of course Ned went along, and they had picked up the private
+detective in New York, where he was vainly seeking a clew to the
+whereabouts of Mr. Petrofsky.</p>
+
+<p>Now the young inventor and his friends were hovering over the sandy
+stretch of coast that extends from Sandy Hook down the Atlantic
+seaboard. They were looking for a small fishing hamlet on the outskirts
+of which, so the Russian letter stated, was situated the lonely hut in
+which Mr. Petrofsky was held a prisoner.</p>
+
+<p>&quot;Do you think you can pick it out from a distance, Tom?&quot; asked Mr.
+Damon, as the airship floated slowly along. It was not the big one they
+intended taking on their trip to Siberia, but it was sufficiently large
+to accommodate the four and leave room for Mr. Petrofsky, should they
+succeed in rescuing him.</p>
+
+<p>&quot;I think so,&quot; answered the young inventor.</p>
+
+<p>In the letter from Russia a comparatively accurate description of the
+prisoner's hut had been given, and also some details about his guards.
+For there is little goes on in political circles in the realm of the
+Czar that is not known either to the spies of the government or those of
+the opposition, and the latter had furnished Tom with reliable
+information.</p>
+
+<p>&quot;That looks like the place,&quot; said Tom at length, when, after peering
+steadily through a powerful telescope, during which time Ned steered the
+ship, the young inventor &quot;picked up&quot; a fishing settlement. &quot;There is the
+big fish house, spoken of in the letter,&quot; he went on, &quot;and the Russians
+know a lot about fish. That house makes a good landmark. We'll go down
+now, before they have a chance to see us.&quot;</p>
+
+<p>The others thought this a good idea, and a little later the airship sank
+to the ground amid a lonely stretch of sand dunes, about two miles from
+the hamlet on the outskirts of which the prison hut was said to be
+located.</p>
+
+<p>&quot;Now,&quot; said Tom, &quot;we've got to decide on a plan of Campaign. It won't do
+for all of us to go to the hut and make the rescue. Some one has got to
+stay with the airship, to be ready to start it off as soon as we come
+back with Mr. Petrofsky&mdash;if we do come.</p>
+
+<p>&quot;Then there's no use in me staying here,&quot; spoke Detective Trivett. &quot;I
+don't know enough even to turn on the gasolene.&quot;</p>
+
+<p>&quot;No, it's got to be Ned or me,&quot; said the young inventor.</p>
+
+<p>&quot;I'll stay,&quot; volunteered Ned quickly, for though he would very much have
+liked to be in at the rescue, he realized that his place was in the
+airship, as Mr. Damon was not sufficiently familiar with the machinery
+to operate it.</p>
+
+<p>Accordingly, after looking to everything to see that it was in working
+order, Tom led the advance. It was just getting dusk, and they figured
+on getting to the hut after dark.</p>
+
+<p>&quot;Have everything ready for a quick start,&quot; Tom said to Ned, &quot;for we may
+come back running.&quot;</p>
+
+<p>&quot;I will,&quot; was the prompt answer, and then, getting their bearings, the
+little party set off.</p>
+
+<p>They had to travel over a stretch of sandy waste that ran along the
+beach. Back in shore were a few scattered cottages, and not yet opened
+for the summer, and on the ocean side was the pounding surf. The hut, as
+Tom recalled the directions, lay just beyond a group of stunted hemlock
+trees that set a little way hack from the ocean, on a bluff overlooking
+the sea. It was not near any other building.</p>
+
+<p>Slowly, and avoiding going any nearer the other houses than they could
+help, the little party made its way. They had to depend on their own
+judgement now, for the minor details of the location of the hut could
+not be given in the letter from Russia. In fact the spies themselves, in
+writing to their head officers about the matter, had not described the
+location in detail.</p>
+
+<p>&quot;That looks like it over there,&quot; said Tom at last, when they had gone
+about a mile and a half, and saw a lonely hut with a light burning in
+it.</p>
+
+<p>Cautiously they approached and, as they drew nearer, they saw that the
+light came through the window of a small hut.</p>
+
+<p>&quot;Looks like the place,&quot; commented the detective.</p>
+
+<p>&quot;We'll have a look,&quot; remarked Tom.</p>
+
+<p>He crept up so he could glance in the window, and no sooner had he
+peered in, than he motioned for the others to approach.</p>
+
+<p>Looking under a partly-drawn curtain, Mr. Damon and Mr. Trivett saw the
+Russian whom they sought. He was seated at a table, his head bowed on
+his hands, and in the room were three men. A rifle stood in one corner,
+near one of the guards.</p>
+
+<p>&quot;They're taking no chances,&quot; whispered Mr. Damon. &quot;What shall we do,
+Tom?&quot;</p>
+
+<p>&quot;It's three to three,&quot; replied the young inventor. &quot;But if we can get
+him away without a fight, so much the better. I think I have it. I'll go
+up to the door, knock and make quite a racket, and demand admittance in
+the name of the Czar. That will startle them, and they may all three
+rush to answer. Mr. Damon, you and the detective will stay by the
+window. As soon as you see the men rush for the door, smash in the
+window with a piece of driftwood and call to Mr. Petrofsky to jump out
+that way. Then you can run with him toward the airship, and I'll follow.
+It may work.&quot;</p>
+
+<p>&quot;I don't see why it wouldn't,&quot; declared the detective. &quot;Go ahead, Tom.
+We're ready.&quot;</p>
+
+<p>Looking in once more, to make sure that the guards were not aware of the
+presence of the rescuing party, Tom went to the front door of the hut.
+It was a small building, evidently one used by fishermen.</p>
+
+<p>Tom knocked loudly on the portal, at the same time crying out in a voice
+that he strove to make as deep and menacing as possible:</p>
+
+<p>&quot;Open! Open in the name of the Czar!&quot;</p>
+
+<p>Looking through the window, ready to act on the instant, Mr. Damon and
+the detective saw the three guards spring to their feet. One remained
+near Mr. Petrofsky, who also leaped up.</p>
+
+<p>&quot;Now!&quot; called the detective to his companion. &quot;Smash the window!&quot;</p>
+
+<p>The next instant a big piece of driftwood crashed through the casement,
+just as the two men were hurrying to the front door to answer Tom's
+summons.</p>
+
+<p>&quot;Mr. Petrofsky! This way!&quot; yelled Mr. Damon, sticking his head in
+through the broken sash. &quot;Come out! We've come to save you! Bless my
+putty blower, but this is great! Come on!&quot;</p>
+
+<p>For a moment the exile stared at the head thrust through the broken
+window, and he listened to Tom's emphatic knocks and demands. Then with
+a cry of delight the Russian sprang for the open casement, while the
+guard that had remained near him made a leap to catch him, crying out:</p>
+
+<p>&quot;Betrayed! Betrayed! It's the Nihilists! Look out, comrades!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_VII" id="CHAPTER_VII" />CHAPTER VII</h2>
+
+<h3>THE AIR GLIDER</h3>
+
+
+<p>Mr. Damon continued to hammer away at the window sash with the piece of
+driftwood. There were splinters of the frame and jagged pieces of glass
+sticking out, making it dangerous for the exile to slip through.</p>
+
+<p>&quot;Come on! Come on!&quot; the eccentric man continued to call. &quot;Bless my
+safety valve! We'll save you! Come on!&quot;</p>
+
+<p>Mr. Petrofsky was leaping across the room, just ahead of the one guard.
+The other two were at the open door now, through which Tom could be
+seen. Then the spies, realizing in an instant that they had been
+deceived, made a dash after their comrade, who had his hand on the tails
+of the exile's coat.</p>
+
+<p>&quot;Break away! Break loose!&quot; cried Mr. Damon, who, by this time had
+cleared the window so a person could get through. &quot;Don't let them hold
+you!&quot;</p>
+
+<p>&quot;I don't intend to!&quot; retorted Mr. Petrofsky, and he swerved suddenly,
+tearing his coat, from the grasp of the guard.</p>
+
+<p>In another instant the exile was at the casement, and was being helped
+through by Mr. Damon, and there was need of it, for the three guards
+were there now, doing their best to keep their prisoner.</p>
+
+<p>&quot;Pull away! Pull away!&quot; cried Mr. Damon.</p>
+
+<p>&quot;We'll help you!&quot; shouted Tom, who, now that his trick had worked, had
+sped around to the other side of the hut.</p>
+
+<p>&quot;Don't be afraid, we're with you!&quot; exclaimed the detective, who was with
+the young inventor.</p>
+
+<p>&quot;Grab him! Keep him! Hold him!&quot; fairly screamed the rearmost of the
+three guards. &quot;It is a plot of the Nihilists to rescue him. Shoot him,
+comrades. He must not get away!&quot;</p>
+
+<p>&quot;Don't you try any of your shooting games, or I'll take a hand in it!&quot;
+shouted the detective, and, at the same moment he drew his revolver and
+fired harmlessly in the air.</p>
+
+<p>&quot;A bomb! A bomb!&quot;, yelled the guards in terror.</p>
+
+<p>&quot;Not yet, but there may be!&quot; murmured Tom. The firing of the shot
+produced a good effect, for the three men who were trying to detain Ivan
+Petrofsky at once fell back from the window and gave him just the chance
+needed. He scrambled through, with the aid of Mr. Damon, and before the
+guards could again spring at him, which they did when the echoes of the
+shot had died away. They had realized, too late, that it was not a bomb,
+and that there was no immediate danger for them.</p>
+
+<p>&quot;Come on!&quot; cried Tom. &quot;Make for the airship! We've got to get the start
+of them!&quot;</p>
+
+<p>Leading the way, he sprinted toward the road that led to the place where
+the airship awaited them. He was followed by Mr. Damon and the
+detective, who had Mr. Petrofsky between them.</p>
+
+<p>&quot;Are you all right?&quot; Tom called back to the exile. &quot;Are you hurt? Can
+you run?&quot;</p>
+
+<p>&quot;I'm all right,&quot; was the reassuring answer. &quot;Go ahead; But they'll be
+right after us.&quot;</p>
+
+<p>&quot;Maybe they'll stop when they see this,&quot; remarked the detective
+significantly, and he held his revolver so that the rays of the
+newly-risen moon glinted on it.</p>
+
+<p>&quot;Here they come!&quot; cried Tom a moment later, as three figures, one after
+the other, came around the corner of the house. They had not taken the
+shorter route through the window, as had Mr. Petrofsky, and this gained
+a little time for our friends.</p>
+
+<p>&quot;Stop! Hold on!&quot; cried one of the guards in fairly good English. &quot;That
+is our prisoner.&quot;</p>
+
+<p>&quot;Not any more!&quot; the young inventor yelled back. &quot;He's ours now.&quot;</p>
+
+<p>&quot;Look out! They're going to shoot!&quot; cried Mr. Damon. &quot;Bless my
+gunpowder! can't you stop them some way or other, Mr. Detective?&quot;</p>
+
+<p>&quot;The only way is by firing first,&quot; answered Mr. Trivett, &quot;and I don't
+want to hurt them. Guess I'll fire in the air again.&quot;</p>
+
+<p>He did, and the guards halted. They seemed to be holding a consultation,
+as Tom learned by glancing hastily back, and he caught the glisten of
+some weapon. But if the three men had any notion of firing they gave it
+up, and once more came on running. Doubtless they had orders to get
+their prisoner back to Russia alive, and did not want to take any
+chances of hitting him.</p>
+
+<p>&quot;Leg it!&quot; cried Tom. &quot;Leg it!&quot;</p>
+
+<p>He was well ahead, and wanted the others to catch up to him, but none of
+the men was a good runner, and Mr. Petrofsky, by reason of being rather
+heavily built, was worse than the other two, so they had to accommodate
+their pace to his.</p>
+
+<p>&quot;I wonder if we can make it,&quot; mused Tom, as he realized that the airship
+was a good distance off yet the guards, though quite a way in the rear
+now were coming on fast. &quot;It's going to be a close race,&quot; thought the
+young inventor. &quot;I wish we'd brought the airship a little nearer.&quot;</p>
+
+<p>It was indeed a race now, for the guards, seeming to know that they
+would not be shot at, were coming on more confidently, and were rapidly
+lessening the distance that separated them from their recent prisoner.</p>
+
+<p>&quot;We've got to go faster!&quot; cried Tom.</p>
+
+<p>&quot;Bless my shoe leather!&quot; yelled Mr. Damon. &quot;I can't go any faster.&quot;</p>
+
+<p>Still he did make the attempt, and so did the exile and the detective.
+Little was said now, for each of the parties was running a dogged race,
+and in silence. They had gone possibly half a mile, and the first
+advantage of Tom and his friends was rapidly being lost, when suddenly
+there sounded in the air above a curious throbbing noise.</p>
+
+<p>&quot;Bless my gasolene! What's that?&quot; cried Mr. Damon.</p>
+
+<p>&quot;The airship! It's the airship!&quot; yelled Tom, as he saw a great dark
+shape slowly approaching. &quot;Ned is bringing her to met us.&quot;</p>
+
+<p>&quot;Good!&quot; cried the detective. &quot;We need it I'm about winded!&quot;</p>
+
+<p>&quot;This way, Ned! This way!&quot; cried Tom, and, an instant later, they were
+in the midst of a brilliant glow, for Ned had turned the current into
+the great searchlight on the bow of the air craft, and the beams were
+focused on our friends. Ned could now see the refugees, and in a moment
+he sent the graceful craft down, bringing it to a halt on the ground
+near Tom.</p>
+
+<p>&quot;In with you!&quot; cried the lad. &quot;She's all ready to start up again!&quot;</p>
+
+<p>&quot;Come on!&quot; yelled Tom to the others. &quot;We're all right now, if you
+hustle!&quot;</p>
+
+<p>&quot;Bless my pin cushion!&quot; gasped Mr. Damon, making a final spurt.</p>
+
+<p>The three guards had halted in confusion on seeing the big, black bulk
+of the airship, and when they noted the gleaming of the searchlight they
+must have realized that their chances were gone. They made a rush,
+however, but it was too late. Over the side of the craft scrambled Tom,
+Mr. Damon, the detective and Ivan Petrofsky, and an instant later Ned
+had sent it aloft. The race was over, and the young inventor and his
+friends had won.</p>
+
+<p>&quot;You're the stuff!&quot; cried Tom to Ned, as he went with his chum to the
+pilot house to direct the progress of the airship. &quot;It's lucky you came
+for us. We never could have made the distance. We left the ship too far
+off.&quot;</p>
+
+<p>&quot;That's what I thought after you'd gone,&quot; replied his chum. &quot;So I
+decided to come and meet you. I had to go slowly so as not to pass you
+in the darkness.&quot;</p>
+
+<p>They were speeding off now, and Ned, turning the beams of the great
+searchlight below them, picked up the three guards who were gazing
+helplessly aloft after their fast disappearing prisoner.</p>
+
+<p>&quot;You're having your first ride in an airship, Mr. Petrofsky,&quot; remarked
+Tom, when they had gone on for some little distance. &quot;How do you like
+it?&quot;</p>
+
+<p>&quot;I'm so excited I hardly know, but it's quite a sensation. But how in
+the world did you ever find me to rescue me?&quot;</p>
+
+<p>Then they told the story of their search, and the unexpected clew from
+Russia. In turn the exile told how he had been attacked at the breakfast
+table one morning by the three spies&mdash;the very men who had been
+shadowing him&mdash;and taken away secretly, being drugged to prevent his
+calling for help. He had been kept a close prisoner in the lonely hut,
+and each day he had expected to be taken back to serve out his sentence
+in Siberia.</p>
+
+<p>&quot;Another day would have been too late,&quot; he told Tom, when he had thanked
+the young inventor over and over again, &quot;for the papers would have
+arrived, and the last obstacle to taking me back to Russia would have
+been removed. They dared not take me out of the United States without
+official documents, and they would have been forged ones, for they
+intended trumping up a criminal charge against me, the political one not
+being strong enough to allow them to extradite me.&quot;</p>
+
+<p>&quot;Well I'm glad we got you,&quot; said Tom heartily. &quot;We will soon be ready to
+start for Siberia.&quot;</p>
+
+<p>&quot;In this kind of a craft?&quot;</p>
+
+<p>&quot;Yes, only much larger. You'll like it. I only hope my air glider
+works.&quot;</p>
+
+<p>By putting on speed, Tom was able to reach Shopton before midnight, and
+there was quite an informal celebration in the Swift homestead over the
+rescue of the exile. The detective, for whom there was no further need,
+was paid off, and Mr. Petrofsky was made a member of the household.</p>
+
+<p>&quot;You'd better stay here until we are ready to start,&quot; Tom said, &quot;and
+then we can keep an eye on you. We need you to show us as nearly as
+possible where the platinum field is.&quot;</p>
+
+<p>&quot;All right,&quot; agreed the Russian with a laugh. &quot;I'm sure I'll do all I
+can for you, and you are certainly treating me very nicely after what I
+suffered from my captors.&quot;</p>
+
+<p>Tom resumed work on his air glider the next day, and he had an
+additional helper, for Mr. Petrofsky proved to be a good mechanic.</p>
+
+<p>In brief, the air glider was like an aeroplane save that it had no
+motor. It was raised by a strong wind blowing against transverse planes,
+and once aloft was held there by the force of the air currents, just
+like a box kite is kept up. To make it progress either with or against
+the wind, there were horizontal and vertical rudders, and sliding
+weights, by which the equilibrium could be shifted so as to raise or
+lower it. While it could not exactly move directly against the wind it
+could progress in a direction contrary to which the gale was blowing,
+somewhat as a sailing ship &quot;tacks.&quot;</p>
+
+<p>And, as has been explained, the harder the wind blew the better the air
+glider worked. In fact unless there was a strong gale it would not go
+up.</p>
+
+<p>&quot;But it will be just what is needed out there in that part of Siberia,&quot;
+declared the exile, &quot;for there the wind is never quiet. Often it blows a
+regular hurricane.&quot;</p>
+
+<p>&quot;That's what we want!&quot; cried Tom. He had made several models of the air
+glider, changing them as he found out his errors, and at last he had hit
+on the right shape and size.</p>
+
+<p>Midway of the big glider, on which work was now well started, there was
+to be an enclosed car for the carrying of passengers, their food and
+supplies. Tom figured on carrying five or six.</p>
+
+<p>For several weeks the work on the air glider progressed rapidly, and it
+was nearing completion. Meanwhile nothing more had been heard or seen of
+the Russian spies.</p>
+
+<p>&quot;Well,&quot; announced Tom one night, after a day's hard work, &quot;we'll be
+ready for a trial now, just as soon as there comes a good wind.&quot;</p>
+
+<p>&quot;Is it all finished?&quot; asked Ned.</p>
+
+<p>&quot;No, but enough for a trial spin. What I want is a big wind now.&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_VIII" id="CHAPTER_VIII" />CHAPTER VIII</h2>
+
+<h3>IN A GREAT GALE</h3>
+
+
+<p>There was a humming in the air. The telegraph wires that ran along on
+high poles past the house of Tom Swift sung a song like that of an
+Aeolian harp. The very house seemed to tremble.</p>
+
+<p>&quot;Jove! This is a wind!&quot; cried Tom as he awakened on a morning a few days
+after his air glider was nearly completed. &quot;I never saw it so strong.
+This ought to be just what I want I must telephone to Mr. Damon and to
+Ned.&quot;</p>
+
+<p>He hustled into his clothes, pausing now and then to look out of his
+window and note the effects of the gale. It was a tremendous wind, as
+was evidenced by the limbs of several trees being broken off, while in
+some cases frail trees themselves had been snapped in twain.</p>
+
+<p>&quot;Coffee ready, Mrs. Baggert?&quot; asked our hero as he went downstairs. &quot;I
+haven't got time to eat much though.&quot;</p>
+
+<p>In spite of his haste Tom ate a good breakfast and then, having
+telephoned to his two friends, and receiving their promises to come
+right over, our hero went out to make a few adjustments to his air
+glider, to get it in shape for the trial.</p>
+
+<p>He was a little worried lest the wind die out, but when he got outside
+he noted with satisfaction that the gale was stronger than at first. In
+fact it did considerable damage in Shopton, as Tom learned later.</p>
+
+<p>It certainly was a strong wind. An ordinary aeroplane never could have
+sailed in it, and Tom was doubtful of the ability of even his big
+airship to navigate in it. But he was not going to try that.</p>
+
+<p>&quot;And maybe my air glider won't work,&quot; he remarked to himself as he was
+on his way to the shed where it had been constructed. &quot;The models went
+up all right, but maybe the big one isn't proportioned right. However,
+I'll soon see.&quot;</p>
+
+<p>He was busy adjusting the balancing weights when Ned Newton came in.</p>
+
+<p>&quot;Great Scott!&quot; exclaimed the lad, as he labored to close the shed door,
+&quot;this is a blow all right, Tom! Do you think it's safe to go up?&quot;</p>
+
+<p>&quot;I can't go up without a gale, Ned.&quot;</p>
+
+<p>&quot;Well, I'd think twice about it myself.&quot;</p>
+
+<p>&quot;Why, I counted on you going up with me.&quot;</p>
+
+<p>&quot;Burr-r-r-r!&quot; and Ned pretended to shiver. &quot;I haven't an accident
+insurance policy you know.&quot;</p>
+
+<p>&quot;You won't need it, Ned. If we get up at all we'll be all right. Catch
+hold there, and shift that rear weight a little forward on the rod. I
+expect Mr. Damon soon.&quot;</p>
+
+<p>The eccentric man came in a little later, just as Tom and Ned had
+finished adjusting the mechanism.</p>
+
+<p>&quot;Bless my socks!&quot; cried Mr. Damon. &quot;Do you really mean to go up to-day,
+Tom?&quot;</p>
+
+<p>&quot;I sure do! Why, aren't you going with me?&quot; and Tom winked at Ned.</p>
+
+<p>&quot;Bless my&mdash;&quot; began Mr. Damon, and then, evidently realizing that he was
+being tested he exclaimed: &quot;Well, I will go, Tom! If the air glider is
+any good it ought to hold me. I will go up.&quot;</p>
+
+<p>&quot;Now, Ned, how about you?&quot; asked the young inventor.</p>
+
+<p>&quot;Well, I guess it's up to me to come along, but I sure do wish it was
+over with,&quot; and Ned glanced out of the window to see if the gale was
+dying out. But the wind was as high as ever.</p>
+
+<p>It was hard work getting the air glider out of the shed, and in position
+on top of a hill, about a quarter of a mile away, for Tom intended
+&quot;taking off&quot; from the mound, as he could not get a running start without
+a motor. The wind, however, he hoped, would raise him and the strange
+craft.</p>
+
+<p>In order to get it over the ground without having it capsize, or elevate
+before they were ready for it, drag ropes, attached to bags of sand were
+used, and once these were attached the four found that they could not
+wheel the air glider along on its bicycle wheels.</p>
+
+<p>&quot;We'll have to get Eradicate and his mule, I guess,&quot; said Tom, after a
+vain endeavor to make progress against the wind. &quot;When it's up in the
+air it will be all right, but until then I'll need help to move it. Ned,
+call Rad, will you?&quot;</p>
+
+<p>The colored man, with Boomerang, his faithful mule, was soon on hand.
