Victor Appleton

“ My gun burst!" murmured General Waller, as if unable to comprehend it. "My gun burst—it is impossible!"
"But it did," spoke Admiral Woodburn, softly. "Come, you had better see the surgeon. You may be more seriously injured than you think."
"Was anyone else hurt?" asked the inventor, listlessly. He seemed to have lost all interest, for the time being.
"No one seriously, as far as we can learn," was the answer.
"What of the man who fired the gun?" inquired the General.
"He was blown high into the air," said Tom. "I saw him." ”

“ Then, as Tom's great shot had, by means of the exploding projectile, torn down the barrier, the water chose the more direct and shorter path. With a mighty roar, like a distant Niagara, it swept into the new channel the young inventor had made. Into the transverse valley it tumbled and tossed in muddy billows of foam, and only a small portion of the flood added itself to the already swollen creek. ”

“ And the noise that filled the valley seemed like a thousand thunderbolts merged into one.
Tom rushed from the bomb-proof, dropping the electric button. He caught sight of his gun, resting undisturbed on the improvised carriage.
"Hurray!" he cried in delight. "She stood the charge all right. And look! look!" he cried, as he pointed the glasses toward the distant hillside. "There goes my projectile as straight as an arrow. ”

“ The warship was pitching and tossing worse than ever in the heaving billows, and the men were engaged in making fast the giant cannon, which, as Tom had surmised, had torn loose from the steel cables holding it down on deck.
"Come on, Ned!" cried Tom. "We've got to help here!"
"That's right. Look at her swing, would you? If she hits anything it's a goner!"
The breech of the gun appeared to be the end that had come loose, while the muzzle still held fast And this immense mass of steel was swinging about, eluding the efforts of the ship's officers and crew to capture it. ”

“ KOKU'S BRAVE ACT
"Tom! Tom!" cried Ned, as he watched the disappearing figure of his chum. "Come back here! If there's going to be an explosion we ought to run out of the back door!"
"I'm not running away!" flashed back Tom. "I'm going to get that powder out of the auto before it goes up! If it does we'll be blown to kingdom come, back door or front door! Come on!"
"Bacon and eggs!" yelled Ned. "He's running an awful risk! But I can't let him go alone! I guess we're in for it!" ”

“ OFF TO SANDY HOOK
"What's the idea of this government test of the big gun, Tom?" asked Ned. "I got so excited about that near-explosion the other day, that I didn't think to ask you all the particulars."
"Why, the idea is to see if the gun will work, and do all that the inventor claims for it," was the answer. "They always put a new gun through more severe tests than anything it will be called on to stand in actual warfare. They want to see just how much margin of safety there is." ”

“ The man hastened out, murmuring something about "rash and foolhardy people."
"What are you going to do, Tom?" aske'd Ned.
"Stay right here."
"But if the dam bursts?"
"It may not, but, if it does, we'll be safe. I have had a look at the water, and there's no chance for it to rise here, even if the whole dam went out at once, which is not likely. Don't worry. We'll be all right."
"Bless my checkbook!" cried Mr. Damon. "But what about those poor people in the valley?"
"They will have time to flee, and save their lives," spoke the young inventor; "but they may lose their homes. ”

“ This was several days after our friends had returned from the disastrous gun test at Sandy Hook. Tom had at once gotten to work on the problem that confronted him—a problem of his own making—to build a giant cannon that would make the longest shots on record. And he had first turned his attention to the powder, or explosive, to be used.
"For," he said, "there is no use having a big gun unless you can fire it. And the gun I am planning will need something more powerful in the powder line than any I've ever heard of." ”

“ Tom let it flame for a few seconds, and then calmly blew it out.
"You know what a little puff black gunpowder gives, if you burn some openly on the ground," went on Tom; "don't you, Ned?"
"Sure, I've often done that."
"But put that same powder in a tight box, and set fire to it, and you have a bang instead of a puff. It's the same way with this powder, only it doesn't even puff, for it burns more slowly.
"An explosion, you see, is the sudden liberation at one time of the gases which result when the powder is burned. If the gases are given off gradually, and in the open, no harm is done. ”

“ It's a big problem, Ned."
"Do you think you can solve it? Are you still going on with your plan to build the biggest cannon ever made?"
"I sure am, Ned, though I don't know that I'll make out any better than General Waller did. It's too bad his was a failure; but I think I see where he made some mistakes."
"Oh, you do; eh?" suddenly exclaimed a voice, and from a nearby parapet, where he had gone to look at one of the pieces of his gun, stepped General Waller. "So you think I made some mistakes, Tom Swift? Where, pray?" ”