+The animal was hitched to the glider, and pulled it toward the hill.</p>
+
+<p>&quot;Now to see what happens,&quot; remarked Tom as he wheeled his latest
+invention around where the wind would take it as soon as the restraining
+ropes were cast off, for it was now held in place by several heavy
+cables fastened to stakes driven in the ground.</p>
+
+<p>Tom gave a last careful look to the weights, planes and rudders. He
+glanced at a small anemometer or wind gage, on the craft, and noted that
+it registered sixty miles an hour.</p>
+
+<p>&quot;That ought to do,&quot; he remarked. &quot;Now who's going up with me? Will you
+take a chance, Mr. Petrofsky?&quot;</p>
+
+<p>&quot;I'd rather not&mdash;at first.&quot;</p>
+
+<p>&quot;Come on then, Ned and Mr. Damon. Mr. Petrofsky and Rad can cast off the
+ropes.&quot;</p>
+
+<p>The wind, if anything, was stronger than ever. It was a terrific gale,
+and just what was needed. But how would the air glider act? That was
+what Tom wanted very much to know.</p>
+
+<p>&quot;Cast off!&quot; he cried to the Russian and Eradicate, and they slipped the
+ropes.</p>
+
+<p>The next moment, with a rush and whizzing roar, the air glider shot
+aloft on the wings of the wind.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_IX" id="CHAPTER_IX" />CHAPTER IX</h2>
+
+<h3>THE SPIES</h3>
+
+
+<p>&quot;We're certainly going up!&quot; yelled Ned, as he sat beside Tom in the
+cabin of the air glider.</p>
+
+<p>&quot;That's right!&quot; agreed the young inventor rather proudly, as he grasped
+two levers, one of which steered the craft, the other being used to
+shift the weights. &quot;We're going up. I was pretty sure of that. The next
+thing is to see if it will remain stationary in the air, and answer the
+rudder.&quot;</p>
+
+<p>&quot;Bless my top knot!&quot; cried Mr. Damon. &quot;You don't mean to tell me you can
+stand still in a gale of wind, Tom Swift.&quot;</p>
+
+<p>&quot;That's exactly what I do mean. You can't do it in an aeroplane, for
+that depends on motion to keep itself up in the air. But the glider is
+different. That's one of its specialties, remaining still, and that's
+why it will be valuable if we ever get to Siberia. We can hover over a
+certain spot in a gale of wind, and search about below with telescopes
+for a sign of the lost platinum mine.</p>
+
+<p>&quot;How high are you going up?&quot; demanded Ned, for the air glider was still
+mounting upward on a slant. If you' ever scaled a flat piece of tin, or
+a stone, you'll remember how it seems to slide up a hill of air, when it
+was thrown at the right angle. It was just this way with the air
+glider&mdash;it was mounting upward on a slant.</p>
+
+<p>&quot;I'm going up a couple of hundred feet at least,&quot; answered Tom, &quot;and
+higher if the gale-strata is there. I want to give it a good test while
+I'm at it.&quot;</p>
+
+<p>Ned looked down through a heavy plate of glass in the floor of the
+cabin, and could see Mr. Petrofsky and Eradicate looking up at them.</p>
+
+<p>&quot;Bless my handkerchief!&quot; cried Mr. Damon, when his attention had been
+called to this. &quot;It's just like an airship.&quot;</p>
+
+<p>&quot;Except that we haven't a bit of machinery on board,&quot; said Tom. &quot;These
+weights do everything,&quot; and he shifted them forward on the sliding rods,
+with the effect that the air glider dipped down with a startling lurch.</p>
+
+<p>&quot;We're falling!&quot; cried Ned.</p>
+
+<p>&quot;Not a bit of it,&quot; answered Tom. &quot;I only showed you how it worked. By
+sliding the weights back we go up.&quot;</p>
+
+<p>He demonstrated this at once, sending his craft sliding up another hill
+of air, until it reached an elevation of four hundred feet, as evidenced
+by the barograph.</p>
+
+<p>&quot;I guess this is high enough,&quot; remarked Tom after a bit. &quot;Now to see if
+she'll stand still.&quot;</p>
+
+<p>Slowly he moved the weights along, by means of the compound levers,
+until the air glider was on an &quot;even keel&quot; so to speak. It was still
+moving forward, with the wind now, for Tom had warped his wing tips.</p>
+
+<p>&quot;The thing to do,&quot; said the young inventor, &quot;is to get it exactly
+parallel with the wind-strata, so that the gale will blow through the
+two sets of planes, just as the wind blows through a box kite. Only we
+have no string to hold us from moving. We have to depend on the
+equalization of friction on the surfaces of the wings. I wonder if I can
+do it.&quot;</p>
+
+<p>It was a delicate operation, and Tom had not had much experience in that
+sort of thing, for his other airships and aeroplanes worked on an
+entirely different principle. But he moved the weights along, inch by
+inch, and flexed the tips, planes and rudders until finally Ned, who was
+looking down through the floor window, cried out:</p>
+
+<p>&quot;We're stationary!&quot;</p>
+
+<p>&quot;Good!&quot; exclaimed Tom. &quot;Then it's a success.&quot;</p>
+
+<p>&quot;And we can go to Siberia?&quot; added Mr. Damon.</p>
+
+<p>&quot;Sure,&quot; assented the young inventor. &quot;And if we have luck we'll rescue
+Mr. Petrofsky's brother, and get a lot of platinum that will be more
+valuable than gold.&quot;</p>
+
+<p>It would not be true to say that the air glider was absolutely
+stationary. There was a slight forward motion, due to the fact that it
+was not yet perfected, and also because Tom was not expert enough in
+handling it.</p>
+
+<p>The friction on the plane surfaces was not equalized, and the gale
+forced the craft along slightly. But, compared to the terrific power of
+the wind, the air glider was practically at a standstill, and this was
+remarkable when one considers the force of the hurricane that was
+blowing above below and through it.</p>
+
+<p>For actually that was what the hurricane was doing. It was as if an
+immense box kite was suspended in the air, without a string to hold it
+from moving, and as though a cabin was placed amidships to hold human
+beings.</p>
+
+<p>&quot;This sure is great!&quot; cried Ned. &quot;Have you got her in control, Tom?&quot;</p>
+
+<p>&quot;I think so. I'll try and see how she works.&quot;</p>
+
+<p>By shifting the weights, changing the balance, and warping the wings,
+the young inventor sent the craft higher up, made it dip down almost to
+the earth, and then swoop upward like some great bird. Then he turned it
+completely about and though he developed no great speed in this test
+made it progress quarteringly against the wind,</p>
+
+<p>&quot;It's almost perfect,&quot; declared Tom. &quot;A few touches and she'll be all
+right.&quot;</p>
+
+<p>&quot;Is it all right?&quot; asked Ivan Petrofsky anxiously, as the three left the
+cabin, and Eradicate hitched his mule to the glider to take it back to
+the shed.</p>
+
+<p>&quot;I see where it can be improved,&quot; he said, as they made ready to
+descend. &quot;I'll soon have it in shape.&quot;</p>
+
+<p>&quot;Then we can go to Siberia?&quot;</p>
+
+<p>&quot;In less than a month. The big airship needs some repairs, and then
+we'll be off.&quot;</p>
+
+<p>The Russian said nothing, but he looked his thanks to Tom, and the
+manner in which he grasped the hand of our hero showed his deep
+feelings.</p>
+
+<p>The glider was given several more trials, and each time it worked
+better. Tom decided to change some of the weights, and he devoted all
+his time to this alteration, while Ned, Mr. Damon, and the others
+labored to get the big airship in shape for the long trip to the land of
+the exiles.</p>
+
+<p>So anxious was Tom to get started, that he put in several nights working
+on the glider. Ned occasionally came over to help him, while Mr. Damon
+was on hand as often as his wife would allow. Mr. Petrofsky spent his
+nights writing to friends in Russia, hoping to get some clew as to the
+whereabouts of his brother.</p>
+
+<p>It was on one of these nights, when Tom and Ned were laboring hard, with
+Eradicate to help them that an incident occurred which worried them all
+not a little. Tom was adjusting some of the new weights on the sliding
+rods, and called to Ned:</p>
+
+<p>&quot;I say, old man, hand me that big monkey wrench, will you. I can't
+loosen this nut with the small one. You'll find it on the bench by that
+back window.&quot;</p>
+
+<p>As Ned went to get the tool he looked from the casement. He started,
+stood staring through the glass for a moment into the outer darkness,
+and then cried out:</p>
+
+<p>&quot;Tom, we're being watched! There are some spies outside!&quot;</p>
+
+<p>&quot;What?&quot; exclaimed the young inventor &quot;Where are they? Who are they?&quot;</p>
+
+<p>&quot;I don't know. Those Russian police, maybe out front, and maybe we can
+catch them!&quot;</p>
+
+<p>Grabbing up the big monkey wrench, Ned made a dash for the large sliding
+doors, followed by Tom who had an iron bar, and Eradicate with a small
+pair of pliers.</p>
+
+<p>&quot;By golly!&quot; cried the colored man, &quot;ef I gits 'em I'll pinch dere noses
+off!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_X" id="CHAPTER_X" />CHAPTER X</h2>
+
+<h3>OFF IN THE AIRSHIP</h3>
+
+
+<p>Going from the brightly lighted shop into the darkness of the night,
+illuminated as it was only by the stars, neither Tom, Ned, nor
+Eradicate, could see anything at first. They had to stand still for a
+moment to accustom their eyes to the gloom.</p>
+
+<p>&quot;Can you see them?&quot; cried Tom to his chum.</p>
+
+<p>&quot;No, but I can hear them! Over this way!&quot; yelled Ned, and then, being
+able to dimly make out objects, so he would not run into them, he
+started off, followed by the young inventor.</p>
+
+<p>Tom could hear several persons running away now, but he could see no
+one, and from the sound he judged that the spies, if such they were,
+were hurrying across the fields that surrounded the shop.</p>
+
+<p>It was almost a hopeless task to pursue them, but the two lads were not
+the kind that give up. They rushed forward, hoping to be able to grapple
+with those who had looked in the shop window, but it was not to be.</p>
+
+<p>The sound of the retreating footsteps became more and more faint, until
+finally they gave no clew to follow.</p>
+
+<p>&quot;Better stop,&quot; advised Tom. &quot;No telling where we'll end up if we keep on
+running. Besides it might be dangerous.&quot;</p>
+
+<p>&quot;Dangerous; how?&quot; panted Ned.</p>
+
+<p>&quot;They might dodge around, and wait for us behind some tree or bush.&quot;</p>
+
+<p>&quot;An' ef dat Foger feller am around he jest as soon as not fetch one ob
+us a whack in de head,&quot; commented Eradicate grimly.</p>
+
+<p>&quot;Guess you're about right,&quot; admitted Ned. &quot;There isn't much use keeping
+on. We'll go back.&quot;</p>
+
+<p>&quot;What sort of fellows were they?&quot; asked Tom, when, after a little
+further search, the hunt was given up. &quot;Could you see them well, Ned?&quot;</p>
+
+<p>&quot;Not very good. Just as I went to get you that wrench I noticed two
+faces looking in the window. I must have taken them by surprise, for
+they dodged down in an instant. Then I yelled, and they ran off.&quot;</p>
+
+<p>&quot;Did you see Andy Foger?&quot;</p>
+
+<p>&quot;No, I didn't notice him.&quot;</p>
+
+<p>&quot;Was either of them one of the spies who had Mr. Petrofsky in the hut?&quot;</p>
+
+<p>&quot;I didn't see those fellows very well, you remember, so I couldn't say.&quot;</p>
+
+<p>&quot;That's so, but I'll bet that's who they were.&quot;</p>
+
+<p>&quot;What do you think they're after, Tom?&quot;</p>
+
+<p>&quot;One of two things. They either want to get our Russian friend into
+their clutches again, or they're after me&mdash;to try to stop me from going
+to Siberia.&quot;</p>
+
+<p>&quot;Do you think they'd go to such length as that?&quot;</p>
+
+<p>&quot;I'm almost sure they would. Those Russian police are wrong, of course,
+but they think Mr. Petrofsky is an Anarchist or something like that, and
+they think they're justified in doing anything to get him back to the
+Siberian mines. And once the Russian government sets out to do a thing
+it generally does it&mdash;I'll give 'em credit for that.&quot;</p>
+
+<p>&quot;But how do you suppose they know you're going to Russia?&quot;</p>
+
+<p>&quot;Say, those fellows have ways of getting information you and I would
+never dream of. Why, didn't you read the other day how some fellow who
+was supposed to be one of the worst Anarchists ever, high up in making
+bombs, plotting, and all that sort of thing&mdash;turned out to be a police
+spy? They get their information that way. I shouldn't be surprised but
+what some of the very people whom Mr. Petrofsky thinks are his friends
+are spies, and they send word to headquarters of every move he makes.&quot;</p>
+
+<p>&quot;Why don't you warn him?&quot;</p>
+
+<p>&quot;He knows it as well as I do. The trouble is you can't tell who the
+spies are until it's too late. I'm glad I'm not mixed up in that sort of
+thing. If I can get to Siberia, help Mr. Petrofsky rescue his brother,
+and get hold of some of that platinum I'll be satisfied. Then I won't go
+back to the land of the Czar, once I get away from there.&quot;</p>
+
+<p>&quot;That's right. Well, let's go back and work on the glider.&quot;</p>
+
+<p>&quot;And we'll have Eradicate patrolling about the shop to make sure we're
+not spied on again.&quot;</p>
+
+<p>&quot;By golly! Ef I sees any oh 'em, I suah will pinch 'em!&quot; cried the
+colored man, as he clicked the pliers.</p>
+
+<p>But there was no further disturbance that night, and, when Tom and Ned
+ceased work, they had made good progress toward finishing the air
+glider.</p>
+
+<p>The big airship was almost ready to be given a trial flight, with her
+motors tuned up to give more power, and as soon as the Russian exile had
+a little more definite information as to the possible whereabouts of his
+brother, they could start.</p>
+
+<p>In the days that followed Tom and his friends worked hard. The air
+glider was made as nearly perfect as any machine is, and in a fairly
+stiff gale, that blew up about a week later, Tom did some things in it
+that made his friends open their eyes. The young inventor had it under
+nearly as good control as he had his dirigible balloons or aeroplanes.</p>
+
+<p>The big airship, too, was made ready for the long voyage, extra large
+storage tanks for gasolene being built in, as it was doubtful if they
+could get a supply in Siberia without arranging for it in advance, and
+this they did not want to do. Besides there was the long ocean flight to
+provide for.</p>
+
+<p>&quot;But if worst comes to worst I can burn kerosene in my motor,&quot; Tom
+explained, for he had perfected an attachment to this end. &quot;You can get
+kerosene almost anywhere in Russia.&quot;</p>
+
+<p>At last word was received from Russia, from some Revolutionist friends
+of the exile, stating that his brother was supposed to be working in a
+certain sulphur mine north of the Iablonnoi mountains, and half way
+between that range and the city of Iakutsk.</p>
+
+<p>&quot;But it might be a salt mine, just as well,&quot; said Mr. Petrofsky, when he
+told the boys the news. &quot;Information about the poor exiles is hard to
+get&quot;</p>
+
+<p>&quot;Well, we'll take a chance!&quot; cried Tom determinedly.</p>
+
+<p>The preparations went on, and by strict watchfulness none of the spies
+secured admission to the shop where the air glider was being finished.
+The big airship was gotten in shape for the voyage, and then, after a
+final trial of the glider, it was taken apart and put aboard the Falcon,
+ready for use on the gale-swept plains of Siberia.</p>
+
+<p>The last of the stores, provisions and supplies were put in the big car
+of the airship, a route had been carefully mapped out, and Tom, after
+saying good-bye to Mary Nestor, his father, the housekeeper, and
+Eradicate, took his place in the pilot house of the airship one pleasant
+morning at the beginning of Summer.</p>
+
+<p>&quot;Don't you wish you were going, Rad?&quot; the young inventor asked, for the
+colored man had decided to stay at home.</p>
+
+<p>&quot;No indeedy, Massa Tom,&quot; was the answer. &quot;Dat's a mighty cold country in
+Shebeara, an' I laik warm wedder.&quot;</p>
+
+<p>&quot;Well, take care of yourself and Boomerang,&quot; answered Tom with a laugh.
+Then he pulled the lever that sent a supply of gas into the big bag, and
+the ship began to rise.</p>
+
+<p>&quot;I guess we've given those spies the slip,&quot; remarked Ned, as they rose
+from the ground calling good-byes to the friends they left behind.</p>
+
+<p>&quot;I hope so,&quot; agreed Tom, but could he have seen two men, of sinister
+looks, peering at the slowly-moving airship from the shelter of a glove
+of trees, not far off, he might have changed his opinion, and so would
+Ned.</p>
+
+<p>Then, as the airship gathered momentum, it fairly sprang into the air,
+and a moment later, the big propellers began revolving. They were off on
+their long voyage to find the lost platinum mine, and rescue the exile
+of Siberia.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XI" id="CHAPTER_XI" />CHAPTER XI</h2>
+
+<h3>A STORM AT SEA</h3>
+
+
+<p>Tom had the choice of two routes in making his voyage to far-off
+Siberia. He could have crossed the United States, sailed over the
+Pacific ocean, and approached the land of the Czar from the western
+coast above Manchuria. But he preferred to take the Atlantic route,
+crossing Europe, and so sailing over Russia proper to get to his
+destination. There were several reasons for this.</p>
+
+<p>The water voyage was somewhat shorter, and this was an important
+consideration when there was no telling when he might have an accident
+that would compel him to descend. On the Atlantic he knew there would be
+more ships to render assistance if it was needed, although he hoped he
+would not have to ask for it.</p>
+
+<p>&quot;Then, too,&quot; he said to Ned, when they were discussing the matter, &quot;we
+will have a chance to see some civilized countries if we cross Europe,
+and we may land near Paris.&quot;</p>
+
+<p>&quot;Paris!&quot; cried Ned. &quot;What for?&quot;</p>
+
+<p>&quot;To renew our supply of gasolene, for one thing,&quot; replied the young
+inventor. &quot;Not that we will be out when we arrive, but if we take on
+more there we may not have to get any in Russia. Besides, they have a
+very good quality in France, so all told, I think the route over Europe
+to be the best.&quot;</p>
+
+<p>Ned agreed with him, and so did Mr. Petrofsky. As for Mr. Damon, he was
+so busy getting his sleeping room in order, and blessing everything he
+could think of, that he did not have time to talk much. So the eastern
+route was decided on, and as the big airship, carrying our friends,
+their supplies, and the wonderful air glider rose higher and higher, Tom
+gradually brought her around so that the pointed nose of the gas bag
+aimed straight across the Atlantic.</p>
+
+<p>They were over the ocean on the second day out, for Tom did not push the
+craft to her limit of speed, now they had time to consider matters at
+their leisure, for they had been rather hurried on leaving.</p>
+
+<p>The machinery was working as nearly to perfection as it could be
+brought, and Tom, after finding out that his craft would answer equally
+well as a dirigible balloon or an aeroplane, let it sail along as the
+latter.</p>
+
+<p>&quot;For,&quot; he said, &quot;we have a long trip ahead of us and we need to save
+all the elevating gas we can save. If worst comes to worst, and we can't
+navigate as an aeroplane any more, we can even drift along as a
+dirigible. But while we have the gasolene we might as well make speed
+and be an aeroplane.&quot;</p>
+
+<p>The others agreed with him, and so it was arranged. Tom, when he had
+seen to it that his craft was working well, let Ned take charge and
+devoted himself to seeing that all the stores and supplies were in order
+for quick use.</p>
+
+<p>Of course, until they were nearer the land of the Czar, and that part of
+Siberia where Mr. Petrofsky's brother was held as an exile, they could
+do little save make themselves as comfortable as possible in the
+airship. And this was not hard to do.</p>
+
+<p>Naturally, in a craft that had to carry a heavy load, and lift itself
+into the air, as well as propel itself along, not many things could be
+taken. Every ounce counted. Still our friends were not without their
+comforts. There was a well stocked kitchen, and Mr. Damon insisted on
+installing himself as cook. This had been Eradicate's work but the
+eccentric man knew how to do almost everything from making soup to
+roasting a chicken, and he liked it. So he was allowed free run of the
+galley.</p>
+
+<p>Tom and Ned spent much time in the steering tower or engine room, for,
+though all of the machinery was automatic, there was need of almost
+constant attention, though there was an arrangement whereby in case of
+emergency, the airship would steer herself in any set direction for a
+certain number of hours.</p>
+
+<p>There were ample sleeping quarters for six persons, a living room and a
+dining saloon. In short the Falcon was much like Tom's Red Cloud, only
+bigger and better. There was even a phonograph on board so that music,
+songs, and recitations could be enjoyed.</p>
+
+<p>&quot;Bless my napkin! but this is great!&quot; exclaimed Mr. Damon, about noon of
+the second day, when they had just finished dinner and looked down
+through the glass windows in the bottom of the cabin at the rolling
+ocean below them. &quot;I don't believe many persons have such opportunities
+as we have.&quot;</p>
+
+<p>&quot;I'm sure they do not,&quot; added Mr. Petrofsky. &quot;I can hardly think it
+true, that I am on my way back to Siberia to rescue my dear brother.&quot;</p>
+
+<p>&quot;And such good weather as we're having,&quot; spoke Ned. &quot;I'm glad we didn't
+start off in a storm, for I don't exactly like them when we're over the
+water.&quot;</p>
+
+<p>&quot;We may get one yet,&quot; said Tom. &quot;I don't just like the way the barometer
+is acting. It's falling pretty fast.&quot;</p>
+
+<p>&quot;Bless my mercury tube!&quot; cried Mr. Damon. &quot;I hope we have no bad luck on
+this trip.&quot;</p>
+
+<p>&quot;Oh, we can't help a storm or two,&quot; answered Tom. &quot;I guess it won't do
+any harm to prepare for it.&quot;</p>
+
+<p>So everything was made snug, and movable articles on the small exposed
+deck of the airship were lashed fast. Then, as night settled down, our
+friends gathered about in the cheerful cabin, in the light of the
+electric lamps, and talked of what lay before them.</p>
+
+<p>As Mr. Damon could steer as well as Tom or Ned, he shared in the night
+watch. But Mr. Petrofsky was not expert enough to accept this
+responsibility.</p>
+
+<p>It was when Mr. Damon finished his watch at midnight, and called Tom,
+that he remarked.</p>
+
+<p>&quot;Bless my umbrella, Tom. But I don't like the looks of the weather.&quot;</p>
+
+<p>&quot;Why, what's it doing?&quot;</p>
+
+<p>&quot;It isn't doing anything, but it's clouding up and the barometer is
+going down.&quot;</p>
+
+<p>&quot;I was afraid we were in for it,&quot; answered the young inventor. &quot;Well,
+we'll have to take what comes.&quot;</p>
+
+<p>The airship plunged on her way, while her young pilot looked at the
+various gages, noting that to hold her way against the wind that had
+risen he would have to increase the speed of the motor.</p>
+
+<p>&quot;I don't like it,&quot; murmured Tom, &quot;I don't like it,&quot; and he shook his
+head dubiously.</p>
+
+<p>With a suddenness that was almost terrifying, the storm broke over the
+ocean about three o'clock that morning. There was a terrific clap of
+thunder, a flash of lighting, and a deluge of rain that fairly made the
+staunch Falcon stagger, high in the air as she was.</p>
+
+<p>&quot;Come on, Ned!&quot; cried Tom, as he pressed the electric alarm bell
+connected with his chum's berth. &quot;I need you, and Mr. Damon, too.&quot;</p>
+
+<p>&quot;What's the matter?&quot; cried Ned, awakened suddenly from a sound sleep.</p>
+
+<p>&quot;We're in a bad storm,&quot; answered Tom, &quot;and I'll have to have help. We
+need more gas, to try and rise above it.&quot;</p>
+
+<p>&quot;Bless my hanging lamp!&quot; cried Mr. Damon, &quot;I hope nothing happens!&quot;</p>
+
+<p>And he jumped from his berth as the Falcon plunged and staggered through
+the storm that was lashing the ocean below her into white billow of
+foam.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XII" id="CHAPTER_XII" />CHAPTER XII</h2>
+
+<h3>AN ACCIDENT</h3>
+
+
+<p>For a few moments it seemed as if the Falcon would surely turn turtle
+and plunge into the seething ocean. The storm had burst with such
+suddenness that Tom, who was piloting his air craft, was taken unawares.
+He had not been using much power or the airship would have been better
+able to weather the blast that burst with such fury over her. But as it
+was, merely drifting along, she was almost like a great sheet of paper.
+Down she was forced, until the high-flying spray from the waves actually
+wet the lower part of the car, and Ned, looking through one of the glass
+windows, saw, in the darkness, the phosphorescent gleam of the water so
+near to them.</p>
+
+<p>&quot;Tom!&quot; he cried in alarm. &quot;We're sinking!&quot;</p>
+
+<p>&quot;Bless my bath sponge! Don't say that!&quot; gasped Mr. Damon.</p>
+
+<p>&quot;That's why I called you,&quot; yelled the young inventor. &quot;We've got to rise
+above the storm if possible. Go to the gas machine, Ned, and turn it on
+full strength. I'll speed up the motor, and we may be able to cut up
+that way. But get the gas on as soon as you can. The bag is only about
+half full. Force in all you can!</p>
+
+<p>&quot;Mr. Damon, can you take the wheel? It doesn't make any difference which
+way we go as long as you keep her before the wind, and yank back the
+elevating rudder as far as she'll go! We must head up.&quot;</p>
+
+<p>&quot;All right, Tom,&quot; answered the eccentric man, as he fairly jumped to
+take the place of the young inventor at the helm.</p>
+
+<p>&quot;Can I do anything?&quot; asked the Russian, as Tom raced for the engine
+room, to speed the motor up to the last notch.</p>
+
+<p>&quot;I guess not. Everything is covered, unless you want to help Mr. Damon.
+In this blow it will be hard to work the rudder levers.&quot;</p>
+
+<p>&quot;All right,&quot; replied Ivan Petrofsky, and then there came another
+sickening roll of the airship, that threatened to turn her completely
+over.</p>
+
+<p>&quot;Lively!&quot; yelled Tom, clinging to various supports as he made his way to
+the engine room. &quot;Lively, all hands, or we'll be awash in another
+minute!&quot;</p>
+
+<p>And indeed it seemed that this might be so, for with the wind forcing
+her down, and the hungry waves leaping up, as if to clutch her to
+themselves, the Falcon was having anything but an easy time of it.</p>
+
+<p>It was the work of but an instant however, when Tom reached the engine
+room, to jerk the accelerator lever toward him, and the motor responded
+at once. With a low, humming whine the wheels and gears redoubled their
+speed, and the great propellers beat the air with fiercer strokes.</p>
+
+<p>At the same time Tom heard the hiss of the gas as it rushed into the
+envelope from the generating machine, as Ned opened the release valve.</p>
+
+<p>&quot;Now we ought to go up,&quot; the young inventor murmured, as he anxiously
+watched the barograph, and noted the position of the swinging pendulum
+which told of the roll and dip of the air craft.</p>
+
+<p>For a moment she hung in the balance, neither the increased speed of the
+propellers, nor the force of the gas having any seeming effect. Mr.
+Damon and the Russian, clinging to the rudder levers, to avoid being
+dashed against the sides of the pilot house, held them as far back as
+they could, to gain the full power of the elevation planes. But even
+this seemed to do no good.</p>
+
+<p>The power of the gale was such, that, even with the motor and gas
+machine working to their limit, the Falcon only held her own. She swept
+along, barely missing the crests of the giant waves.</p>
+
+<p>&quot;She's got to go up! She's got to go up!&quot; cried Tom desperately, as if
+by very will power he could send her aloft. And then, when there came a
+lull in the fierce blowing of the wind, the elevation rudder took hold,
+and like a bird that sees the danger below, and flies toward the clouds,
+the airship shot up suddenly.</p>
+
+<p>&quot;That's it!&quot; cried Tom in relief, as he noted the needle of the
+barograph swinging over, indicating an ever-increasing height. &quot;Now
+we're safe.&quot;</p>
+
+<p>They were not quite yet, but at last the power of machinery had
+prevailed over that of the elements. Through the pelting rain, and amid
+the glare of the lightning, and the thunder of heaven's artillery, the
+airship forced her way, up and up and up.</p>
+
+<p>Setting the motor controller to give the maximum power until he released
+it, Tom hastened to the gas-generating apparatus. He found Ned attending
+to it, so that it was now working satisfactorily.</p>
+
+<p>&quot;How about it, Tom?&quot; cried his chum anxiously.</p>
+
+<p>&quot;All right now, Ned, but it was a close shave! I thought we were done
+for, platinum mine, rescue of exiles, and all.&quot;</p>
+
+<p>&quot;So did I. Shall I keep on with the gas?&quot;</p>
+
+<p>&quot;Yes, until the indicator shows that the bag is full. I'm going to the
+pilot house.&quot;</p>
+
+<p>Running there, Tom found that Mr. Damon and the Russian had about all
+they could manage. The young inventor helped them and then, when the
+Falcon was well started on her upward course, Tom set the automatic
+steering machine, and they had a breathing spell.</p>
+
+<p>To get above the sweep of the blast was no easy task, for the wind
+strata seemed to be several miles high, and Tom did not want to risk an
+accident by going to such an elevation. So, when having gone up about a
+mile, he found a comparatively calm area he held to that, and the Falcon
+sped along with the occupants feeling fairly comfortable, for there was
+no longer that rolling and tumbling motion.</p>
+
+<p>The storm kept up all night, but the danger was practically over, unless
+something should happen to the machinery, and Tom and Ned kept careful
+watch to prevent this. In the morning they could look down on the
+storm-swept ocean below them, and there was a feeling of thankfulness in
+their hearts that they were not engulfed in it.</p>
+
+<p>&quot;This is a pretty hard initiation for an amateur,&quot; remarked Mr.
+Petrofsky. &quot;I never imagined I should be as brave as this in an airship
+in a storm.&quot;</p>
+
+<p>&quot;Oh, you can get used to almost anything,&quot; commented Mr. Damon.</p>
+
+<p>It was three days before the storm blew itself out and then came
+pleasant weather, during which the Falcon flew rapidly along. Our
+friends busied themselves about many things, talked of what lay before
+them, and made such plans as they could.</p>
+
+<p>It was the evening of the fifth day, and they expected to sight the
+coast of France in the morning. Tom was in the pilot house, setting the
+course for the night run, and Ned had gone to the engine room to look
+after the oiling of the motor.</p>
+
+<p>Hardly had he reached the compartment than there was a loud report, a
+brilliant flash of fire, and the machinery stopped dead.</p>
+
+<p>&quot;What is it?&quot; cried Tom, as he came in on the run, for the indicators in
+the pilot house had told him something was wrong.</p>
+
+<p>&quot;An accident!&quot; cried Ned. &quot;A breakdown, Tom! What shall we do?&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XIII" id="CHAPTER_XIII" />CHAPTER XIII</h2>
+
+<h3>SEEKING A QUARREL</h3>
+
+
+<p>There was an ominous silence in the engine room, following the flash and
+the report. The young inventor took in every bit of machinery in a quick
+glance, and he saw at once that the main dynamo and magneto had
+short-circuited, and gone out of commission. Almost instantly the
+airship began to sink, for the propellers had ceased revolving.</p>
+
+<p>&quot;Bless my barograph!&quot; cried Mr. Damon, appearing on the scene. &quot;We're
+sinking, Tom!&quot;</p>
+
+<p>&quot;It's all right,&quot; answered our hero calmly. &quot;It's a bad accident, and
+may delay us, but there's no danger. Ned, start up the gas machine,&quot; for
+they were progressing as an aeroplane then. &quot;Start that up, and we'll
+drift along as a dirigible.&quot;</p>
+
+<p>&quot;Of course! Why didn't I think of that!&quot; exclaimed Ned, somewhat
+provoked at his own want of thought. The airship was going down rapidly,
+but it was the work of but a moment to start the generator, and then the
+earthward motion was checked.</p>
+
+<p>&quot;We'll have to take our chance of being blown to France,&quot; remarked Tom,
+as he went over to look at the broken electrical machinery. &quot;But we
+ought to fetch the coast by morning with this wind. Lucky it's blowing
+our way.&quot;</p>
+
+<p>&quot;Then you can't use the propellers?&quot; asked Mr. Petrofsky.</p>
+
+<p>&quot;No,&quot; replied Tom, &quot;but if we get to France I can easily repair this
+break. It's the platinum bearings again. I do hope we'll locate that
+lost mine, for I need a supply of good reliable metal.</p>
+
+<p>&quot;Then we'll have to land in France?&quot; asked the Russian, and he seemed a
+trifle uneasy.</p>
+
+<p>&quot;Yes,&quot; answered Tom. &quot;Don't you want to?&quot;</p>
+
+<p>&quot;Well, I was thinking of our safety.&quot;</p>
+
+<p>&quot;Bless my silk hat!&quot; cried Mr. Damon. &quot;Where is the danger of landing
+there? I rather hoped we could spend some time in Paris.&quot;</p>
+
+<p>&quot;There is no particular danger, unless it be comes known that I am an
+escaped exile, and that we are on our way to Siberia to rescue another
+one, and try to find the platinum mine. Then we would be in danger.&quot;</p>
+
+<p>&quot;But how are they to know it?&quot; asked Ned, who had come back from the gas
+machine.</p>
+
+<p>&quot;France, especially in Paris and the larger cities, is a hot-bed of
+political spies,&quot; answered Mr. Petrofsky. Russia has many there on the
+secret police, and while the objectors to the Czar's government are also
+there, they could do little to help us.&quot;</p>
+
+<p>&quot;I guess they won't find out about us unless we give it away,&quot; was Tom's
+opinion.</p>
+
+<p>&quot;I'm afraid they will,&quot; was the reply of the Russian. &quot;Undoubtedly word
+has been cabled by the spies who annoyed us in Shopton, that we are on
+our way over here. Of course they can't tell where we might land, but as
+soon as we do land the news will be flashed all over, and the word will
+come back that we are enemies of Russia. You can guess the rest.&quot;</p>
+
+<p>&quot;Then let's go somewhere else,&quot; suggested Mr. Damon.</p>
+
+<p>&quot;It would be the same anywhere in Europe,&quot; replied Ivan Petrofsky.
+&quot;There are spies in all the large centres.&quot;</p>
+
+<p>&quot;Well, I've got to go to Paris, or some large city to get the parts I
+need,&quot; said Tom. &quot;Unfortunately I didn't bring any along for the dynamo
+and magneto, as I should have done, and I can't get the necessary pieces
+in a small town. I'll have to depend on some big machine shop. But we
+might land in some little-frequented place, and I could go in to town
+alone.&quot;</p>
+
+<p>&quot;That might answer,&quot; spoke the Russian, and it was decided to try that.</p>
+
+<p>Meanwhile it was somewhat doubtful whether they would reach France, for
+they were dependent on the wind. But it seemed to be blowing steadily in
+the desired direction, and Tom noted with satisfaction that their
+progress was comparatively fast. He tried to repair the broken machinery
+but found that he could not, though he spent much of the night over it.</p>
+
+<p>&quot;Hurrah!&quot; cried Ned when morning came, and he had taken an observation.
+&quot;There's some kind of land over there.&quot;</p>
+
+<p>The wind freshened while they were at breakfast and using more gas so as
+to raise them higher Tom directed the course of his airship as best he
+could. He wanted to get high enough so that if they passed over a city
+they would not be observed.</p>
+
+<p>At noon it could be seen through the glass that they were over the
+outskirts of some large place, and after the Russian had taken an
+observation he exclaimed:</p>
+
+<p>&quot;The environs of Paris! We must not land there!&quot;</p>
+
+<p>&quot;We won't, if the wind holds out,&quot; remarked Tom and this good fortune
+came to them. They succeeded in landing in a field not far from a small
+village, and though several farmers wondered much as the sight of the
+big airship, it was thought by the platinum-seekers that they would be
+comparatively safe.</p>
+
+<p>&quot;Now to get the first train for Paris and get the things I need,&quot;
+exclaimed Tom. He set to work taking off the broken pieces that they
+might be duplicated, and then, having inquired at an inn for the nearest
+railroad station, and having hired a rig, the young inventor set off.</p>
+
+<p>&quot;Can you speak French?&quot; asked Mr. Petrofsky. &quot;If not I might be of
+service, but if I go to Paris I might be.&quot;</p>
+
+<p>&quot;Never mind,&quot; interrupted Tom. &quot;I guess I can parley enough to get along
+with.&quot;</p>
+
+<p>He had a small knowledge of the tongue, and with that, and knowing that
+English was spoken in many places, he felt that he could make out. And
+indeed he had no trouble. He easily found his way about the gay capital,
+and located a machine shop where a specialty was made of parts for
+automobile and airship motors. The proprietor, knowing the broken pieces
+belonged to an aeroplane, questioned Tom about his craft but the young
+inventor knew better than to give any clew that might make trouble, so
+he returned evasive answers.</p>
+
+<p>It was nearly night when he got back to the place where he had left the
+Falcon, and he found a curious crowd of rustics grouped about it.</p>
+
+<p>&quot;Has anything happened?&quot; he asked of his friends.</p>
+
+<p>&quot;No, everything is quiet, I'm glad to say,&quot; replied Mr. Petrofsky. &quot;I
+don't think our presence will create stir enough so that the news of it
+will reach the spies in Paris. Still I will feel easier when we're in
+the air again.&quot;</p>
+
+<p>&quot;It will take a day to make the repairs,&quot; said Tom, &quot;and put in the new
+pieces of platinum. But I'll work as fast as I can.&quot;</p>
+
+<p>He and Ned labored far into the night, and were at it again the next
+morning. Mr. Damon and the Russian were of no service for they did not
+understand the machinery well enough. It was while Tom was outside the
+craft, filing a piece of platinum in an improvised vise, that a
+poorly-clothed man sauntered up and watched him curiously. Tom glanced
+at him, and was at once struck by a difference between the man's attire
+and his person.</p>
+
+<p>For, though he was tattered and torn, the man's face showed a certain
+refinement, and his hands were not those of a farmer or laborer in which
+character he obviously posed.</p>
+
+<p>&quot;Monsieur has a fine airship there,&quot; he remarked to Tom.</p>
+
+<p>&quot;Oh, yes, it'll do.&quot; Tom did not want to encourage conversation.</p>
+
+<p>&quot;Doubtless from America it comes?&quot;</p>
+
+<p>The man spoke English but with an accent, and certain peculiarities.</p>
+
+<p>&quot;Maybe so,&quot; replied the young inventor.</p>
+
+<p>&quot;Is it permit to inspect the interior?&quot;</p>
+
+<p>&quot;No, it isn't,&quot; came from Tom shortly. He had hurt his finger with the
+file, and he was not in the best of humor.</p>
+
+<p>&quot;Ah, there are secrets then?&quot; persisted the stranger.</p>
+
+<p>&quot;Yes!&quot; said Tom shortly. &quot;I wish you wouldn't bother me. I'm busy, can't
+you see.&quot;</p>
+
+<p>&quot;Ah, does monsieur mean that I have poor eyesight?&quot;</p>
+
+<p>The question was snapped out so suddenly, and with such a menacing tone
+that Tom glanced up quickly. He was surprised at the look in the man's
+eyes.</p>
+
+<p>&quot;Just as you choose to take it,&quot; was the cool answer. &quot;I don't know
+anything about your eyes, but I know I've got work to do.&quot;</p>
+
+<p>&quot;Monsieur is insulting!&quot; rasped out the seeming farmer. &quot;He is not
+polite. He is not a Frenchman.&quot;</p>
+
+<p>&quot;Now that'll do!&quot; cried Tom, thoroughly aroused. &quot;I don't want to be too
+short with you, but I've really got to get this done. One side, if you
+please,&quot; and having finished what he was doing, he started toward the
+airship.</p>
+
+<p>Whether in his haste Tom did not notice where he was going, or whether
+the man deliberately got in his way I cannot say, but at any rate they
+collided and the seeming farmer went spinning to one side, falling down.</p>
+
+<p>&quot;Monsieur has struck me! I am insulted! You shall pay for this!&quot; he
+cried, jumping to his feet, and making a rush for our hero.</p>
+
+<p>&quot;All right. It was your own fault for bothering me but if you want
+anything I'll give it to you!&quot; cried Tom, striking a position of
+defense.</p>
+
+<p>The man was about to rush at him, and there would have been a fight in
+another minute, had not Mr. Petrofsky, stepping to the open window of
+the pilot house, called out:</p>
+
+<p>&quot;Tom! Tom! Come here, quick. Never mind him!&quot;</p>
+
+<p>Swinging away from the man, the young inventor rushed toward the
+airship. As he entered the pilot house he noticed that his late
+questioner was racing off in the direction of the village.</p>
+
+<p>&quot;What is it? What's the matter?&quot; he asked of the Russian. &quot;Is something
+more wrong with the airship?&quot;</p>
+
+<p>&quot;No, I just wanted to get you away from that man.</p>
+
+<p>&quot;Oh, I could take care of myself.&quot;</p>
+
+<p>&quot;I know that, but don't you see what his game was? I listened to him. He
+was seeking a quarrel with you.&quot;</p>
+
+<p>&quot;A quarrel?&quot;</p>
+
+<p>&quot;Yes. He is a police spy. He wanted to get you into a fight and then he
+and you would be arrested by the local authorities. They'd clap you into
+jail, and hold us all here. It's a game! They suspect us, Tom! The
+Russian spies have had some word of our presence! We must get away as
+quickly as we can!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XIV" id="CHAPTER_XIV" />CHAPTER XIV</h2>
+
+<h3>HURRIED FLIGHT</h3>
+
+
+<p>The announcement of Ivan Petrofsky came to Tom with startling
+suddenness. He could say nothing for a moment, and then, as he realized
+what it meant, and as he recalled the strange appearance and actions of
+the man, he understood the danger.</p>
+
+<p>&quot;Was he a spy?&quot; he asked.</p>
+
+<p>&quot;I'm almost sure he was,&quot; came the answer. &quot;He isn't one of the
+villagers, that's sure, and he isn't a tourist. No one else would be in
+this little out-of-the-way place but a police official. He is in
+disguise, that is certain.&quot;</p>
+
+<p>&quot;I believe so,&quot; agreed Tom. &quot;But what was his game?&quot;</p>
+
+<p>&quot;We are suspected,&quot; replied the Russian. &quot;I was afraid a big airship
+couldn't land anywhere, in France without it becoming known. Word must
+have been sent to Paris in the night, and this spy came out directly.&quot;</p>
+
+<p>&quot;But what will happen now?&quot;</p>
+
+<p>&quot;Didn't you see where he headed for? The village. He has gone to send
+word that his trick failed. There will be more spies soon, and we may be
+detained or thrown into jail on some pretext or other. They may claim
+that we have no license, or some such flimsy thing as that. Anything to
+detain us. They are after me, of course, and I'm sorry that I made you
+run such danger. Perhaps I'd better leave you, and&mdash;&quot;</p>
+
+<p>&quot;No, you don't!&quot; cried Tom heartily. &quot;We'll all hang together or we'll
+hang separately', as Benjamin Franklin or some of those old chaps once
+remarked. I'm not the kind to desert a friend in the face of danger.&quot;</p>
+
+<p>&quot;Bless my revolver! I should say not!&quot; cried Mr. Damon. &quot;What's it all
+about? Where's the danger?&quot;</p>
+
+<p>They told him as briefly as possible, and Ned, who had been working in
+the motor room, was also informed.</p>
+
+<p>&quot;Well, what's to be done?&quot; asked Tom. &quot;Had we better get out our
+ammunition, or shall I take out a French license.&quot;</p>
+
+<p>&quot;Neither would do any good,&quot; answered the Russian. &quot;I appreciate your
+sticking by me, and if you are resolved on that the only thing to do is
+to complete the repairs as soon as possible and get away from here.&quot;</p>
+
+<p>&quot;That's it!&quot; cried Ned. &quot;A quick flight. We can get more gasolene here,
+for lots of autos pass along the road through the village. I found that
+out. Then we needn't stop until we hit the trail for the mine in
+Siberia!&quot;</p>
+
+<p>&quot;Hush!&quot; cautioned the Russian. &quot;You can't tell who may be sneaking
+around to listen. But we ought to leave as soon as we can.&quot;</p>
+
+<p>&quot;And we will,&quot; said Tom. &quot;I've got the magneto almost fixed!&quot;</p>
+
+<p>&quot;Let's get a hustle on then!&quot; urged Ned. &quot;That fellow meant business
+from his looks. The nerve of him to try to pick a quarrel that way.&quot;</p>
+
+<p>&quot;I might have told by his manner that something was wrong,&quot; commented
+Tom, &quot;but I thought he was a fresh tramp and I didn't take any pains in
+answering him. But come on, Ned, get busy.&quot;</p>
+
+<p>They did, with such good effect that by noon the machinery was in
+running shape again, and so far there had been no evidence of the return
+of the spy. Doubtless he was waiting for instructions, and something
+might happen any minute.</p>
+
+<p>&quot;Now, Ned, if you'll see to having some gasolene brought out here, and
+the tanks filled, I'll tinker with the dynamo and get that in running
+shape,&quot; said Tom. &quot;It only needs a little adjustment of the brushes.
+Then we'll be off.&quot;</p>
+
+<p>Ned started for the village where there was a gasolene depot He fancied
+the villagers regarded him rather curiously, but he did not stop to ask
+what it meant. Another odd fact was that the usual crowd of curious
+rustics about the airship was missing. It was as though they suspected
+trouble might come, and they did not want to be mixed up in it.</p>
+
+<p>Never, Ned thought, had he seen a man so slow at getting ready the
+supply of gasolene. He was to take it out in a wagon, but first he
+mislaid the funnel, then the straining cloth, and finally he discovered
+a break in the harness that needed mending.</p>
+
+<p>&quot;I believe he's doing it on purpose to delay us,&quot; thought the youth,
+&quot;but it won't do to say anything. Something is in the wind.&quot; He helped
+the man all he could, and urged him in every way he knew, but the fellow
+seemed to have grown suddenly stupid, and answered only in French,
+though previously he had spoken some English.</p>
+
+<p>But at last Ned, by dint of hard work, got him started, and rode on the
+gasolene wagon with him. Once at the anchored airship, Tom and the
+others filled the reserve tanks themselves, though the man tried to
+help. However he did more harm than good, spilling several gallons of
+the fluid.</p>
+
+<p>&quot;Oh, get away, and let us do it!&quot; cried Tom at last. &quot;I know what you&mdash;&quot;</p>
+
+<p>&quot;Easy!&quot; cautioned Mr. Petrofsky, with a warning look, and Tom subsided.</p>
+
+<p>Finally the tanks were full, the man was paid, and he started to drive
+away.</p>
+
+<p>&quot;Now to make a quick flight!&quot; cried Tom, as he took his place in the
+pilot house, while Ned went to the engine room. &quot;Full speed, Ned!&quot;</p>
+
+<p>&quot;Yes, and we'll need it, too,&quot; said the Russian.</p>
+
+<p>&quot;Why?&quot; asked Tom.</p>
+
+<p>&quot;Look!&quot; was the answer, and Ivan Petrofsky pointed across the field over
+which, headed toward the airship, came the man who had sought a quarrel
+with Tom. And with the spy were several policemen in uniform, their
+short swords dangling at their sides.</p>
+
+<p>&quot;They're after us!&quot; cried Mr. Damon. &quot;Bless my chronometer they're after
+us!&quot;</p>
+
+<p>&quot;Start the motor, Ned! Start the motor!&quot; cried Tom, and a moment later
+the hum of machinery was heard, while the police and the spy broke into
+a run, shouting and waving their hands.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XV" id="CHAPTER_XV" />CHAPTER XV</h2>
+
+<h3>PURSUED</h3>
+
+
+<p>Slowly the airship arose, almost too slowly to suit those on board who
+anxiously watched the oncoming officers. The latter had drawn their
+short swords, and at the sight of them Mr. Damon cried out:</p>
+
+<p>&quot;Bless my football! If they jab them into the gas bag, Tom, we're done
+for!&quot;</p>
+
+<p>&quot;They won't get the chance,&quot; answered the young inventor, and he spoke
+truly, for a moment later, as the big propellers took hold of the air,
+the Falcon went up with a rush, and was far beyond the reach of the men.
+In a rage the spy shook his fist at the fast receding craft, and one of
+the policemen drew his revolver.</p>
+
+<p>&quot;They're going to fire!&quot; cried Ned.</p>
+
+<p>&quot;They can't do much damage,&quot; answered Tom coolly. &quot;A bullet hole in the
+bag is easily repaired, and anywhere else it won't amount to anything.&quot;</p>
+
+<p>The officer was aiming his revolver at the airship, now high above his
+head, but with a quick motion the spy pulled down his companion's arm,
+and they seemed to be disputing among themselves.</p>
+
+<p>&quot;I wonder what that means?&quot; mused Mr. Damon.</p>
+
+<p>&quot;Probably they didn't want to risk getting into trouble,&quot; replied the
+Russian. &quot;There are strict laws in France about using firearms, and as
+yet we are accused of no crime. We are only suspected, and I suppose the
+spy didn't want to get into trouble. He is on foreign ground, and there
+might be international complications.&quot;</p>
+
+<p>&quot;Then you really think he was a spy?&quot; asked Tom.</p>
+
+<p>&quot;No doubt of it, and I'm afraid this is only the beginning of our
+trouble.&quot;</p>
+
+<p>&quot;In what way?&quot;</p>
+
+<p>&quot;Well, of course word will be sent on ahead about us, and every where we
+go they'll be on the watch for us. They have our movements pretty well
+covered.&quot;</p>
+
+<p>&quot;We won't make a descent until we get to Siberia,&quot; said Tom, &quot;and I
+guess there it will be so lonesome that we won't be troubled much.&quot;</p>
+
+<p>&quot;Perhaps,&quot; admitted the Russian, &quot;but we will have to be on our guard.
+Of course keeping up in the air will be an advantage but they may&mdash;&quot;</p>
+
+<p>He stopped suddenly and shrugged his shoulders.</p>
+
+<p>&quot;What were you going to say?&quot; inquired Ned.</p>
+
+<p>&quot;Oh, it's just something that might happen, but it's too remote a
+possibility to work about. We're leaving those fellows nicely behind,&quot;
+he added quickly, as though anxious to change the subject.</p>
+
+<p>&quot;Yes, at this rate we'll soon be out of France,&quot; observed Tom, as he
+speeded the ship along still more. The young inventor wondered what Mr.
+Petrofsky had been going to say, but soon after this, some of the
+repaired machinery in the motor room needed adjusting, and the young
+inventor was kept so busy that the matter passed from his mind.</p>
+
+<p>The dynamo and magneto were doing much more efficient work since Tom had
+put the new platinum in, and the Falcon was making better time than ever
+before. They were flying at a moderate height, and could see wondering
+men, women and children rush out from their houses, to gaze aloft at the
+strange sight. Paris was now far behind, and that night they were
+approaching the borders of Prussia, as Mn Petrofsky informed them, for
+he knew every part of Europe.</p>
+
+<p>The route, as laid down by Tom and the Russian, would send the airship
+skirting the southern coast of the Baltic sea, then north-west, to pass
+to one side of St. Petersburg, and then, after getting far enough to the
+north, so as to avoid the big cities, they would head due east for
+Siberia.</p>
+
+<p>&quot;In that way I think we'll avoid any danger from the Russian police,&quot;
+remarked the exile.</p>
+
+<p>For the next few days they flew steadily on at no remarkable speed, as
+the extra effort used more gasolene than Tom cared to expend in the
+motor. He realized that he would need all he had, and he did not want to
+have to buy any more until he was homeward bound, for the purchase of it
+would lead to questions, and might cause their detention.</p>
+
+<p>Mr. Damon gave his friends good meals and they enjoyed their trip very
+much, though naturally there was some anxiety about whether it would
+have a successful conclusion.</p>
+
+<p>&quot;Well, if we don't find the platinum mine we'll rescue your brother, if
+there's a possible chance!&quot; exclaimed Tom one day, as he sat in the
+pilot house with the exile. &quot;Jove! it will be great to drop down, pick
+him up, and fly away with him before those Cossacks, or whoever has him,
+know what's up.&quot;</p>
+
+<p>&quot;I'm afraid we can't make such a sensational rescue as that,&quot; replied
+Mr. Petrofsky. &quot;We'll have to go at it diplomatically. That's the only
+way to get an exile out of Siberia. We must get word to him somehow,
+after we locate him, that we are waiting to help him, and then we can
+plan for his escape. Poor Peter! I do hope we can find him, for if he is
+in the salt or sulphur mines it is a living death!&quot; and he shuddered at
+the memory of his own exile.</p>
+
+<p>&quot;How do you expect to get definite information as to where he might be?&quot;
+asked Tom.</p>
+
+<p>&quot;I think the only thing to do is to get in touch with some of the
+revolutionists,&quot; answered the Russian. &quot;They have ways and means of
+finding out even state secrets. I think our best plan will be to land
+near some small town, when we get to the edge of Siberia. If we can
+conceal the airship, so much the better. Then I can disguise myself and
+go to the village.&quot;</p>
+
+<p>&quot;Will it be safe?&quot; inquired the young inventor.</p>
+
+<p>&quot;I'll have to take that chance. It's the only way, as I am the only one
+in our party who can speak Russian.&quot;</p>
+
+<p>&quot;That's right,&quot; admitted Tom with a laugh. &quot;I'm afraid I could never
+master that tongue. It's as hard as Chinese.&quot;</p>
+
+<p>&quot;Not quite,&quot; replied his friend, &quot;but it is not an easy language for an
+American.&quot;</p>
+
+<p>They talked at some length, and then Tom noticing, by one of the
+automatic gages on the wall of the pilot house, that some of the
+machinery needed attention, went to attend to it.</p>
+
+<p>He was rather surprised, on emerging from the motor compartment, to see
+Mr. Damon standing on the open after deck of the Falcon gazing earnestly
+toward the rear.</p>
+
+<p>&quot;Star-gazing in the day time?&quot; asked Tom with a laugh.</p>
+
+<p>&quot;Bless my individuality!&quot; exclaimed the odd man. &quot;How you startled me,
+Tom! No, I'm not looking at stars, but I've been noticing a black speck
+in the sky for some time, and I was wondering whether it was my
+eyesight, or whether it really is something.&quot;</p>
+
+<p>&quot;Where is it?&quot;</p>
+
+<p>&quot;Straight to the rear,&quot; answered Mr. Damon, &quot;and it seems to be about a
+mile up. It's been hanging in the same place this ten minutes.&quot;</p>
+
+<p>&quot;Oh, I see,&quot; spoke Tom, when the speck had been pointed out to him.
+&quot;It's there all right, but I guess it's a bird, an eagle perhaps. Wait,
+I'll get a glass and we'll take a look.&quot;</p>
+
+<p>As he was taking the telescope down from its rack in the pilot house,
+Mr. Petrofsky saw him.</p>
+
+<p>&quot;What's up?&quot; asked the Russian, and the youth told him.</p>
+
+<p>&quot;Must be a pretty big bird to be seen at such a distance as it is,&quot;
+remarked Tom.</p>
+
+<p>&quot;Maybe it isn't a bird,&quot; suggested Ivan Petrofsky. &quot;I'll take a look
+myself,&quot; and, showing something of alarm in his manner, he followed Tom
+to where Mr. Damon awaited them. Ned also came out on deck.</p>
+
+<p>Quickly adjusting the glass, Tom focused it on the black speck. It
+seemed to have grown larger. Me peered at it steadily for several
+seconds.</p>
+
+<p>&quot;Is it a bird?&quot; asked Mr. Damon.</p>
+
+<p>&quot;Jove! It's another airship&mdash;a big biplane!&quot; cried Tom, &quot;and there seems
+to be three men in her.&quot;</p>
+
+<p>&quot;An aeroplane!&quot; gasped Ned.</p>
+
+<p>&quot;Bless my deflecting rudder!&quot; cried Mr. Damon. &quot;An airship in this
+out-of-the-way place?&quot; for they were flying over a desolate country.</p>
+
+<p>&quot;And they're coming right after us,&quot; added Tom, as he continued to gaze.</p>
+
+<p>&quot;I thought so,&quot; was the quiet comment of Mr. Petrofsky. &quot;That is what I
+started to say a few days ago,&quot; he went on, &quot;when I stopped, as I hardly
+believed it possible. I thought they might possibly send an aeroplane
+after us, as both the French and Russian armies have a number of fast
+ones. So they are pursuing us. I'm afraid my presence will bring you no
+end of trouble.&quot;</p>
+
+<p>&quot;Let it come!&quot; cried Tom. &quot;If they can catch up to us they've got a good
+machine. Come on, Ned, let's speed her up, and make them take more of
+our star dust.&quot;</p>
+
+<p>&quot;Wait a minute,&quot; advised the Russian, as he took the telescope from Tom,
+and viewed the ever-increasing speck behind them. &quot;Are you sure of the
+speed of this craft?&quot; he asked a moment later.</p>
+
+<p>&quot;I never saw the one yet I couldn't pull away from, even after giving
+them a start,&quot; answered the young inventor proudly. &quot;That is all but my
+little sky racer. I could let them get within speaking distance, and
+then pull out like the Congressional Limited passing a slow freight.&quot;</p>
+
+<p>&quot;Then wait a few minutes,&quot; suggested Mr. Petrofsky. &quot;That is an
+aeroplane all right, but I can't make out from what country. I'd like a
+better view, and if it's safe we can come closer.&quot;</p>
+
+<p>&quot;Oh, it's safe enough,&quot; declared Tom. &quot;I'll get things in shape for a
+quick move,&quot; and he hurried back to the machine room, while the others
+took turns looking at the oncoming aeroplane. And it was coming on
+rapidly, showing that it had tremendous power, for it was a very large
+one, carrying three men.</p>
+
+<p>&quot;How do you suppose they got on our track?&quot; asked Ned.</p>
+
+<p>&quot;Oh, we must have been reported from time to time, as we flew over
+cities or towns,&quot; replied Mr. Petrofsky. &quot;You know we're rather large,
+and can be seen from a good distance. Then too, the whole Russian secret
+police force is at the service of our enemies.&quot;</p>
+
+<p>&quot;But we're not over Russia yet,&quot; said Mr. Damon.</p>
+
+<p>Ivan Petrofsky took the telescope and peered down toward the earth. They
+were not a great way above it, and at that moment they were passing a
+small village.</p>
+
+<p>&quot;Can you tell where we are?&quot; asked the odd man.</p>
+
+<p>&quot;We are just over the border of the land of the Czar,&quot; was the quiet
+answer. &quot;The imperial flag is flying from a staff in front of one of the
+buildings down there. We are over Russia.&quot;</p>
+
+<p>&quot;And here comes that airship,&quot; called Ned suddenly.</p>
+
+<p>They gazed back with alarm, and saw that it was indeed so. The big
+aeroplane had come on wonderfully fast in the last few minutes.</p>
+
+<p>&quot;Tom! Tom!&quot; cried his chum. &quot;Better get ready to make a sprint.&quot;</p>
+
+<p>&quot;I'm all ready,&quot; calmly answered our hero. &quot;Shall I go now?&quot;</p>
+
+<p>&quot;If you can give us a few seconds longer I may be able to tell who is
+after us,&quot; remarked Mr. Petrofsky, turning his telescope on the craft
+behind them.</p>
+
+<p>&quot;I can let them get almost up to us, and get away,&quot; replied Tom.</p>
+
+<p>The Russian did not answer. He was gazing earnestly at the approaching
+aeroplane. A moment later he took the glass down from his eye.</p>
+
+<p>&quot;It's our spy again,&quot; he said. &quot;There are two others with him. That is
+one of the aeroplanes owned by the secret police. They are stationed all
+over Europe, ready for instant service, and they're on our trail.&quot;</p>
+
+<p>The pursuing craft was so near that the occupants could easily be made
+out with the naked eye, but it needed the glass to distinguish their
+features, and Mr. Petrofsky had done this.</p>
+
+<p>&quot;Shall I speed up?&quot; cried Tom.</p>
+
+<p>&quot;Yes, get away as fast as you can!&quot; shouted the Russian. &quot;No telling
+what they may do,&quot; and then, with a hum and a roar the motor of the
+Falcon increased its speed, and the big airship shot ahead.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XVI" id="CHAPTER_XVI" />CHAPTER XVI</h2>
+
+<h3>THE NIHILISTS</h3>
+
+
+<p>From the pursuing aircraft came a series of sharp explosions that fairly
+rattled through the clear air.</p>
+
+<p>&quot;Look out for bombs!&quot; yelled Ned.</p>
+
+<p>&quot;Bless my safety match!&quot; cried Mr. Damon. &quot;Are they anarchists?&quot;</p>
+
+<p>&quot;It's only their motor hack-firing,&quot; cried Tom. &quot;It's all right, They're
+done for now, well leave them behind.&quot;</p>
+
+<p>He was a true prophet, for with a continued rush and a roar the airship
+of our friends opened up a big gap between her rear rudders and the
+forward planes of the craft that was chasing her. The three men were
+working frantically to get their motor in shape, but it was a useless
+task.</p>
+
+<p>A little later, finding that they were losing speed, the three police
+agents, or spies, whatever they might be, had to volplane to earth and
+there was no need for the Falcon to maintain the terrific pace, to which
+Tom had pushed her. The pursuit was over.</p>
+
+<p>&quot;Well, we got out of that luckily,&quot; remarked Ned, as he looked down to
+where the spies were making a landing. &quot;I guess they won't try that
+trick again.&quot;</p>
+
+<p>&quot;I'm afraid they will,&quot; predicted Mr. Petrofsky. &quot;You don't know these
+government agents as I do. They never give up. They'll fix their engine,
+and get on our trail again.&quot;</p>
+
+<p>&quot;Then we'll make them work for what they get,&quot; put in Tom, who, having
+set the automatic speed accelerator, had rejoined his companions. &quot;We'll
+try a high flight and if they can pick up a trail in the air, and come
+up to us, they're good ones!&quot;</p>
+
+<p>He ran to the pilot house, and set the elevation rudder at its limit.
+Meanwhile the spies were working frantically over their motor, trying to
+get it is shape for the pursuit. But soon they realized that this was
+out of the question, for the Falcon was far away, every moment going
+higher and higher, until she was lost to sight beyond the clouds.</p>
+
+<p>&quot;I guess they'll have their own troubles now,&quot; remarked Ned. &quot;We've seen
+the last of them.&quot;</p>
+
+<p>&quot;Don't be too sure,&quot; spoke the Russian. We may have them after us again.
+We're over the land of the Czar now, and they'll have everything their
+own way. They'll want to stop me at any cost.&quot;</p>
+
+<p>&quot;Do you think they suspect that we're after the platinum?&quot; asked Tom.</p>
+
+<p>&quot;They may, for they know my brother and I were the only ones who ever
+located it, though unless I get in the exact neighborhood I'd have
+trouble myself picking it out. I remember some of the landmarks, but my
+brother is better at that sort of work than I am. But I think what they
+are mostly afraid of is that I have some designs on the life of, say one
+of the Grand Dukes, or some high official. But I am totally opposed to
+violent measures,&quot; went on Mr. Petrofsky. &quot;I believe in a campaign of
+education, to gain for the down-trodden people what are their rights.&quot;</p>
+
+<p>&quot;Do you think they know you are coming to rescue your brother?&quot; asked
+Tom.</p>
+
+<p>&quot;I don't believe so. And I hope not, for once they suspected that, they
+would remove him to some place where I never could locate him.&quot;</p>
+
+<p>Calmer feelings succeeded the excitement caused by the pursuit, and our
+friends, speculating on the matter, came to the conclusion that the
+aeroplane must have started from some Prussian town, as Mr. Petrofsky
+said there were a number of Russian secret police in that country. The
+Falcon was now speeding along at a considerable height, and after
+running for a number of miles, sufficient to preclude the possibility
+that they could be picked up by the pursuing aeroplane, Tom sent his
+craft down, as the rarefied atmosphere made breathing difficult.</p>
+
+<p>It was about three days after the chase when, having carefully studied
+the map and made several observations through the telescope of the
+Country over which they were traveling, that Ivan Petrofsky said:</p>
+
+<p>&quot;If it can be managed, Tom, I think we ought to go down about here.
+There is a Russian town not far away, and I know a few friends there,
+There is a large stretch of woodland, and the airship can be easily
+concealed there.</p>
+
+<p>&quot;All right,&quot; agreed the young inventor, &quot;down we go, and I hope you get
+the information want.&quot;</p>
+
+<p>Flying high so as to keep out of the observation of the inhabitants of
+the Russian town, the young inventor sent his craft in a circle about
+it, and, having seen a clearing in the forest, he made a landing there,
+the Falcon having come to rest a second time since leaving Shopton, now
+several thousand miles away.</p>
+
+<p>&quot;We'll hide here for a few days,&quot; observed Tom, &quot;and you can spend as
+much time in town as you like, Mr. Petrofsky,&quot;</p>
+
+<p>The Russian, disguising himself by trimming his beard, and putting on a
+pair of dark spectacles, went to the village that afternoon.</p>
+
+<p>While he was gone Tom, Ned and Mr. Damon busied themselves about the
+airship, making a few repairs that could not very well be done while it
+was in motion. As night came on, and the exile did not return, Tom began
+to get a little worried, and he had some notion of going to seek him,
+but he knew it would not be safe.</p>
+
+<p>&quot;He'll come all right,&quot; declared Ned, as they sat down to supper. All
+about them was an almost impenetrable forest, cut here and there by
+paths along which, as Mr. Petrofsky had told them, the wood cutters
+drove their wagons.</p>
+
+<p>It was quite a surprise therefor, when, as they were leaving the table,
+a knock was heard on the cabin door.</p>
+
+<p>&quot;Bless my electric bell!&quot; cried Mr. Damon. &quot;Who can that be?&quot;</p>
+
+<p>&quot;Mr. Petrofsky of course,&quot; answered Ned.</p>
+
+<p>&quot;He wouldn't knock&mdash;he'd walk right in,&quot; spoke Tom, as he went to the
+door. As he opened it he saw several dark-bearded men standing there,
+and in their midst Mr. Petrofsky.</p>
+
+<p>For one moment our hero feared that his friend had been arrested and
+that the police bad come to take the rest of them into custody. But a
+word from the exile reassured him.</p>
+
+<p>&quot;These are some of my friends,&quot; said Mr. Petrofsky simply. &quot;They are
+Nihilists which I am not, but&mdash;&quot;</p>
+
+<p>&quot;Nihilists yes! Always!&quot; exclaimed one who spoke English. &quot;Death to the
+Czar and the Grand Dukes! Annihilation to the government!&quot;</p>
+
+<p>&quot;Gently my friend, gently,&quot; spoke Mr. Petrofsky. &quot;I am opposed to
+violence you know.&quot; And then, while his new friends gazed wonderingly at
+the strange craft, he led them inside. Tom and the others were hardly
+able to comprehend what was about to take place.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XVII" id="CHAPTER_XVII" />CHAPTER XVII</h2>
+
+<h3>ON TO SIBERIA</h3>
+
+
+<p>&quot;Has anything happened?&quot; asked Tom. &quot;Are we suspected? Have they come to
+warn us?&quot;</p>
+
+<p>&quot;No, everything is all right, so far,&quot; answered Ivan Petrofsky. &quot;I
+didn't have the success I hoped for, and we may have to wait here for a
+few days to get news of my brother. But these men have been very kind to
+me,&quot; he went on, &quot;and they have ways of getting information that I have
+not. So they are going to aid me.&quot;</p>
+
+<p>&quot;That's right!&quot; exclaimed the one who had first spoken. &quot;We will yet win
+you to our cause, Brother Petrofsky. Death to the Czar and the Grand
+Dukes!&quot;</p>
+
+<p>&quot;Never!&quot; exclaimed the exile firmly. &quot;Peaceful measures will succeed.
+But I am grateful for what you can do for me. They heard me describe
+your wonderful airship,&quot; he explained to Tom, &quot;and wanted to see for
+themselves.&quot;</p>
+
+<p>The Nihilists were made welcome after Mr. Petrofsky had introduced them.
+They had strange and almost unpronounceable names for the ears of our
+friends, and I will not trouble you with them, save to say that the one
+who spoke English fairly well, and who was the leader, was called
+Nicolas Androwsky. There was much jabbering in the Russian tongue, when
+Mr. Petrofsky and Mr. Androwsky took the others about the craft,
+explaining how it worked.</p>
+
+<p>&quot;I can't show you the air glider,&quot; said Tom, who naturally acted as
+guide, &quot;as it would take too long to put together, and besides there is
+not enough wind here to make it operate.&quot;</p>
+
+<p>&quot;Then you need much wind?&quot; asked Nicolas Androwsky.</p>
+
+<p>&quot;The harder the gale the better she flies,&quot; answered Tom proudly.</p>
+
+<p>&quot;Bless my sand bag, but that's right!&quot; exclaimed Mr. Damon, who, up to
+now had not taken much part in the conversation. He followed the party
+about the airship, keeping in the rear, and he eyed the Nihilists as if
+he thought that each one had one or more dynamite bombs concealed on his
+person.</p>
+
+<p>&quot;Ha!&quot; exclaimed Mr. Androwsky, turning suddenly to the odd man. &quot;Are you
+not one of us? Do you not believe that this terrible kingdom should be
+destroyed&mdash;made as nothing, and a new one built from its ashes? Are you
+not one of us?&quot; and with a quick gesture he reached into his pocket.</p>
+
+<p>&quot;No! No!&quot; exclaimed Mr. Damon, starting back. &quot;Bless my election ticket!
+No! Never could I throw a bomb. Please don't give me one.&quot; Mr. Damon
+started to run away.</p>
+
+<p>&quot;A bomb!&quot; exclaimed the Nihilist, and then he drew from his pocket some
+pamphlets printed in Russian. &quot;I have no bombs. Here are some of the
+tracts we distribute to convert unbelievers to our cause,&quot; he went on.
+&quot;Read them and you will understand what we are striving for. They will
+convert you, I am sure.&quot;</p>
+
+<p>He went on, following the rest of the party, while Mr. Damon dropped
+back with Ned.</p>
+
+<p>&quot;Bless my gas meter!&quot; gasped the odd man, as he stared at the
+queerly-printed documents in his hand. &quot;I thought he was going to give
+me a bomb to throw!&quot;</p>
+
+<p>&quot;I don't blame you,&quot; said Ned in a low voice. &quot;They look like desperate
+men, but probably they have suffered many hardships, and they think
+their way of righting a wrong is the only way. I suppose you'll read
+those tracts,&quot; he added with a smile.</p>
+
+<p>&quot;Hum! I'm afraid not,&quot; answered Mr. Damon. &quot;I might just as well try to
+translate a Chinese laundry check. But I'll save 'em for souvenirs,&quot; and
+he carefully put them in his pocket, as if he feared they might
+unexpectedly turn into a bomb and blow up the airship.</p>
+
+<p>The tour of the craft was completed and the Nihilists returned to the
+comfortable cabin where, much to their surprise, they were served with a
+little lunch, Mr. Damon bustling proudly about from the table to the
+galley, and serving tea as nearly like the Russians drink it as
+possible.</p>
+
+<p>&quot;Well, you certainly have a wonderful craft here&mdash;wonderful,&quot; spoke Mr.
+Androwsky. &quot;If we had some of these in our group now, we could start
+from here, hover over the palace of the Czar, or one of the Grand Dukes,
+drop a bomb, utterly destroy it, and come back before any of the hated
+police would be any the wiser.&quot;</p>
+
+<p>&quot;I'm afraid I can't lend it to you,&quot; said Tom, and he could scarcely
+repress a shudder at the terrible ideas of the Nihilists.</p>
+
+<p>&quot;It would never do,&quot; agreed Ivan Petrofsky. &quot;The campaign of education
+is the only way.&quot;</p>
+
+<p>There were gutteral objections on the part of the other Russians, and
+they turned to more cheerful subjects of talk.</p>
+
+<p>&quot;What are your plans?&quot; asked Tom of the exile. &quot;You say you can get no
+trace here of your brother?&quot;</p>
+
+<p>&quot;No, he seems to have totally disappeared from sight. Usually we enemies
+of the government can get some news of a prisoner, but poor Peter is
+either dead, or in some obscure mine, which is hidden away in the
+forests or mountains.&quot;</p>
+
+<p>&quot;Maybe he is in the lost platinum mine,&quot; suggested Ned.</p>
+
+<p>&quot;No, that has not been discovered,&quot; declared the exile, &quot;or my friends
+here would have heard of it. That is still to be found.&quot;</p>
+
+<p>&quot;And we'll do it, in the air glider,&quot; declared Tom. &quot;By the way, Mr.
+Petrofsky, would it not be a good plan to ask your friends the location
+of the place where the winds constantly blow with such force. It occurs
+to me that in some such way we might locate the mine.&quot;</p>
+
+<p>&quot;It would be of use if there was only one place of the gales,&quot; replied
+the exile. &quot;But Siberia has many such spots in the mountain
+fastnesses&mdash;places which, by the peculiar formation of the land, have
+constant eddys of air over them. No, the only way is for us to go as
+nearly as possible to the place where my brother and I were imprisoned,
+and search there.&quot;</p>
+
+<p>&quot;But what is that you said about us having to stay here, to get some
+news of your brother?&quot; asked Tom.</p>
+
+<p>&quot;I had hoped to get some information here,&quot; resumed Mr. Petrofsky, &quot;but
+my friends here are without news. However, they are going to make
+inquiries, and we will have to stay here until they have an answer. It
+will be safe, they think, as there are not many police in town, and the
+local authorities are not very efficient. So the airship will remain
+here, and, from time to time I will go to the village, disguised, and
+see if any word has come.&quot;</p>
+
+<p>&quot;And we will bring you news as soon as we get it,&quot; promised Mr.
+Androwsky. &quot;You are not exactly one of us, but you are against the
+government, and, therefor, a brother. But you will be one of us in
+time.&quot;</p>
+
+<p>&quot;Never,&quot; replied the exile with a smile. &quot;My only hope now is to get my
+brother safely away, and then we will go and live in free America. But,
+Tom, I hope I won't put you out by delaying here.&quot;</p>
+
+<p>&quot;Not a bit of it. More than half the object of our trip is to rescue
+your brother. We must do that first. Now as to details,&quot; and they fell
+to discussing plans. It was late that night when the Nihilists left the
+airship, first having made a careful inspection to see that they were
+not spied upon. They promised at once to set to work their secret
+methods of getting information.</p>
+
+<p>For several days the airship remained in the vicinity of the Russian
+town. Our friends were undisturbed by visitors, as they were in a forest
+where the villagers seldom came and the nearest wood-road was nearly
+half a mile off.</p>
+
+<p>Every day either Mr. Petrofsky went in to town to see the Nihilists or
+some of them came out to the Falcon, usually at night.</p>
+
+<p>&quot;Well, have you any word yet?&quot; asked Tom, after about a week had passed.</p>
+
+<p>&quot;Nothing yet,&quot; answered the exile, and his tone was a bit hopeless. &quot;But
+we have not given up. All the most likely places have been tried, but he
+is not there. We have had traces of him, but they are not fresh ones. He
+seems to have been moved from one mine to another. Probably they feared
+I would make an attempt to rescue him. But I have not given up. Me is
+somewhere in Siberia.&quot;</p>
+
+<p>&quot;And we'll find him!&quot; cried Tom with enthusiasm.</p>
+
+<p>For three days more they lingered, and then, one night, when they were
+just getting ready to retire, there was a knock on the cabin door. Mr.
+Petrofsky had been to the village that day, and had received no news. He
+had only returned about an hour before.</p>
+
+<p>&quot;Some one's knocking,&quot; announced Ned, as if there could be any doubt of
+it.</p>
+
+<p>&quot;Bless my burglar alarm!&quot; gasped Mr. Damon.</p>
+
+<p>&quot;I'll see who it is,&quot; volunteered Mr. Petrofsky, and Tom looked toward
+the rack of loaded rifles, for that day a man, seemingly a wood cutter
+had passed close to the airship, and had hurried off as if he had seen a
+ghost.</p>
+
+<p>The knock was repeated. It might be their friends, and it might be&mdash;</p>
+
+<p>But Mr. Petrofsky solved the riddle by throwing back the portal, and
+there stood the Nihilist, Nicolas Androwsky.</p>
+
+<p>&quot;Is there anything the matter?&quot; asked the exile quickly.</p>
+
+<p>&quot;We have news,&quot; was the cautious answer, as the Nihilist slipped in, and
+closed the door behind him.</p>
+
+<p>&quot;News of my brother?&quot;</p>
+
+<p>&quot;Of your brother! He is in a sulphur mine in the Altai Mountains, near
+the city of Abakansk.&quot;</p>
+
+<p>&quot;Where's that?&quot; asked Tom for he had forgotten most of his Russian
+geography.</p>
+
+<p>&quot;The Altai Mountains are a range about the middle of Siberia,&quot; explained
+Mr. Petrofsky. &quot;They begin at the Kirghiz Steppes, and run west. It is a
+wild and desolate place. I hope we can find poor Peter alive.&quot;</p>
+
+<p>&quot;And this city of Abakansk?&quot; went on the young inventor.</p>
+
+<p>&quot;It is many miles from here, but I can give you a good map,&quot; said the
+Nihilist. &quot;Some of our friends are there,&quot; he added with a half-growl.
+&quot;I wish we could rescue all of them.&quot;</p>
+
+<p>&quot;We'd like to,&quot; spoke Tom. &quot;But I fear it is impossible. But now that we
+have a clew, come on! Let's start at once! It may be dangerous to stay
+here. On to Siberia!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XVIII" id="CHAPTER_XVIII" />CHAPTER XVIII</h2>
+
+<h3>IN A RUSSIAN PRISON</h3>
+
+
+<p>The news they had waited for had come at last. It might be a false clew,
+but it was something to work on, and Tom was tired of inaction. Then,
+too, even after they had started, the prisoner might be moved and they
+would have to trace him again.</p>
+
+<p>&quot;But that is the latest information we could get,&quot; said Mr. Androwsky.
+&quot;It came through some of our Anarchist friends, and I believe is
+reliable. Can you soon make a thousand miles in your airship?&quot;</p>
+
+<p>&quot;Yes,&quot; answered Tom, &quot;if I push her to the limit.&quot;</p>
+
+<p>&quot;Then do so,&quot; advised the Nihilist, &quot;for there is need of haste. In
+making inquiries our friends might incur suspicions and Peter Petrofsky
+may be exiled to some other place.&quot;</p>
+
+<p>&quot;Oh, we'll get there,&quot; cried Tom. &quot;Ned, see to the gas machine. Mr.
+Damon, you can help me in the pilot house.&quot;</p>
+
+<p>&quot;Here is a map of the best route,&quot; said the Nihilist, as he handed one
+to Mr. Petrofsky. &quot;It will take you there the shortest way. But how can
+you steer when high in the air?&quot;</p>
+
+<p>&quot;By compass,&quot; explained Tom. &quot;We'll get there, never fear, and we're
+grateful for your clew.&quot;</p>
+
+<p>&quot;I never can thank you enough!&quot; exclaimed the exile, as he shook hands
+with Mr. Androwsky,</p>
+
+<p>The Nihilist left, after announcing that, in the event of the success of
+Tom and his friends, and the rescue of the exile from the sulphur mine,
+it would probably become known to them, as such news came through the
+Revolutionary channels, slowly but surely.</p>
+
+<p>&quot;Here we go!&quot; cried the young inventor gaily, as he turned the starting
+lever in the pilot house, and silently, in the darkness of the night,
+the Falcon shot upward. There was not a light on board, for, though
+small signal lamps had been kept burning when the craft was in the
+forest, to guide the Nihilists to her, now that she was up in the air,
+and in motion, it was feared that her presence would become known to the
+authorities of the town, so even these had been extinguished.</p>
+
+<p>&quot;After we get well away we can turn on the electrics,&quot; remarked Tom,
+&quot;and if they see us at a distance they may take us for a meteor. But, so
+close as this, they'd get wise in a minute.&quot;</p>
+
+<p>Mr. Damon, who had done all that Tom needed in the starting of the
+craft, went to the forward port rail, and idly looked down on the black
+forest they were leaving. He could just make out the clearing where they
+had rested for over a week, and he was startled to see lights bobbing in
+it.</p>
+
+<p>&quot;I say, Mr. Petrofsky!&quot; he called. &quot;Did we leave any of our lanterns
+behind us?&quot;</p>
+
+<p>&quot;I don't believe so,&quot; answered the exile. &quot;I'll ask Tom.&quot;</p>
+
+<p>&quot;Lanterns? No,&quot; answered the young inventor. &quot;Before we started I took
+down the only one we had out. I'll take a look.&quot;</p>
+
+<p>Setting the automatic steering apparatus, he joined Mr. Damon and the
+Russian. The lights were now dimly visible, moving about in the forest
+clearing.</p>
+
+<p>&quot;It's just as if they were looking for something,&quot; said Tom. &quot;Can it be
+that any of your Nihilist friends, Mr. Petrofsky are&mdash;&quot;</p>
+
+<p>&quot;Friends&mdash;no friends&mdash;enemies!&quot; cried the Russian. &quot;I understand now! We
+got away just in time. Those are police agents who are looking for us!
+They must have received word about our being there. Androwsky and the
+others never carry lights when they go about. They know the country too
+well, and then, too, it leads to detection. No, those are police spies.
+A few minutes later, and we would have been discovered.&quot;</p>
+
+<p>&quot;As it is we're right over their heads, and they don't know it,&quot;
+chuckled Tom. The airship was moving silently along before a good
+breeze, the propellers not having been started, and Tom let her drift
+for several miles, as he did not want to give the police spies a clew by
+the noise of the motor.</p>
+
+<p>The twinkling lights in the forest clearing disappeared from sight, and
+the seekers went on in the darkness.</p>
+
+<p>&quot;Well, we've got the hardest part of our work yet ahead of us,&quot; remarked
+Tom several hours later when, the lights having been set aglow, they
+were gathered in the main cabin. There was no danger of being seen now,
+for they were quite high.</p>
+
+<p>&quot;We've done pretty well, so far,&quot; commented Ned. &quot;I think we will have
+easier work rescuing Mr. Petrofsky's brother than in locating the mine.</p>
+
+<p>&quot;I don't know about that,&quot; answered the Russian. &quot;It is almost
+impossible to rescue a person from Siberia. Of course it is not going to
+be easy to locate the lost mine, but as for that we can keep on
+searching, that is if the air glider works, but there are so many forces
+to fight against in rescuing a prisoner.&quot;</p>
+
+<p>They had a long journey ahead of them, and not an easy route to follow,
+but as the days passed, and they came nearer and nearer to their goal,
+they became more and more eager.</p>
+
+<p>They were passing over a desolate country, for they avoided the vicinity
+of large towns and cities.</p>
+
+<p>&quot;I wonder when we'll strike Siberia?&quot; mused Tom one afternoon, as they
+sat on the outer deck, enjoying the air.</p>
+
+<p>&quot;At this rate of progress, very soon,&quot; answered the exile, after
+glancing at the map. &quot;We should be at the foot of the Ural mountains in
+a few hours, and across them in the night. Then we will be in Siberia.&quot;</p>
+
+<p>And he was right, for just as supper was being served, Ned, who had been
+making observations with a telescope, exclaimed:</p>
+
+<p>&quot;These must be the Urals!&quot;</p>
+
+<p>Mr. Petrofsky seized the glass.</p>
+
+<p>&quot;They are,&quot; he announced. &quot;We will cross between Orsk and Iroitsk. A
+safe place. In the morning we will be in Siberia&mdash;the land of the
+exiles.&quot;</p>
+
+<p>And they were, morning seeing them flying over a most desolate stretch
+of landscape. Onward they flew, covering verst after verst of
+loneliness.</p>
+
+<p>&quot;I'm going to put on a little more speed,&quot; announced Tom, after a visit
+to the storeroom, where were kept the reserve tanks of gasolene. &quot;I've
+got more fluid than I thought I had, and as we're on the ground now I
+want to hurry things. I'm going to make better time,&quot; and he yanked over
+the lever of the accelerator, sending the Falcon ahead at a rapid rate.</p>
+
+<p>All day this was kept up, and they were just making an observation to
+determine their position, along toward supper time, when there came the
+sound of another explosion from the motor room.</p>
+
+<p>&quot;Bless my safety valve!&quot; cried Mr. Damon. &quot;Something has gone wrong
+again.&quot;</p>
+
+<p>Tom ran to the motor, and, at the same time the Falcon which was being
+used as an aeroplane and not as a dirigible, began to sink.</p>
+
+<p>&quot;We're going down!&quot; cried Ned.</p>
+
+<p>&quot;Well, you know what to do!&quot; shouted his chum. &quot;The gas bag! Turn on the
+generator!&quot;</p>
+
+<p>Ned ran to it, but, in spite of his quick action, the craft continued to
+slide downward.</p>
+
+<p>&quot;She won't work !&quot; he cried.</p>
+
+<p>&quot;Then the intake pipe must be stopped!&quot; answered the young inventor.
+&quot;Never mind, I'll volplane to earth and we can make repairs. That
+magneto has gone out of business again.&quot;</p>
+
+<p>&quot;Don't land here!&quot; cried Ivan Petrofsky.</p>
+
+<p>&quot;Why not?&quot;</p>
+
+<p>&quot;Because we are approaching a large town&mdash;Owbinsk I think it is-the
+police there will be there to get us. Keep on to the forest again!&quot;</p>
+
+<p>&quot;I can't!&quot; cried Tom. &quot;We've got to go down, police or no police.&quot;</p>
+
+<p>Running to the pilot house, he guided the craft so that it would safely
+volplane to earth. They could all see that now they were approaching a
+fairly large town, and would probably land on its outskirts. Through the
+glass Ned could make out people staring up at the strange sight.</p>
+
+<p>&quot;They'll be ready to receive us,&quot; he announced grimly.</p>
+
+<p>&quot;I hope they have no dynamite bombs for us,&quot; murmured Mr. Damon. &quot;Bless
+my watch chain! I must get rid of that Nihilist literature I have about
+me, or they'll take me for one,&quot; and he tore up the tracts, and
+scattered them in the air.</p>
+
+<p>Meanwhile the Falcon continued to descend.</p>
+
+<p>&quot;Maybe I can make quick repairs, and get away before they realize who we
+are,&quot; said Tom, as he got ready for the landing.</p>
+
+<p>They came down in a big field, and, almost before the bicycle wheels had
+ceased revolving, under the application of the brakes, several men came
+running toward them.</p>
+
+<p>&quot;Here they come!&quot; cried Mr. Damon.</p>
+
+<p>&quot;They are only farmers,&quot; said the exile. He had donned his dark glasses
+again, and looked like anything but a Russian.</p>
+
+<p>&quot;Lively, Ned!&quot; cried Tom. &quot;Let's see if we can't make repairs and get
+off again.&quot;</p>
+
+<p>The two lads frantically began work, and they soon had the magneto in
+running order. They could have gone up as an aeroplane, leaving the
+repairs to the gas bag to be made later but, just as they were ready to
+start, there came galloping out a troop of Cossack soldiers. Their
+commander called something to them.</p>
+
+<p>&quot;What is he saying?&quot; cried Tom to Mr. Petrofsky.</p>
+
+<p>&quot;He is telling them to surround us so that we can not get a running
+start, such as we need to go up. Evidently he understands aeroplanes.&quot;</p>
+
+<p>&quot;Well, I'm going to have a try,&quot; declared the young inventor.</p>
+
+<p>He jumped to the pilot house, yelling to Ned to start the motor, but it
+was too late. They were hemmed in by a cordon of cavalry, and it would
+have been madness to have rushed the Falcon into them, for she would
+have been wrecked, even if Tom could have succeeded in sending her
+through the lines.</p>
+
+<p>&quot;I guess it's all up with us,&quot; groaned Ned.</p>
+
+<p>And it seemed to; for, a moment later, an officer and several aides
+galloped forward, calling out something in Russian.</p>
+
+<p>&quot;What is it?&quot; asked Tom.</p>
+
+<p>&quot;He says we are under arrest,&quot; translated the exile.</p>
+
+<p>&quot;What for?&quot; demanded the young inventor.</p>
+
+<p>Ivan Petrofsky shrugged his shoulders.</p>
+
+<p>&quot;It is of little use to ask&mdash;now,&quot; he answered. &quot;It may be we have
+violated some local law, and can pay a fine and go, or we may be taken
+for just what we are, or foreign spies, which we are not. It is best to
+keep quiet, and go with them.&quot;</p>
+
+<p>&quot;Go where?&quot; cried Tom.</p>
+
+<p>&quot;To prison, I suppose,&quot; answered the exile. &quot;Keep quiet, and leave it to
+me. I will do all I can. I don't believe they will recognize me.</p>
+
+<p>&quot;Bless my search warrant!&quot; cried Mr. Damon. &quot;In a Russian prison! That
+is terrible!&quot;</p>
+
+<p>A few minutes later, expostulations having been useless, our friends
+were led away between guards who carried ugly looking rifles, and who
+looked more ugly and menacing themselves. Then the doors of the Russian
+prison of Owbinsk closed on Tom and his friends, while their airship was
+left at the mercy of their enemies.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XIX" id="CHAPTER_XIX" />CHAPTER XIX</h2>
+
+<h3>LOST IN A SALT MINE</h3>
+
+
+<p>The blow had descended so suddenly that it was paralyzing. Tom and his
+friends did not know what to do, but they saw the wisdom of the course
+of leaving everything to Ivan Petrofsky. He was a Russian, and he knew
+the Russian police ways&mdash;to his sorrow.</p>
+
+<p>&quot;I'm not afraid,&quot; said Tom, when they had been locked in a large prison
+room, evidently set apart for the use of political, rather than
+criminal, offenders. &quot;We're United States citizens, and once our counsel
+hears of this&mdash;as he will&mdash;there'll be some merry doings in Oskwaski, or
+whatever they call this place. But I am worried about what they may do
+to the Falcon.&quot;</p>
+
+<p>&quot;Have no fears on that score,&quot; said the Russian exile. &quot;They know the
+value of a good airship, and they won't destroy her.&quot;</p>
+
+<p>&quot;What will they do then?&quot; asked Tom.</p>
+
+<p>&quot;Keep her for their own use, perhaps.&quot;</p>
+
+<p>&quot;Never!&quot; cried Tom. &quot;I'll destroy her first!&quot;</p>
+
+<p>&quot;If you get the chance!&quot; interposed the exile.</p>
+
+<p>&quot;But we're American citizens!&quot; cried Tom, &quot;and&mdash;&quot;</p>
+
+<p>&quot;You forget that I am not,&quot; interrupted Mr. Petrofsky. &quot;I can't claim
+the protection of your flag, and that is why I wish to remain unknown.
+We must act quietly. The more trouble we make, the more important they
+will know us to be. If we hope to accomplish anything we must act
+cautiously.&quot;</p>
+
+<p>&quot;But my airship!&quot; cried Tom.</p>
+
+<p>&quot;They won't do anything to that right away,&quot; declared the Russian in a
+whisper for he knew sometimes the police listened to the talk of
+prisoners. &quot;I think, from what I overheard when they arrested us, that
+we either trespassed on the grounds of some one in authority, who had us
+taken in out of spite, or they fear we may be English or French spies,
+seeking to find out Russian secrets.&quot;</p>
+
+<p>They were served with food in their prison, but to all inquiries made by
+Ivan Petrofsky, evasive answers were returned. He spoke in poor, broken
+Russian, so that he would not be taken for a native of that country. Had
+he been, he would have at once been in great danger of being accused as
+an escaped exile.</p>
+
+<p>Finally a man who, the exile whispered to his Companions, was the local
+governor, came to their prison. He eagerly asked questions as to their
+mission, and Mr. Petrofsky answered them diplomatically.</p>
+
+<p>&quot;I don't think he'll make much out of what I told him,&quot; said the exile
+when the governor had gone. &quot;I let him think we were scientists, or
+pleasure seekers, airshipping for our amusement. He tried to tangle me
+up politically, but I knew enough to keep out of such traps.&quot;</p>
+
+<p>&quot;What's going to become of us?&quot; asked Ned.</p>
+
+<p>&quot;We will be detained a few days&mdash;until they find out more about us.
+Their spies are busy, I have no doubt, and they are telegraphing all
+over Europe about us.&quot;</p>
+
+<p>&quot;What about my airship?&quot; asked Tom.</p>
+
+<p>&quot;I spoke of that,&quot; answered the exile. &quot;I said you were a well-known
+inventor of the United States, and that if any harm came to the craft
+the Russian Government would not only be held responsible, but that the
+governor himself would be liable, and I said that it cost much money.
+That touched him, for, in spite of their power, these Russians are
+miserably paid. He didn't want to have to make good, and if it developed
+that he had made a mistake in arresting us, his superiors would disclaim
+all responsibility, and let him shoulder the blame. Oh, all is not lost
+yet, though I don't like the looks of things.&quot;</p>
+
+<p>Indeed it began to seem rather black for our friends, for, that night
+they were taken from the fairly comfortable, large, prison room, and
+confined in small stone cells down in a basement. They were separated,
+but as the cells adjoined on a corridor they could talk to each other.
+With some coarse food, and a little water, Tom and his friends were left
+alone.</p>
+
+<p>&quot;Say I don't like this!&quot; cried our hero, after a pause.</p>
+
+<p>&quot;Me either,&quot; chimed in Ned.</p>
+
+<p>&quot;Bless my burglar alarm!&quot; exclaimed Mr. Damon. &quot;It's an awful disgrace!
+If my wife ever heard of me being in jail&mdash;&quot;</p>
+
+<p>&quot;She may never hear of it!&quot; interposed Tom.</p>
+
+<p>&quot;Bless my heart!&quot; cried the odd man. &quot;Don't say such things.&quot;</p>
+
+<p>They discussed their plight at length, but nothing could be done, and
+they settled themselves to uneasy slumber. For two days they were thus
+imprisoned, and all of Mr. Petrofsky's demands that they be given a fair
+trial, and allowed to know the nature of the charge against them, went
+for naught. No one came to see them but a villainous looking guard, who
+brought them their poor meals. The governor ignored them, and Mr.
+Petrofsky did not know what to think.</p>
+
+<p>&quot;Well, I'm getting sick of this!&quot; exclaimed Tom&mdash;I wish I knew where my
+airship was.&quot;</p>
+
+<p>&quot;I fancy it's in the same place,&quot; replied the exile. &quot;From the way the
+governor acted I think he'd be afraid to have it moved. It might be
+damaged. If I could only get word to some of my Revolutionary friends it
+might do some good, but I guess I can't. We'll just have to wait.&quot;</p>
+
+<p>Another day passed, and nothing happened. But that night, when the guard
+came to bring their suppers, something did occur.</p>
+
+<p>&quot;Hello! we've got a new one!&quot; exclaimed Tom, as he noted the man. &quot;Not
+so bad looking, either.&quot;</p>
+
+<p>The man peered into his cell, and said something in Russian.</p>
+
+<p>&quot;Nothing doing,&quot; remarked the young inventor with a short laugh. &quot;Nixy
+on that jabbering.&quot;</p>
+
+<p>But, no sooner had the man's words penetrated to the cell of Ivan
+Petrofsky, that the exile called out something. The guard started,
+hastened to that cell door, and for a few seconds there was an excited
+dialogue in Russian.</p>
+
+<p>&quot;Boys! Mr. Damon! We're saved!&quot; suddenly cried out Mr. Petrofsky.</p>
+
+<p>&quot;Bless my door knob! You don't say so!&quot; gasped the odd man. &quot;How? Has
+the Czar sent orders to release us.&quot;</p>
+
+<p>&quot;No, but somehow my Revolutionary friends have heard about my arrest,
+and they have arranged for our release&mdash;secretly of course. This guard
+is affiliated with the Nihilist group that got on the trail of my
+brother. He bribed the other guard to let him take his place for
+to-night, and now&mdash;&quot;</p>
+
+<p>&quot;Yes! What is it?&quot; cried Tom.</p>
+
+<p>&quot;He's going to open the cell doors and let us out!&quot;</p>
+
+<p>&quot;But how can we get past the other guards, upstairs?&quot; asked Ned.</p>
+
+<p>&quot;We're not going that way,&quot; explained Mr. Petrofsky. &quot;There is a secret
+exit from this corridor, through a tunnel that connects with a large
+salt mine. Once we are in there we can make our way out. We'll soon be
+free.&quot;</p>
+
+<p>&quot;Ask him if he's heard anything of my airship?&quot; asked Tom. Mr. Petrofsky
+put the question rapidly in Russian and then translated the answer.</p>
+
+<p>&quot;It's in the same place.&quot;</p>
+
+<p>&quot;Hurray!&quot; cried Tom.</p>
+
+<p>Working rapidly, the Nihilist guard soon had the cell doors open, for he
+had the keys, and our friends stepped out into the corridor.</p>
+
+<p>&quot;This way,&quot; called Ivan Petrofsky, as he followed their liberator, who
+spoke in whispers. &quot;He says he will lead us to the salt mine, tell us
+how to get out and then he must make his own escape.&quot;</p>
+
+<p>&quot;Then he isn't coming with us?&quot; asked Ned.</p>
+
+<p>&quot;No, it would not he safe. But he will tell us how to get out. It seems
+that years ago some prisoners escaped this way, and the authorities
+closed up the tunnel. But a cavein of the salt mine opened a way into it
+again.&quot;</p>
+
+<p>They followed their queer guide, who led them down the corridor. He
+paused at the end, and then, diving in behind a pile of rubbish, he
+pulled away some boards. A black opening, barely large enough for a man
+to walk in upright, was disclosed.</p>
+
+<p>&quot;In there?&quot; cried Tom.</p>
+
+<p>&quot;In there,&quot; answered Mr. Petrofsky. He and the guard murmured their
+good-byes, and then, with a lighted candle the faithful Nihilist had
+provided, and with several others in reserve, our friends stepped into
+the blackness. They could hear the board being pulled back into place
+behind them.</p>
+
+<p>&quot;Forward!&quot; cried the exile, and forward they went.</p>
+
+<p>It was not a pleasant journey, being through an uneven tunnel in the
+darkness. Half a mile later they emerged into a large salt mine, that
+seemed to be directly beneath the town. Work in this part had been
+abandoned long ago, all the salt there was left being in the shape of
+large pillars, that supported the roof. It sparkled dully in the candle
+light.</p>
+
+<p>&quot;Now let me see if I remember the turnings,&quot; murmured Mr. Petrofsky. &quot;He
+said to keep on for half an hour, and we would come out in a little
+woods not far from where our airship was anchored.&quot;</p>
+
+<p>Twisting and turning, here and there in the semi-darkness, stumbling,
+and sometimes falling over the uneven floor, the little party went on.</p>
+
+<p>&quot;Did you say half an hour?&quot; asked Tom, after a while.</p>
+
+<p>&quot;Yes,&quot; replied the Russian.</p>
+
+<p>&quot;We've been longer than that,&quot; announced the young inventor, after a
+look at his watch. &quot;It's over an hour.&quot;</p>
+
+<p>&quot;Bless my timetable!&quot; cried Mr. Damon.</p>
+
+<p>&quot;Are you sure?&quot; asked Mr. Petrofsky.</p>
+
+<p>&quot;Yes,&quot; answered Tom in a low voice.</p>
+
+<p>The Russian looked about him, flashing the candle on several turnings
+and tunnels. Suddenly Ned uttered a cry.</p>
+
+<p>&quot;Why, we passed this place a little while before!&quot; he said. &quot;I remember
+this pillar that looks like two men wrestling!&quot;</p>
+
+<p>It was true. They all remembered it when they saw it again.</p>
+
+<p>&quot;Back in the same place!&quot; mused the Russian. &quot;Then we have doubled on
+our tracks. I'm afraid we're lost!&quot;</p>
+
+<p>&quot;Lost in a Russian salt mine!&quot; gasped Tom, and his words sounded ominous
+in that gloomy place.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XX" id="CHAPTER_XX" />CHAPTER XX</h2>
+
+<h3>THE ESCAPE</h3>
+
+
+<p>For a space of several seconds no one moved or spoke. In the flickering
+light of the candle they looked at one another, and then at the
+fantastic pillars of salt all about them. Then Mr. Damon started
+forward.</p>
+
+<p>&quot;Bless my trolley car!&quot; he exclaimed. &quot;It isn't possible! There must be
+some mistake. If we'll keep on we'll come out all right. You know your
+way about, don't you, Mr. Petrofsky?&quot;</p>
+
+<p>&quot;I thought I did, from what the guard told us, but it seems I must have
+taken a wrong turning.&quot;</p>
+
+<p>&quot;Then it's easily remedied,&quot; suggested Tom &quot;All we'll have to do will be
+to go to the place where we started, and begin over again.&quot;</p>
+
+<p>&quot;Of course,&quot; agreed Ned, and they all seemed more cheerful.</p>
+
+<p>&quot;And if we start out once more, and get lost again, then what?&quot; asked
+Mr. Damon.</p>
+
+<p>&quot;Well, if worst comes to worst, we can go, back in the tunnel, go to our
+cells and ask the guard to come with us and show us the way went on Tom.</p>
+
+<p>&quot;Never!&quot; cried the exile. &quot;It would be the most dangerous thing in the
+world to go back to the prison. Our escape has probably been discovered
+by this time, and to return would only be to put our heads in the noose.
+We must keep on at any cost!&quot;</p>
+
+<p>&quot;But if we can't get out,&quot; suggested Tom, &quot;and if we haven't anything to
+eat or drink, we&mdash;&quot;</p>
+
+<p>He did not finish, but they all knew what he meant.</p>
+
+<p>&quot;Oh, we'll get out!&quot; declared Ned, who was something of an optimist.
+&quot;You've been in salt mines before, haven't you, Mr. Petrofsky?&quot;</p>
+
+<p>&quot;Yes, I was condemned to one once, but it was not in this part of the
+country, and it was not an abandoned one. I imagine this was only an
+isolated mine, and that there are no others near it, so when they
+abandoned it, after all the salt was taken out, most people forgot about
+it. I remember once a party of prisoners were lost in a large salt mine,
+and were missed for several days.&quot;</p>
+
+<p>&quot;What happened to them?&quot; asked Tom.</p>
+
+<p>&quot;I don't like to talk about it,&quot; replied the Russian with a shudder.</p>
+
+<p>&quot;Bless my soul! Was it as bad as that?&quot; asked Mr. Damon.</p>
+
+<p>&quot;It was,&quot; replied the exile. &quot;But now let's see if we can find our way
+back, and start afresh. I'll be more careful next time, and watch the
+turns more closely.&quot;</p>
+
+<p>But he did not get the chance. They could not find the tunnel whence
+they had started. Turn after turn they took, down passage after passage
+sometimes in such small ones that they almost had to crawl.</p>
+
+<p>But it was of no use. They could not find their way back to the starting
+place, and they could not find the opening of the mine. They had used
+two of the slow burning candles and they had only half a dozen or so
+left. When these were gone&mdash;</p>
+
+<p>But they did not like to think of that, and stumbled on and on. They did
+not talk much, for they were too worried. Finally Ned gasped:</p>
+
+<p>&quot;I'd give a good deal for a drink of water.&quot;</p>
+
+<p>&quot;So would I,&quot; added his chum. &quot;But what's the use of wishing? If there
+was a spring down here it would be salt water. But I know what I would
+do&mdash;if I could.&quot;</p>
+
+<p>&quot;What?&quot; asked Mr. Damon.</p>
+
+<p>&quot;Go back to the prison. At least we wouldn't starve there, and we'd have
+something to drink. If they kept us we know we could get
+free&mdash;sometime.&quot;</p>
+
+<p>&quot;Perhaps never!&quot; exclaimed Ivan Petrofsky. &quot;It is better to keep on
+here, and, as for me, I would rather die here than go back to a Russian
+prison. We must&mdash;we shall get out!&quot;</p>
+
+<p>But it was idle talk. Gradually they lost track of time as they
+staggered on, and they hardly knew whether a day had passed or whether
+it was but a few hours since they had been lost.</p>
+
+<p>Of their sufferings in that salt mine I shall not go into details. There
+are enough unpleasant things in this world without telling about that.
+They must have wandered around for at least a day and a half, and in all
+that while they had not a drop of water, and not a thing to eat. Wait,
+though, at last in their desperation they did gnaw the tallow candles,
+and that served to keep them alive, and, in a measure, alleviate their
+awful sufferings from thirst.</p>
+
+<p>Back and forth they wandered, up and down in the galleries of the old
+salt mine. They were merely hoping against hope.</p>
+
+<p>&quot;It's worse than the underground city of gold,&quot; said Ned in hollow
+tones, as he staggered on. &quot;Worse&mdash;much worse.&quot; His head was feeling
+light. No one answered him.</p>
+
+<p>It was, as they learned later, just about two days after the time when
+they entered the mine that they managed to get out. Forty-eight hours,
+most of them of intense suffering. They were burning their last candle,
+and when that was out they knew they would have the horrors of darkness
+to fight against, as well as those of hunger and thirst.</p>
+
+<p>But fate was kind to them. How they managed to hit on the right gallery
+they did not know, but, as they made a turn around an immense pillar of
+salt Tom, who was walking weakly in advance, suddenly stopped.</p>
+
+<p>&quot;Look! Look!&quot; he whispered. &quot;Another candle! Someone&mdash;someone is
+searching for us! We are saved!&quot;</p>
+
+<p>&quot;It may be the police!&quot; said Ned.</p>
+
+<p>&quot;That is not a candle,&quot; spoke the Russian in hollow tones as he looked
+to where Tom pointed, to a little glimmer of light. &quot;It is a star.
+Friends, we are saved, and by Providence! That is a star, shining
+through the opening of the mine. We are saved!&quot;</p>
+
+<p>Eagerly they pressed forward, and they had not gone far before they knew
+that the exile was right. They felt the cool night wind on their hot
+cheeks.</p>
+
+<p>&quot;Thank heaven!&quot; gasped Tom, as he pushed on.</p>
+
+<p>A moment later, climbing over the rusted rails on which the mine cars
+had run with their loads of salt, they staggered into the open. They
+were free&mdash;under the silent stars!</p>
+
+<p>&quot;And now, if we can only find the airship,&quot; said Tom faintly, &quot;we can&mdash;&quot;</p>
+
+<p>&quot;Look there!&quot; whispered Ned, pointing to a patch of deeper blackness
+that the surrounding night. &quot;What's that.&quot;</p>
+
+<p>&quot;The Falcon!&quot; gasped Tom. He started toward her, for she was but a short
+distance from a little clump of trees into which they had emerged from
+the opening of the salt mine. There, on the same little plane where they
+had landed in her was the airship. She had not been moved.</p>
+
+<p>&quot;Wait!&quot; cautioned Ivan Petrofsky. &quot;She may be guarded.&quot;</p>
+
+<p>Hardly had he spoken than there walked into the faint starlight on the
+side of the ship nearest them, a Cossack soldier with his rifle over his
+shoulder.</p>
+
+<p>&quot;We can't get her!&quot; gasped Ned.</p>
+
+<p>&quot;We've got to get her!&quot; declared Tom. &quot;We'll die if we don't!&quot;</p>
+
+<p>&quot;But the guards! They'll arrest us!&quot; said the exile.</p>
+
+<p>An instant later a second soldier joined the first, and they could be
+seen conversing. They then resumed their pacing around the anchored
+craft. Evidently they were waiting for the escaped prisoners to come up
+when they would give the alarm and apprehend them.</p>
+
+<p>&quot;What can we do?&quot; asked Mr. Damon.</p>
+
+<p>&quot;I have a plan,&quot; said Tom weakly. &quot;It's the only chance, for we're not
+strong enough to tackle them. Every time they go around on the far side
+of the airship we must creep forward. When they come on this side we'll
+lie down. I doubt if they can see us. Once we are on hoard we can cut
+the ropes, and start off. Everything is all ready for a start if they
+haven't monkeyed with her, and I don't think they have. We've got room
+enough to run along as an aeroplane and mount upward. It's our only
+hope.&quot;</p>
+
+<p>The others agreed, and they put the plan into operation. When the
+Cossack guards were out of sight the escaped prisoners crawled forward,
+and when the soldiers came into view our friends waited in silence.</p>
+
+<p>It took several minutes of alternate creeping and waiting to do this,
+but it was accomplished at last and unseen they managed to slip aboard
+Then it was the work of but a moment to cut the restraining ropes.</p>
+
+<p>Silently Tom crept to the motor room. He had to work in absolute
+darkness, for the gleam of a light would have drawn the fire of the
+guards. But the youth knew every inch of his invention. The only
+worriment was whether or not the motor would start up after the
+breakdown, not having been run since it was so hastily repaired. Still
+he could only try.</p>
+
+<p>He looked out, and saw the guards pacing back and forth. They did not
+know that the much-sought prisoners were within a few feet of them.</p>
+
+<p>Ned was in the pilot house. He could see a clear field in front of him.</p>
+
+<p>Suddenly Tom pulled the starting lever. There was a little clicking,
+followed by silence. Was the motor going to revolve? It answered the
+next moment with a whizz and a roar.</p>
+
+<p>&quot;Here we go!&quot; cried the young inventor, as the big machine shot forward
+on her flight. &quot;Now let them stop us!&quot;</p>
+
+<p>Forward she went until Ned, knowing by the speed that she had momentum
+enough, tilted the elevation rudder, and up she shot, while behind, on
+the ground, wildly running to and fro, and firing their rifles, were the
+two amazed guards.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XXI" id="CHAPTER_XXI" />CHAPTER XXI</h2>
+
+<h3>THE RESCUE</h3>
+
+
+<p>&quot;Have we&mdash;have we time to get a drink?&quot; gasped Ned, when the aeroplane,
+now on a level keel, had been shooting forward about three minutes.
+Already it was beyond the reach of the rifles.</p>
+
+<p>&quot;Yes, but take only a little,&quot; cautioned Tom. &quot;Oh! it doesn't seem
+possible that we are free!&quot;</p>
+
+<p>He switched on a few interior lights, and by their glow the faint and
+starving platinum-seekers found water and food. Their craft had,
+apparently, not been touched in their absence, and the machinery ran
+well.</p>
+
+<p>Cautiously they ate and drank, feeling their strength come back to them,
+and then they removed the traces of their terrible imprisonment, and set
+about in ease and comfort, talking of what they had suffered.</p>
+
+<p>Onward sped the aeroplane, onward through the night, and then Tom,
+having set the automatic steering gear, all fell into heavy slumbers
+that lasted until far into the next day.</p>
+
+<p>When the young inventor awoke he looked below and could see
+nothing&mdash;nothing but a sea of mist.</p>
+
+<p>&quot;What's this?&quot; he cried. &quot;Are we above the clouds, or in a fog over some
+inland sea?&quot;</p>
+
+<p>He was quite worried, until Ivan Petrofsky informed him that they were
+in the midst of a dense fog, which was common over that part of Siberia,</p>
+
+<p>&quot;But where are we?&quot; asked Ned.</p>
+
+<p>&quot;About over the province of Irtutsk,&quot; was the answer. &quot;We are heading
+north,&quot; he went on, as he looked at the compass, &quot;and I think about
+right to land somewhere near where my brother is confined in the sulphur
+mine.&quot;</p>
+
+<p>&quot;That's so; we've got to drop,&quot; said Tom. &quot;I must get the gas pipe
+repaired. I wish we could see over what soft of a place we were so as to
+know whether it would be safe to land. I wish the mist would clear
+away.&quot;</p>
+
+<p>It did, about noon, and they noted that they were over a desolate
+stretch of country, in which it would be safe to make a landing.</p>
+
+<p>Bringing the aeroplane down on as smooth a spot as he could pick out,
+Tom and Ned were soon at work clearing out the clogged pipe of the gas
+generator. They had to take it out in the open air, as the fumes were
+unpleasant, and it was while working over it that they saw a shadow
+thrown on the ground in front of them. Startled they looked up, to see a
+burly Russian staring at them.</p>
+
+<p>The sudden appearance of a man in that lonely spot, his calm regard of
+the lads, his stealthy approach, which had made it possible for him to
+be almost upon them before they were aware of his presence, all this
+made them suspicious of danger. Tom gave a quick glance about, however,
+and saw no others&mdash;no Cossack soldiers, and as he looked a second time
+at the man he noted that he was poorly dressed, that his shoes were
+ragged, his whole appearance denoting that he had traveled far, and was
+weary and ill.</p>
+
+<p>&quot;What do you make of this, Ned?&quot; asked Tom, in a low voice.</p>
+
+<p>&quot;I don't know what to make of it. He can't be an officer, in that rig,
+and he has no one with him. I guess we haven't anything to be afraid of.
+I'm going to ask him what he wants.&quot;</p>
+
+<p>Which Tom did in his plainest English. At once the man broke into a
+stream of confused Russian, and he kept it up until Tom held up his hand
+for silence.</p>
+
+<p>&quot;I'm sorry, but I can't understand you,&quot; said the young inventor. &quot;I'll
+call some one who can, though,&quot; and, raising his voice, he summoned Ivan
+Petrofsky who, with Mr. Damon, was inside the airship doing some small
+repairs.</p>
+
+<p>&quot;There's a Russian out here, Mr. Petrofsky,&quot; said Tom, &quot;and what he
+wants I can't make out.&quot;</p>
+
+<p>The exile was quickly on the scene and, after a first glance at the man,
+hurried up to him, grasped him by the hand and at once the two were
+talking such a torrent of hard-sounding words that Tom and Ned looked at
+each other helplessly, while Mr. Damon, who had come out, exclaimed:</p>
+
+<p>&quot;Bless my dictionary! they must know each other.&quot;</p>
+
+<p>For several minutes the two Russians kept up their rapid-fire talk and
+then Mr. Petrofsky, evidently realizing that his friends must wonder at
+it, turned to them and said:</p>
+
+<p>&quot;This is a very strange thing. This man is an escaped convict, as I once
+was. I recognized him by certain signs as soon as I saw him, though I
+had never met him before. There are certain marks by which a Siberian
+exile can never be forgotten,&quot; he added significantly. &quot;He made his
+escape from the mines some time ago, and has suffered great hardships
+since. The revolutionists help him when they can, but he has to keep in
+concealment and travels from town to town as best he may. He has heard
+of our airship, I suppose from inquiries the revolutionists have been
+making in our behalf, and when he unexpectedly came upon us just now he
+was not frightened, as an ordinary peasant would have been. But he did
+not know I was aboard.&quot;</p>
+
+<p>&quot;And does he know you?&quot; asked Tom. &quot;Does he know you are trying to
+rescue your brother?&quot;</p>
+
+<p>&quot;No, but I will tell him.&quot;</p>
+
+<p>There was another exchange of the Russian language, and it seemed to
+have a surprising result. For, no sooner had Ivan Petrofsky mentioned
+his brother, than the other, whose name was Alexis Borious seemed
+greatly excited. Mr. Petrofsky was equally so at the reply his new
+acquaintance made, and fairly shouted to Tom, Ned and Mr. Damon.</p>
+
+<p>&quot;Friends, I have unexpected good news! It is well that we met this man
+or we would have gone many miles out of our way. My brother has been
+moved to another mine since the revolutionists located him for me. He is
+in a lonely district many miles from here. This man was in the same mine
+with him, until my brother was transferred, and then Mr. Borious
+escaped. We will have to change our plans.&quot;</p>
+
+<p>&quot;And where are we to head for now?&quot; asked Tom.</p>
+
+<p>&quot;Near to the town of Haskaski, where my poor brother is working in a
+sulphur mine!&quot;</p>
+
+<p>&quot;Then let's get a move on!&quot; cried Tom with enthusiasm. &quot;Do you think
+this man will come with us, Mr. Petrofsky, to help in the rescue, and
+show us the place?&quot;</p>
+
+<p>&quot;He says he will,&quot; translated the exile, &quot;though he is much afraid of
+our strange craft. Still he knows that to trust himself to it is better
+than being captured, and sent back to the mines to starve to death!&quot;</p>
+
+<p>&quot;Good!&quot; cried Tom. &quot;And if he wants to, and all goes well, we'll take
+him out of Russia with us. Now get busy, Ned, and we'll have this
+machine in shape again soon.&quot;</p>
+
+<p>While Ivan Petrofsky took his new friend inside, and explained to him
+about the workings of the Falcon, Tom and Ned labored over the gas
+machine with such good effect that by night it was capable of being
+used. Then they went aloft, and making a change in their route, as
+suggested by Mr. Borious, they headed for the desolate sulphur region.</p>
+
+<p>For several days they sailed on, and gradually a plan of rescue was
+worked out. According to the information of the newcomer, the best way
+to save Mr. Petrofsky's brother was to make the attempt when the
+prisoners were marched back from the mines to the barracks where they
+were confined.</p>
+
+<p>&quot;It will be dark then,&quot; said Mr. Borious, &quot;and if you can hover in your
+airship near at hand, and if Mr. Petrofsky can call out to his brother
+to run to him, we can take him up with us and get away before the guards
+know what we are doing.&quot;</p>
+
+<p>&quot;But aren't the prisoners chained?&quot; asked Tom.</p>
+
+<p>&quot;No, they depend on guards to prevent escapes.&quot;</p>
+
+<p>&quot;Then we'll try that way,&quot; decided the young inventor.</p>
+
+<p>On and on they sailed, the Falcon working admirably. Verst after verst
+was covered, and finally, one morning, Mr. Borious, who knew the country
+well, from having once been a prisoner there, said:</p>
+
+<p>&quot;We are now near the place. If we go any closer we may be observed. We
+had better remain hidden in some grove of trees so that at nightfall we
+can go forth to the rescue.&quot;</p>
+
+<p>&quot;But how can we find it after dark?&quot; asked Ned.</p>
+
+<p>&quot;You can easily tell by the lights in the barracks,&quot; was the answer. &quot;I
+can stand in the pilot house to direct you, for nearly all these exile
+prisons are alike. The prisoners will march in a long line from the
+mine. Then for the rescue.&quot;</p>
+
+<p>It was tedious waiting that day, but it had to be done, and to Tom, who
+was anxious to effect the rescue, and proceed to the place of the winds
+to try his air glider, it seemed as if dusk would never come as they
+remained in concealment.</p>
+
+<p>But night finally approached and then the great airship went silently
+aloft, ready to hover over the prison ground. Fortunately there was
+little wind; and she could be used as a balloon, thus avoiding the noise
+of the motor.</p>
+
+<p>&quot;The next thing I do, when I get home,&quot; remarked Tom, as they drifted
+along. &quot;Will be to make a silent airship. I think they would be very
+useful.&quot;</p>
+
+<p>With Mr. Borious in the pilot house, to point out the way, Tom steered
+through the fast-gathering darkness. The Russian had soon become used to
+the airship, and was not at all afraid.</p>
+
+<p>&quot;Can you go just where you want to, as a balloon?&quot; asked the new guide.</p>
+
+<p>&quot;No, but almost,&quot; replied Tom. &quot;At the last moment I've got to take a
+chance and start the motor to send us just where we want to go. That's
+why I think a silent airship would be a great thing. You could get up on
+the enemy before he knew it.&quot;</p>
+
+<p>&quot;There are the prison barracks,&quot; said the guide a little later, his talk
+being translated by Mr. Petrofsky. Below and a little ahead of them
+could been seen a cluster of lights.</p>
+
+<p>&quot;Yes, that looks like a line of prisoners,&quot; remarked Ned, who was
+peering through a pair of night glasses.</p>
+
+<p>&quot;Where?&quot; asked Tom eagerly, and they were pointed out to him. He took an
+observation, and exclaimed:</p>
+
+<p>&quot;There they are, sure enough. Now if your brother is only among them,
+Mr. Petrofsky, we'll soon have him on board.&quot;</p>
+
+<p>&quot;Heaven grant that he may be there!&quot; said the exile in a low voice.</p>
+
+<p>A moment later, the Falcon, meanwhile having been allowed to drift as
+close as possible to the dimly-seen line of prisoners, Tom set in motion
+the great motor, the propeller blades heating the air fiercely.</p>
+
+<p>At the sound there was a shout on the ground below, but before the
+excitement had time to spread, or before any of the guards could form a
+notion of what was about to take place, Tom had sent his craft to earth
+on a sharp slant, closer to the line of prisoners than he had dared to
+hope.</p>
+
+<p>Mr. Petrofsky sprang out on deck, and in a loud voice called in Russian:</p>
+
+<p>&quot;Peter! Peter! If you are there, come here! Come quickly! It is I, your
+brother Ivan who speaks. I have come to save you&mdash;save you in the
+wonderful airship of Tom Swift! Come quickly and we will take you away!
+Peter Petrofsky!&quot;</p>
+
+<p>For a moment there was silence, and then the sound of some one running
+rapidly was borne to the ears of the waiting ones. It was followed, a
+moment later, by angry shouts from the guards.</p>
+
+<p>&quot;Quick! Quick, Peter!&quot; cried the brother, &quot;over this way!&quot;</p>
+
+<p>For an instant only the exile showed a single electric flash light, that
+his brother might see in which direction to run. The echo of the
+approaching footsteps came nearer, the shouts of the guards redoubled,
+and then came the sound of many men running in pursuit.</p>
+
+<p>&quot;Hurry, Peter, hurry!&quot; cried Mr. Petrofsky, and, as he spoke in Russian
+the guards, of course, understood.</p>
+
+<p>Suddenly a rifle shot rang out, but the weapon seemed to have been fired
+in the air. A moment later a dark figure clambered aboard the airship.</p>
+
+<p>&quot;Peter, is it you?&quot; cried Ivan Petrofsky, hoarsely.</p>
+
+<p>&quot;Yes, brother! But get away quickly or the whole guard will be swarming
+about here!&quot;</p>
+
+<p>&quot;Praise the dear Lord you are saved!&quot;</p>
+
+<p>&quot;Is it all right?&quot; cried Tom, who wanted to make sure they were saving
+the right man.</p>
+
+<p>&quot;Yes! Yes, Tom! Go quickly!&quot; called Ivan Petrofsky, as he folded his
+brother in his arms. A moment later, with a roar, the Falcon shot away
+from the earth, while below sounded angry cries, confused shouts and
+many orders, for the guards and their officers had never known of such a
+daring rescue as this.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XXII" id="CHAPTER_XXII" />CHAPTER XXII</h2>
+
+<h3>IN THE HURRICANE</h3>
+
+
+<p>There was a volley of shots from the prison guards, and the flashes of
+the rifles cut bright slivers of flame in the darkness, but, so rapidly
+did the airship go up, veering off on a wide slant, under the skillful
+guidance of Tom that the shots did no harm.</p>
+
+<p>&quot;Bless my bullet pouch!&quot; cried Mr. Damon. &quot;They must be quite excited.&quot;</p>
+
+<p>&quot;Shouldn't wonder,&quot; calmly observed Ned, as he went to help his chum in
+managing the airship. &quot;But it won't do them any good. We've got our
+man.&quot;</p>
+
+<p>&quot;And right from under their noses, too,&quot; added Ivan Petrofsky
+exultingly. &quot;This rescue of an exile will go down in the history of
+Russia.&quot;</p>
+
+<p>The two exile brothers were gazing fondly at each other, for now that
+the Falcon was so high, Tom ventured to turn on the lights.</p>
+
+<p>A moment later the three Russians were excitedly conversing, while Tom
+and Ned managed the craft, and Mr. Damon, after listening a moment to
+the rapid flow of the strange language, which quite fascinated him,
+hurried to the galley to prepare a meal for the rescued one, who had
+been taken away before he had had a chance to get his supper.</p>
+
+<p>His wonder at his startling and unexpected rescue man well be imagined,
+but the joy at being reunited to his brother overshadowed everything for
+the time being. But when he had a chance to look about, and see what a
+strange craft he was in, his amazement knew no bounds, and he was like a
+child. He asked countless questions, and Ivan Petrofsky and Mr. Borious
+took turns in answering them. And from now on, I shall give the
+conversation of the two new Russians just as if they spoke English,
+though of course it had to be translated by Ivan Petrofsky, Peter's
+brother.</p>
+
+<p>If Peter was amazed at being rescued in an airship, his wonder grew when
+he was served with a well-cooked meal, while high in the air, and while
+flying along at the rate of fifty miles an hour. He could not talk
+enough about it.</p>
+
+<p>By degrees the story of how Tom and his friends had started for Russia
+was told, and there was added the detail of how Mr. Borious came to be
+picked up.</p>
+
+<p>&quot;But brother Ivan, you did not come all that distance to rescue me; did
+you?&quot; asked Peter.</p>
+
+<p>&quot;Yes, partly, and partly to find the platinum mine.&quot;</p>
+
+<p>&quot;What? The lost mine that you and I stumbled upon in that terrible
+storm?&quot;</p>
+
+<p>&quot;That is the one, Peter.&quot;</p>
+
+<p>&quot;Then, Tom Swift may as well return. I doubt if we can even locate the
+district where it was, and if we did find it, the winds blow so that
+even this magnificent ship could not weather the gales.&quot;</p>
+
+<p>&quot;I guess he doesn't understand about my air glider,&quot; said Tom with a
+smile, when this was translated to him. &quot;I wish I had a chance to put it
+together, and show him how it works.&quot;</p>
+
+<p>&quot;Oh, it will work all right,&quot; replied Ned, who was very proud of his
+friend's inventive ability.</p>
+
+<p>&quot;Now, what is the next thing to be done?&quot; asked Tom, a little later that
+evening, when, supper having been served, they were sitting in the main
+cabin, talking over the events of the past few days. &quot;I'd like to get on
+the track of that platinum treasure.&quot;</p>
+
+<p>&quot;And we will do all in our power to aid you,&quot; said Ivan Petrofsky. &quot;My
+brother and I owe much to you&mdash;in fact Peter owes you his life; do you
+not?&quot; and he turned to him.</p>
+
+<p>&quot;I do,&quot; was the firm answer.</p>
+
+<p>&quot;Oh, nonsense!&quot; exclaimed Tom, who did not like to be praised. &quot;I didn't
+do much.&quot;</p>
+
+<p>&quot;Much! You do not call taking me away from that place&mdash;that sulphur
+mine&mdash;that horrible prison barrack with the cruel guards&mdash;you do not
+call that much? My, friend,&quot; spoke the Russian solemnly, &quot;no one on
+earth has done so much for me as you have, and if it is the power of man
+to show you where that lost mine is, my brother and I will do so!&quot;</p>
+
+<p>&quot;Agreed,&quot; spoke Ivan quietly.</p>
+
+<p>&quot;Then what plans shall we make?&quot; asked Tom, after a little more talk.
+&quot;Are we to go about indiscriminately, or is there any possible way of
+getting on the trail?&quot;</p>
+
+<p>&quot;My brother and I will try and decide on a definite route,&quot; spoke Ivan
+Petrofsky. &quot;It is some time since I have seen him, and longer since we
+accidently found the mine together, but we will consult each other, and,
+if possible make some sort of a map.&quot;</p>
+
+<p>This was done the next day, the present maps aboard the Falcon being
+consulted, and the brothers comparing notes. They began to lay out a
+stretch of country in which it was most likely the lost mine lay. It
+took several days to do this, for sometimes one brother would forget
+some point, and again the other would. But at last they agreed on
+certain facts.</p>
+
+<p>&quot;This is the nearest we can come to it,&quot; said Ivan Petrofsky to Tom.
+&quot;The lost platinum mine lies somewhere between the city of Iakutsk and
+the first range of the Iablonnoi mountains. Those are the northern and
+southern boundaries. As for the western one, it is most likely the Lena
+river, and the eastern one the Amaga river. So you see you have quite a
+large stretch of country to search, Tom Swift.&quot;</p>
+
+<p>&quot;Yes, I should say I had,&quot; agreed the young inventor. But I have had
+harder tasks. Now that I know where to head for I'll get there as soon
+as possible.&quot;</p>
+
+<p>&quot;And what will you do when you arrive?&quot; asked Ned.</p>
+
+<p>&quot;Fly about in the Falcon, in ever-widening circles, starting as near the
+centre of that area as possible,&quot; replied Tom. &quot;And as soon as I run
+into a steady hurricane I'll know that I'm at the place of the big
+winds, and I'll get out my glider, for I'll be pretty sure to be near
+the place.&quot;</p>
+
+<p>&quot;Bless my gas meter!&quot; cried Mr. Damon. &quot;That's the talk!&quot;</p>
+
+<p>Tom put his plan into operation at once, by heading the nose of his
+craft for the desolate region mapped out by the Russian brothers.</p>
+
+<p>The days that followed were filled with weary searching. It was like the
+time when they had sought for the plain of the great ruined Temple in
+Mexico, that they might locate the underground city of gold. Only in
+this case they had no such landmark as a great Aztec ruin to guide them.</p>
+
+<p>What they were seeking for was something unseen, but which could be
+felt&mdash;a mysterious wind&mdash;a wind that might be encountered any time, and
+which might send the Falcon to the earth a wreck.</p>
+
+<p>The Russian brothers, staggering about in the storm, had seen the mine
+under different conditions from what it would be viewed now. Then it was
+winter in Siberia. Now it was summer, though it was not very warm.</p>
+
+<p>On and on sailed the Falcon. The weather could not have been better, but
+for once Tom wanted bad weather. He wanted a blow&mdash;the harder the
+better&mdash;and all eyes anxiously watched the anemometer, or wind gage. But
+ever it revolved lazily about in the gentle breeze.</p>
+
+<p>&quot;Oh, for a hurricane!&quot; cried Tom.</p>
+
+<p>He got his wish sooner than he anticipated. It was about two days after
+this, when they were going about in a great circle, about two hundred
+miles from the imaginary centre of the district in which the mine lay,
+that, as Mr. Damon was getting dinner a dish he was carrying to the
+table was suddenly whisked out of his hand.</p>
+
+<p>&quot;I say, what's the matter?&quot; he cried. &quot;Bless my&mdash;&quot;</p>
+
+<p>But he had no time to say more. The airship fairly stood on end, and
+then, turning completely about, was rapidly driven in the opposite
+direction, though her propellers were working rapidly.</p>
+
+<p>&quot;What's up?&quot; yelled Ned.</p>
+
+<p>&quot;We are capsizing!&quot; shouted Ivan Petrofsky, and indeed it seemed so, for
+the airship was being forced over.</p>
+
+<p>&quot;I guess we've struck what we want!&quot; cried Tom. &quot;We're in a hurricane
+all right! This is the place of the big wind! Now for my air glider, if
+I can get the airship to earth without being wrecked! Ned, lend a hand!
+We've got our work cut out for us now!&quot;</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XXIII" id="CHAPTER_XXIII" />CHAPTER XXIII</h2>
+
+<h3>THE LOST MINE</h3>
+
+
+<p>For several moments it seemed as if disaster would overtake the little
+band of platinum-hunters. In spite of all that Tom and Ned could do, the
+Falcon was whipped about like a feather in the wind. Sometimes she was
+pointing her nose to the clouds, and again earthward. Again she would be
+whirling about in the grip of the hurricane, like some fantastic dancer,
+and again she would roll dangerously. Had she turned turtle it probably
+would have been the last of her and of all on board.</p>
+
+<p>&quot;Yank that deflecting lever as far down as it will go!&quot; yelled Tom to
+his chum.</p>
+
+<p>&quot;I am. She won't go any farther.&quot;</p>
+
+<p>&quot;All right, hold her so. Mr. Damon, let all the gas out of the bag. I
+want to be as heavy as possible, and get to earth as soon as we can.&quot;</p>
+
+<p>&quot;Bless my comb and brush!&quot; cried the odd man. &quot;I don't know what's going
+to become of us.&quot;</p>
+
+<p>&quot;You will know, pretty soon, if the gas isn't let out!&quot; retorted Tom
+grimly, and then Mr. Damon hastened to the generator compartment, and
+opened the emergency outlet.</p>
+
+<p>Finally, by crowding on all the possible power, so that the propellers
+and deflecting rudders forced the craft down, Tom was able to get out of
+the grip of the hurricane, and landed just beyond the zone of it on the
+ground.</p>
+
+<p>&quot;Whew! That was a narrow squeak!&quot; cried Ned, as he got out. &quot;How'd you
+do it, Tom?&quot;</p>
+
+<p>&quot;I hardly know myself. But it's evident that we're on the right spot
+now.&quot;</p>
+
+<p>&quot;But the wind has stopped blowing,&quot; said Mr. Damon. &quot;It was only a
+gust.&quot;</p>
+
+<p>&quot;It was the worst kind of a gust I ever want to see,&quot; declared the young
+inventor. &quot;My air glider ought to work to perfection in that. If you
+think the wind has died out, Mr. Damon, just walk in that direction,&quot;
+and Tom pointed off to the left.</p>
+
+<p>&quot;Bless my umbrella, I will,&quot; was the reply and the odd man started off.
+He had not gone far, before he was seen to put his hand to his cap.
+Still he kept on.</p>
+
+<p>&quot;He's getting into the blow-zone,&quot; said Tom in a low voice.</p>
+
+<p>The next moment Mr. Damon was seen to stagger and fall, while his cap
+was whisked from his head, and sent high into the air, almost instantly
+disappearing from sight.</p>
+
+<p>&quot;Some wind that,&quot; murmured Ned, in rather awe-struck tones.</p>
+
+<p>&quot;That's so,&quot; agreed his chum. &quot;But we'd better help Mr. Damon,&quot; for that
+gentleman was slowly crawling back, not caring to trust himself on his
+feet, for the wind had actually carried him down by its force.</p>
+
+<p>&quot;Bless my anemometer!&quot; he gasped, when Tom and Ned had given him a hand
+up. &quot;What happened?&quot;</p>
+
+<p>&quot;It was the great wind,&quot; explained Tom. &quot;It blows only in a certain
+zone, like a draft down a chimney. It is like a cyclone, only that goes
+in a circle. This is a straight wind, but the path of it seems to be as
+sharply marked as a trail through the forest. I guess we're here all
+right. Does this location look familiar to you?&quot; he asked of the Russian
+brothers.</p>
+
+<p>&quot;I can't say that it does,&quot; answered Ivan. &quot;But then it was winter when
+we were here.&quot;</p>
+
+<p>&quot;And, another thing,&quot; put in Peter. &quot;That wind zone is quite wide. The
+mine may be in the middle, or near the other edge.&quot;</p>
+
+<p>&quot;That's so,&quot; agreed Tom. &quot;We'll soon see what we can do. Come on, Ned,
+let's get the air glider out and put her together. She'll have a test as
+is a test, now.&quot;</p>
+
+<p>I shall not describe the tedious work of re-assembling Tom Swift's
+latest invention in the air craft line&mdash;his glider. Sufficient to say
+that it was taken out from where it had been stored in separate pieces
+on board the Falcon, and put together on the plain that marked the
+beginning of the wind zone.</p>
+
+<p>It was a curious fact that twenty feet away from the path of the wind
+scarcely a breeze could be felt, while to advance a little way into it
+meant that one would at once be almost carried off his feet.</p>
+
+<p>Tom tested the speed of it one day with a special anemometer, and found
+that only a few hundred feet inside the zone the wind blew nearly one
+hundred miles an hour.</p>
+
+<p>&quot;What is it like inside, I wonder?&quot; asked Ned.</p>
+
+<p>&quot;It must be terrific,&quot; was his chum's opinion.</p>
+
+<p>&quot;Dare you risk it, Tom?&quot;</p>
+
+<p>&quot;Of course. The harder it blows the better the glider works. In fact I
+can't make much speed in a hundred-mile wind for with us all on board
+the craft will be heavy, and you must remember that I depend on the wind
+alone to give me motion.&quot;</p>
+
+<p>&quot;What do you think causes the wind to blow so peculiarly here Tom?&quot; went
+on Ned.</p>
+
+<p>&quot;Oh, it must be caused by high mountain ranges on either side, or the
+effects of heat and cold, the air being evaporated over a certain area
+because of great heat, say a volcano, or something like that; though I
+don't know that they have volcanoes here. That creates a vacuum, and
+other air rushes in to fill the vacant space. That's all wind is,
+anyhow, air rushing in to fill a vacuum, or low pressure zone, for you
+remember that nature abhors a vacuum.&quot;</p>
+
+<p>It took nearly a week to assemble the Vulture, as Tom had named his
+latest craft, from the fact that it could hover in the air motionless,
+like that great bird. At last it was completed and then, weights being
+taken aboard to steady it, all was ready for the test. Tom would have
+liked to have taken all his passengers in the glider, for it would work
+better then, but the three Russians were timid, though they promised to
+get aboard after the trial.</p>
+
+<p>The test came off early one morning, Tom, Ned and Mr. Damon being the
+only ones aboard. Bags of sand represented the others. The glider was
+wheeled to the edge of the wind zone and they took their places in the
+car. It was hard work for the gale, that had never ceased blowing for
+an instant since they found its zone, was very strong. But the glider
+remained motionless in it, for the wing planes, the rudders, and
+equalizing weights had been adjusted to make the strain of the wind
+neutral.</p>
+
+<p>&quot;All ready?&quot; asked Tom, when his chum and his friend were in the
+enclosed car of the glider.</p>
+
+<p>&quot;As ready as I ever shall be,&quot; answered Ned.</p>
+
+<p>&quot;Bless my suspenders! Let her go, Tom, and have it over with!&quot; cried the
+odd man.</p>
+
+<p>The young inventor pulled a lever, and almost instantly the glider
+darted forward. A moment later it soared aloft, and the three Russians
+cheered. But their voices were lost in the roar of the hurricane, as Tom
+sent his craft higher and higher.</p>
+
+<p>It worked perfectly, and he could direct it almost anywhere. The wind
+acted as the motive power, the bending and warping wings, and the
+rudders and weights controlling its force.</p>
+
+<p>&quot;I'm going higher, and see if I can remain stationary!&quot; yelled Tom in
+Ned's ear. His chum only nodded. Mr. Damon was seated on a bench,
+clinging to the sides of it as if he feared he would fall off.</p>
+
+<p>Higher and higher went the Vulture, ever higher, until, all at once, Tom
+pulled on another lever and she was still. There she hung in the air,
+the wind rushing through her planes, but the glider herself as still and
+quiet as though she rested on the ground in a calm. She hardly moved a
+foot in either direction, and yet the wind, as evidenced by the
+anemometer was howling along at a hundred and twenty miles an hour!</p>
+
+<p>&quot;Success!&quot; cried Tom. &quot;Success! Now we can lie stationary in any spot,
+and spy out the land through our telescope. Now we will find the lost
+platinum mine!&quot;</p>
+
+<p>&quot;Well, I'm not deaf,&quot; responded Ned with a smile, for Tom had fairly
+yelled as he had at the start, and there was no need of this now, for
+though the wind blew harder than ever it was not opposed to any of the
+weights or planes, and there was only a gentle humming sound as it
+rushed through the open spaces of the queer craft.</p>
+
+<p>Tom gave his glider other and more severe tests, and she answered every
+one. Then he came to earth.</p>
+
+<p>&quot;Now we'll begin the search,&quot; he said, and preparations were made to
+that end. The Russians, now that they had seen how well the craft
+worked, were not afraid to trust themselves in her.</p>
+
+<p>As I have explained, there was an enclosed car, capable of holding six.
+In this were stores, supplies and food sufficient for several days.
+Tom's plan was to leave the airship anchored on the edge of the wind
+zone, as a sort of base of supplies or headquarters. From there he
+intended to go off from time to time in the wind-swept area to look for
+the lost mine.</p>
+
+<p>There were weary days that followed. Hour after hour was spent in the
+air in the glider, the whole party being aboard. Observation after
+observation was taken, sometimes a certain strata of wind enabling them
+to get close enough to the earth to use their eyes, while again they had
+to use the telescopes. They covered a wide section but as day after day
+passed, and they were no nearer their goal, even Tom optimistic as he
+usually was, began to have a tired and discouraged look.</p>
+
+<p>&quot;Don't you see anything like the place where you found the mine?&quot; he
+asked of the exile brothers.</p>
+
+<p>They could only shake their heads. Indeed their task was not easy, for
+to recognize the place again was difficult.</p>
+
+<p>More than a week passed. They had been back and forth to their base of
+supplies at the airship, often staying away over night, once remaining
+aloft all through the dark hours in the glider, in a fierce gale which
+prevented a landing. They ate and slept on board, and seldom descended
+unless at or near the place where they had left the Falcon. Once they
+completely crossed the zone of wind, and came to a calm place on the
+other side. It was as wild and desolate as the other edge.</p>
+
+<p>Nearly two weeks had passed, and Tom was almost ready to give up and go
+back home. He had at least accomplished part of his desire, to rescue
+the exile, and he had even done better than originally intended, for
+there was Mr. Borious who bad also been saved, and it was the intention
+of the young inventor to take him to the United States.</p>
+
+<p>&quot;But the platinum treasure has me beat, I guess,&quot; said Tom grimly. &quot;We
+can't seem to get a trace of it.&quot;</p>
+
+<p>Night was coming on, and he had half determined to head back for the
+airship. Ivan Petrofsky was peering anxiously down at the desolate land,
+over which they were gliding. He and his brother took turns at this.</p>
+
+<p>They were not far above the earth, but landmarks, such as had to be
+depended on to locate the mine, could not readily be observed without
+the glass. Mr. Damon, with a pair of ordinary field glasses, was doing
+all he could to pick out likely spots, though it was doubtful if he
+would know the place if he saw it.</p>
+
+<p>However, as chance willed it, he was instrumental in bringing the quest
+to a close, and most unexpectedly. Peter Petrofsky was relieving his
+brother at the telescope, when the odd man, who had not taken his eyes
+from the field glasses, suddenly uttered an exclamation.</p>
+
+<p>&quot;Bless my tooth-brush!&quot; he cried. &quot;That's a most desolate place down
+there. A lot of trees blown down around a lake that looks as black as
+ink.&quot;</p>
+
+<p>&quot;What's that!&quot; cried Ivan Petrofsky. &quot;A lake as black as ink? Where?&quot;</p>
+
+<p>&quot;We just passed it!&quot; replied Mr. Damon.</p>
+
+<p>&quot;Then put back there, as soon as you can, Tom!&quot; called the Russian. &quot;I
+want to look at that place.&quot;</p>
+
+<p>With a long, graceful sweep the young inventor sent the glider back over
+the course. Ivan Petrofsky glued his eyes to the telescope. He picked
+out the spot Mr. Damon had referred to, and a moment later cried:</p>
+
+<p>&quot;That's it! That's near the lost platinum mine! We've found it again,
+Tom&mdash;everybody! Don't you remember, Peter,&quot; he said turning to his
+brother, &quot;when we were lost in the snow we crawled in among a tangle of
+trees to get out of the blast. There was a sheet of white snow near
+them, and you broke through into water. I pulled you out. That must have
+been a lake, though it was lightly frozen over then. I believe this is
+the lost mine. Go down, Tom! Go down!&quot;</p>
+
+<p>&quot;I certainly will!&quot; cried the youth, and pulling on the descending lever
+he shunted the glider to earth.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XXIV" id="CHAPTER_XXIV" />CHAPTER XXIV</h2>
+
+<h3>THE LEAKING TANKS</h3>
+
+
+<p>Like a bird descending from some dizzy height, the Vulture landed close
+to the pool of black water. It was a small lake and the darkness must
+have been caused by its depth, for later when they took some out in a
+glass it was as clear as a crystal. Then, too, there might have been
+black rocks on the bottom.</p>
+
+<p>&quot;Can it he possible that we are here at last?&quot; cried Tom, above the
+noise of the gale, for the wind was blowing at a terrific rate. But our
+friends knew better now how to adjust themselves to it, and the lake was
+down in a valley, the sides of which cut off the power of the gale. As
+for the glider it was only necessary to equalize the balance and it
+would remain stationary in any wind.</p>
+
+<p>&quot;This is the place! This is the place!&quot; cried Ivan Petrofsky. &quot;Don't you
+remember, Peter?&quot;</p>
+
+<p>&quot;Indeed I do! I have good cause to! This is where we found the
+platinum!&quot;</p>
+
+<p>&quot;Bless my soul!&quot; cried Mr. Damon. &quot;Where is it, in the lake?&quot;</p>
+
+<p>&quot;The mine itself is just beyond that barrier of broken and twisted
+trees,&quot; replied the elder Russian brother. &quot;It is an irregular opening
+in the ground, as though once, centuries ago, an ancient people tried to
+get out the precious metal. We will go to it at once.&quot;</p>
+
+<p>&quot;But it is getting late,&quot; objected Ned.</p>
+
+<p>&quot;No matter,&quot; said Tom. &quot;If we find any platinum we'll stay here all
+night, and longer if necessary to get a good supply. This is better than
+the city of gold, for we're in the open.&quot;</p>
+
+<p>&quot;I should say we were,&quot; observed Mr. Damon, as he bent to the blast,
+which was strong, sheltered even as they were.</p>
+
+<p>&quot;Will it be safe to remain all night?&quot; asked Mr. Borious, with a glance
+about the desolate country.</p>
+
+<p>&quot;We have plenty of food,&quot; replied Tom, &quot;and a good place to stay, in the
+car of the glider. I don't believe we'll be attacked.&quot;</p>
+
+<p>&quot;No, not here,&quot; said the elder Petrofsky. &quot;But we still have to go back
+across Siberia to escape.&quot;</p>
+
+<p>&quot;We'll do it!&quot; cried Tom. &quot;Now for the platinum treasure!&quot;</p>
+
+<p>They went forward, and it was no easy work. For the wind still New with
+tremendous force though nothing like what it did higher up. And the
+ground was uneven. They had to cling to each other and it was very
+evident that no airship, not even the powerful Falcon, could have
+reached the place. Only an air glider would answer.</p>
+
+<p>It took them half an hour to get to the opening of the ancient mine, and
+by that time it was nearly dark. But Tom had thought to bring electric
+torches, such as he had used in the underground city of gold, and they
+dispelled the gloom of the small cavern.</p>
+
+<p>&quot;Will you go in?&quot; asked Ivan Petrofsky, when they had come to the place.
+He looked at Tom.</p>
+
+<p>&quot;Go in? Of course I'll go in!&quot; cried our hero, stepping forward. The
+others followed. For some time they went on, and saw no traces of the
+precious metal. Then Ned uttered a cry, as he saw some dull, grayish
+particles imbedded in the earth walls of the shaft.</p>
+
+<p>&quot;Look!&quot; he cried.</p>
+
+<p>Tom was at his chum's side in a moment</p>
+
+<p>&quot;That's platinum!&quot; cried the young inventor. &quot;And of the very highest
+grade! But the lumps are very small.&quot;</p>
+
+<p>&quot;There are larger ones beyond,&quot; said the younger Russian brother.</p>
+
+<p>Forward they pressed, and a moment later coming around a turn in the
+cavern where some earth had fallen away, evidently recently, Tom could
+not repress a cry of joy. For there, in plain sight, were many large
+lumps of the valuable metal, in as pure a state as it is ever found. For
+it is always mixed with other metals or chemicals.</p>
+
+<p>&quot;Look at that!&quot; cried Tom. &quot;Look at that! Lumps as large as an egg!&quot; and
+he dug some out with a small pick he bad brought along, and stuffed them
+into his pocket.</p>
+
+<p>&quot;Bless my check book!&quot; cried Mr. Damon, &quot;and that stuff is as valuable
+as gold!&quot;</p>
+
+<p>&quot;More so!&quot; cried Tom enthusiastically.</p>
+
+<p>&quot;Oh, here's a whopping big one!&quot; cried Ned. I'll bet it weighs ten
+pounds.&quot;</p>
+
+<p>&quot;More than that!&quot; cried Tom, as he ran over and began digging it out,
+and they found later that it did. Platinum is usually found in small
+granules, but there are records of chunks being found weighing twenty
+pounds while others, the size of pigeons' eggs, are not uncommon.</p>
+
+<p>&quot;Say, this is great!&quot; yelled Ned, discovering another large piece, and
+digging it out.</p>
+
+<p>&quot;I am glad we could lead you to it,&quot; said the elder Russian brother. &quot;It
+is a small return for what you did for us!&quot;</p>
+
+<p>&quot;Nonsense!&quot; cried Tom. &quot;These must be a king's ransom here. Everybody
+dig it out! Get all you can.&quot;</p>
+
+<p>They were all busy, but the light of the two torches Tom had brought was
+not sufficient for good and efficient work, so after getting several
+thousand dollars worth of the precious metal, they decided to postpone
+operations until morning, and come with more lights.</p>
+
+<p>They were at the work soon after breakfast, the night in the air glider
+having passed without incident. The treasure of platinum proved even
+richer than the Russians had thought, and it was no wonder the Imperial
+government had tried so hard to locate it, or get on the trail of those
+who sought it.</p>
+
+<p>&quot;And it's all good stuff!&quot; cried Tom eagerly. &quot;Not like that low-grade
+gold of the underground city. I can make my own terms when I sell this.&quot;</p>
+
+<p>For three days our friends dug and dug in that platinum mine, so many
+years lost to man, and when they got ready to leave they had indeed a
+king's ransom with them. But it was to be equally divided. Tom insisted
+on this, as his Russian friends had been instrumental in finding it.
+Toward the end of the excavation large pieces were scarce, and it was
+evident that the mine was what is called a &quot;lode.&quot;</p>
+
+<p>&quot;Well, shall we go back now?&quot; asked Tom one day, after the finish of
+their mining operations. The work was comparatively simple, as the
+platinum lumps had merely to be dug out of the sides of the cave. But
+the loneliness and dreariness of the place was telling on them all.</p>
+
+<p>&quot;Can't we carry any more?&quot; asked Ned.</p>
+
+<p>&quot;We could, but it might not be safe. I don't want to take on too much
+weight, as my glider isn't as stable as the airship. But we have plenty
+of the metal.</p>
+
+<p>&quot;Indeed we have,&quot; agreed Ivan Petrofsky. &quot;Much of mine and my brother's
+will go toward helping relieve the sufferings of the Siberian exiles,&quot;
+he added.</p>
+
+<p>&quot;And mine, too,&quot; said Alexis Borious.</p>
+
+<p>They started back early the next morning in a more terrific gale than in
+any the glider had yet flown. But she proved herself a stanch craft, and
+soon they were at the place where they had left the airship. It was
+undisturbed.</p>
+
+<p>Four days were spent in taking apart the glider and packing it on board
+the Falcon. Then, with the platinum safely stored away Tom, with a last
+look at the desolate land that had been so kind to them, sent his craft
+on her homeward way.</p>
+
+<p>It was when they were near the city of Pirtchina, on the Obi river, that
+what might have proved a disastrous accident occurred. They were flying
+along high, and at great speed, for Tom wanted to make all the distance
+he could, to get out of Siberia the more quickly. They had had a fair
+passage so far, and were congratulating themselves that they would soon
+be in civilization again.</p>
+
+<p>Suddenly, Mr. Damon, who had been on the after deck, taking observations
+through a telescope, came running forward, crying out:</p>
+
+<p>&quot;Tom! Tom! What is that water dripping from the back part of the
+airship?&quot;</p>
+
+<p>&quot;Water?&quot; exclaimed Tom. &quot;No water is dripping from there.&quot;</p>
+
+<p>&quot;Come and look,&quot; advised Mr. Damon.</p>
+
+<p>The young inventor raced back with him. He saw a thin, white stream
+trickling down from the lower part of the craft. Tom sniffed the air
+suspiciously.</p>
+
+<p>&quot;Gasolene! It's gasolene!&quot; he cried. &quot;We must have a leak in the supply
+tanks!&quot;</p>
+
+<p>He dashed toward the reserve storeroom, and at that moment, with a
+suddenness that was startling, the motor stopped and the Falcon lurched
+toward the earth.</p>
+
+
+
+<hr style="width: 65%;" />
+<h2><a name="CHAPTER_XXV" id="CHAPTER_XXV" />CHAPTER XXV</h2>
+
+<h3>HOMEWARD BOUND&mdash;CONCLUSION</h3>
+
+
+<p>&quot;All right!&quot; yelled Ned, as soon as he heard Tom's cry. &quot;I've got her
+under control. We'll volplane down.&quot;</p>
+
+<p>&quot;Is it dangerous? Are we in danger?&quot; asked Peter Petrofsky of his
+brother, in Russian.</p>
+
+<p>&quot;I guess there's no danger, where Tom Swift's concerned,&quot; was the
+answer. &quot;I have not volplaned much, but it will be all right I think.&quot;</p>
+
+<p>And it was, for with Ned Newton to guide the craft, while Tom did his
+best to stop the leak, the craft came gently to earth on the outskirts
+of a fairly large Siberian city. Almost instantly the Falcon was
+surrounded by a curious throng.</p>
+
+<p>&quot;You had better keep inside,&quot; said Ivan Petrofsky to his brother and Mr.
+Borious. &quot;Descriptions of you are probably out broadcast by now, but I
+am still sufficiently disguised, I think.&quot;</p>
+
+<p>&quot;But what is to be done?&quot; demanded the younger Russian brother. &quot;If the
+gasolene is gone, how can we leave here?&quot;</p>
+
+<p>&quot;Trust Tom Swift for that,&quot; was the reply. &quot;Keep out of sight now, there
+is a large crowd outside.&quot;</p>
+
+<p>Tom came from the tank room. There was a despondent look on his face.</p>
+
+<p>&quot;It's all gone&mdash;every drop,&quot; he said. &quot;That's what made the motor stop.&quot;</p>
+
+<p>&quot;What's gone?&quot; asked Mr. Damon.</p>
+
+<p>&quot;The gasolene. We sprung a leak in the main tank, somehow, and it all
+flowed out while we were flying along.&quot;</p>
+
+<p>&quot;Haven't you any more?&quot;</p>
+
+<p>&quot;Not a bit. I was drawing on the reserve tank, hoping to get to
+civilization before I needed more. But its too late now. We will have
+to&mdash;&quot;</p>
+
+<p>&quot;Bless my snow shoes!&quot; cried Mr. Damon. &quot;Don't say we'll have to stay
+here&mdash;in Siberia! Don't say that. My wife&mdash;&quot;</p>
+
+<p>&quot;No, we won't have to stay here if we can get a supply of kerosene,&quot;
+interrupted Tom. &quot;The motor will burn that. The only trouble is that we
+may be detained. The authorities probably know us by this time, and are
+on the watch.&quot;</p>
+
+<p>&quot;Then get it before they know we are here,&quot; advised Ned.</p>
+
+<p>&quot;I'll try,&quot; said Tom, and he at once conferred with the elder Petrofsky.
+The latter said he was sure kerosene could be had in town, and, rather
+than risk going in themselves, they hired a wagoner who agreed, for
+liberal pay, to go and return with a quantity. Until then there was
+nothing to do but wait.</p>
+
+<p>Meanwhile the crowd of curiosity seekers grew. They thronged around the
+airship, some of them meddling with various devices, until Tom had to
+order them away with gestures.</p>
+
+<p>One particularly inquisitive man insisted on pulling or twisting
+everything, until he happened to touch a couple of live wires, giving
+himself quite a shock, and then he ran away howling. But still the crowd
+increased, and at last Mr. Petrofsky said:</p>
+
+<p>&quot;I don't like this, Tom?&quot;</p>
+
+<p>&quot;Why not?&quot; They were all inside the craft, looking out and waiting for
+the return of the man with the kerosene. The leak in the tank had proved
+to be a small one, and had quickly been soldered. It had been open a
+long time, which accounted for the large amount of gasolene escaping.
+&quot;What don't you like, Mr. Petrofsky?&quot;</p>
+
+<p>&quot;So many men surrounding us. I believe some of them are officers dressed
+in civilians' clothes, and a Russian officer never does that unless he
+has some object.&quot;</p>
+
+<p>&quot;And you think the object is&mdash;?&quot;</p>
+
+<p>&quot;To capture us.&quot;</p>
+
+<p>&quot;If it was that, wouldn't they have done it long ago&mdash;when we first came
+down?&quot;</p>
+
+<p>&quot;No, they are evidently waiting for something perhaps for some high
+official, without whose orders they dare do nothing. Russia is overrun
+with officialdom.&quot;</p>
+
+<p>And a little later Ivan Petrofsky's suspicion proved true. There arrived
+a man in uniform, who spoke fairly good English, and who politely asked
+Tom if he would not delay the start of the airship, again, until the
+governor could arrive from his country place to see it.</p>
+
+<p>&quot;We know you are going to leave us,&quot; said the Russian with a smile, &quot;for
+you have sent for kerosene. But please wait.&quot;</p>
+
+<p>&quot;If your governor comes soon we'll wait,&quot; replied Tom. &quot;But we are in a
+hurry. I wish that kerosene fellow would get a move on,&quot; he murmured.</p>
+
+<p>&quot;Oh, he will doubtless be here soon,&quot; said the officer. &quot;Might I be
+permitted to come aboard and wait for my chief?&quot;</p>
+
+<p>&quot;Sorry, but it's not allowed,&quot; replied our hero, straining his eyes down
+the road for a sight of the wagoner. At last he came, and Tom breathed
+easier.</p>
+
+<p>But the crowd was bigger, and some of the men, though poorly dressed,
+seemed to be persons in authority. Tom had no doubt but what there was a
+plot afoot to detain him, and arrest the exiles, and that there were
+disguised soldiers in the throng. But they could not act without the
+governor's orders, and he was probably on his way with all haste.</p>
+
+<p>&quot;Lively now, get that kerosene in the tanks!&quot; cried Tom to the man,
+motioning in lieu of using Russian. The youth was not going to meet the
+governor if he could help it.</p>
+
+<p>Now it was a curious thing, but the more that wagoner and his helpers
+seemed to try to hurry, and pour the oil from the cans into the
+tank-opening of the airship, the slower they worked. They got in each
+others' way, dropped some cans, spilled others, and in general made such
+poor work at it that Tom saw there was something in the wind.</p>
+
+<p>&quot;Ned!&quot; he exclaimed, &quot;they're doing all they can to detain us. We've got
+to put that oil in ourselves. Just as we did the gasolene in France.
+It's the same sort of a delay game.&quot;</p>
+
+<p>&quot;Right, Tom! I'm with you.&quot;</p>
+
+<p>&quot;And I'll warn the crowd back, by telling them we are likely to blow up
+any minute!&quot; added Ivan Petrofsky, which warning he shouted in Russian a
+moment later.</p>
+
+<p>Backward leaped the throng, as though a bomb bad been thrown into their
+midst, even the supposed officers joining in the retreat. The oil wagon
+was now easy of access, and Tom and Ned, with Mr. Damon to aid them,
+hastened toward it. Then the work of filling the tanks went on in
+something like good old, United States fashion.</p>
+
+<p>The last gallon of kerosene had been put aboard, and Tom and Ned with
+Mr. Damon, had climbed on deck, when the gaily uniformed officer, who
+had requested the delay, came riding up furiously.</p>
+
+<p>&quot;Hold! Hold! If you please!&quot; he cried. &quot;The governor has come. He wants
+to see you.&quot;</p>
+
+<p>&quot;Too late!&quot; answered Tom. &quot;Give him our best regards and ask him to some
+to the United States if he wants to see us. Sorry we haven't cards
+handy. Ned, take the pilot house, and shoot her up sharp when you get
+the signal. I'm going to run the motor. I don't know just how she'll
+behave on the kerosene.&quot;</p>
+
+<p>&quot;You must remain!&quot; angrily cried the officer.</p>
+
+<p>&quot;The United States doesn't take 'must' from anybody, from the Czar
+down!&quot; cried Tom as he disappeared into the motor room. The window was
+open, and the youth turned on the power the official cried again to him:</p>
+
+<p>&quot;Halt! Here comes the governor! I declared you arrested by his orders,
+and in the name of the Czar!&quot;</p>
+
+<p>&quot;Nothing doing!&quot; yelled Tom, and then, looking from the window, he saw
+approaching a troop of Cossacks, in the midst of whom rode a man in a
+brilliant uniform&mdash;evidently the governor.</p>
+
+<p>&quot;Stop! Stop!&quot; cried the official.</p>
+
+<p>&quot;Here we go, Ned!&quot; yelled Tom, and turning on more power the Falcon
+arose swiftly, before the very eyes of the angry governor, and his staff
+of Cossack soldiers.</p>
+
+<p>Up and up she went, faster and faster, the motors working well on the
+kerosene. Higher and higher. The governor and his soldiers were directly
+below her now.</p>
+
+<p>&quot;Stop! Stop! You must stop. The Imperial governor orders it!&quot; yelled the
+officer, evidently his Excellency's aide-de-camp.</p>
+
+<p>&quot;We can't hear you!&quot; shouted Tom, waving his hand from the motor room
+window, and then, turning on still more power he flew over the city,
+taking his friends and the valuable supply of platinum with him. So
+surprised were the soldiers that they did not fire a shot, but had they
+done so it is doubtful if much damage could have been done.</p>
+
+<p>&quot;And now for home!&quot; cried Tom, and homeward hound the Falcon was after a
+perilous trip through two storms. But she weathered them well.</p>
+
+<p>In due season they reached Paris again, and now, having no reason for
+concealment, they flew boldly down, to change what remained of the
+kerosene for gasolene, as the motor worked better on that. The secret
+police learned that the exiles were aboard, but they could do nothing,
+as the offenses were political ones, and so Tom kept his friends safe.</p>
+
+<p>Then they started on the long voyage across the Atlantic, and though
+they had one bad experience in a storm over that mighty ocean, they got
+safely home to Shopton in due season.</p>
+
+<p>There is little more to tell. The platinum proved to be even more
+valuable than Tom had expected. He could have sold it all for a large
+sum, but he preferred to keep most of what he had for his inventive
+work, and he used considerable of it in his machinery. Ned disposed of
+his, selling Tom some at a lower price than market quotations, and the
+Russians got a good price for theirs, turning the money into the fund to
+help their fellow exiles. Mr. Damon also made a good donation to the
+cause, as did Tom and Ned.</p>
+
+<p>Mr. Petrofsky and his brother, with the other exile, joined friends in
+New York, and promised to come and see Tom when they could.</p>
+
+<p>&quot;Well, I suppose you'll take a long vacation now,&quot; said Mary Nestor, to
+Tom, when he called on her one evening to present her a unique ring,
+with the stones set in some of the platinum he had dug in the Siberian
+mine.</p>
+
+<p>&quot;Vacation? I have no time for vacations!&quot; said the young inventor. &quot;I'm
+soon going to work on my silent airship, and on some other things I have
+in mind. I want more adventures.&quot;</p>
+
+<p>&quot;Oh, you greedy boy!&quot; exclaimed Mary with a laugh.</p>
+
+<p>And what adventures Tom had next will be found in the next book of this
+series, which will be entitled, &quot;Tom Swift in Captivity; Or, a Daring
+Escape by Airship.&quot;</p>
+
+<p>Tom had several offers to give exhibitions in his air glider, from
+aviation committees at various meets, but he declined.</p>
+
+<p>&quot;I haven't time,&quot; he declared. &quot;I'm too busy.&quot;</p>
+
+<p>&quot;You ought to rest,&quot; his chum Ned advised him.</p>
+
+<p>&quot;'Bless my alarm clock!' as Mr. Damon would say,&quot; exclaimed Tom. &quot;The
+best rest is new work,&quot; and then he began sketching his ideas for a
+silent motor craft, during which we will take leave of him for a while.</p>
+
+<pre>
+
+
+
+
+
+End of Project Gutenberg's Etext of Tom Swift And His Air Glider
+</pre>
+
+</body>
+</html>
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