“ But even the great facilities of the steel corporation proved almost inadequate for Tom's giant cannon. When he showed the drawings, on which he had already secured a patent, the manager balked.
"We can't cast that gun here!" he said.
"Oh, yes, you can!" declared Tom, who had inspected the plant. "I'll show you how."
"Why, we haven't a mould big enough for the central core," was another objection.
"Then we'll make one," declared Tom. "We'll dig a pit in the earth, and after it is properly lined we can make the cast there." ”

“ Damon had caught a glimpse of the youthful inventor in his airship. "A great lad. I wish he could come on this mine-hunt with me, though I'd never consent to go in an airship. They're too risky for an old man like me."
"They're as safe as a church when Tom Swift runs them!" declared Mr. Damon. "I'm, no boy, but I'd go anywhere with Tom."
"I'm afraid you wouldn't get Tom to go with you, Alec," went on Mr. Swift, as he resumed his chair, the young inventor in his airship having passed out of sight. "He's busy on some new invention now, I believe. ”

“ You see, Ned, there is, theoretically, nothing to prevent the casting of a steel rifled cannon that would be fifty inches across at the muzzle, and making it a hundred feet long. I mean it could be done on paper—figured out and all that. But whether you would get a corresponding increase in power or range, and be able to throw a relatively larger projectile, is something no one knows, for there never has been such a gun made. Besides, the strain of the big charge of powder needed would be enormous. So I don't want merely to make a giant cannon. ”

“ With eager eyes Tom and Ned watched the preparations for firing the big gun. The charge of powder was hoisted out of the bomb-proof chamber below the barbette, and then the great projectile was brought up in slings. At the sight of that Tom realized that the gun was no ordinary one, for the great piece of steel was nearly three feet long, and must have weighed nearly a thousand pounds. ”

“ Then, one day, he and Ned, with Koku and Mr. Damon, visited the scene of the great shot. As Mr. Peterson had said, the whole top of the mountain had been blown off by the explosive shell, opening up the old mine. While it was not quite as rich as Mr. Peterson had glowingly painted, still there was a fortune in it, and Mr. Swift got back a substantial sum for his investment.
"And now for the good old U. S. A.!" cried Tom, as they got ready to go back home. "I'm going to take a long rest, and the only thing I'm going to invent for the next six months is a new potato slicer." ”

“ Well, I don't believe you'll succeed. I intend to rebuild my gun at once, though I may make some changes in it. I am sure I shall succeed the next time. But as for you—a mere youth—to hope to rival men who have made this problem a life-study—it is preposterous, sir! Utterly preposterous!" and he uttered these words much as he had declared that it was impossible for his gun to burst, even after it was in fragments.
"Come on, Ned," said Tom, in a low voice. "We'll go back home." ”

“ In the first place your test fails—you learn, then, that your powder has been tampered with—you see a man riding away in haste after having, in all likelihood, spied on your work—your giant servant recalls the visit of a mysterious man, and, when the word 'German' is pronounced in his hearing he recalls that his visitor was of that nationality. ”

“ He handed them to the fortune-hunter, who came running back with the rubber gloves. Mr. Damon was no more than half way to the power house, which was quite a distance from the Swift homestead. Meanwhile Tom's airship was slipping more and more, and a thick, pungent smoke now surrounded it, coming from the burning insulation. The sparks and electrical flames were worse than ever.
"Just a moment now, and I'll have you safe!" cried the fortune-hunter, as he again mounted the ladder. Luckily the charged wire was near enough to be reached by going nearly to the top of the ladder. ”

“ If this country gets a big cannon, some other nation will want a bigger one. It's a constant warfare. I'm going to devote my talents—such as they are—to Uncle Sam. I'm going to make the biggest cannon in the world—the one that will shoot the farthest and knock into smithereens all the other big guns. ”

“ It was a miraculous escape."
"I am glad of it," said General Waller. "It is bad enough to feel that I made some mistake, causing the gun to burst; but I would never cease to reproach myself if I felt that the man who fired it was killed, or even hurt."
His friends led him away, and Tom and Ned went over to look at what remained of the great gun. Truly, the powder, expending its force in a direction not meant for it, had done terrific havoc. Even part of the solid concrete bed of the barbette had been torn up. ”

“ Tom Swift took one last look through the telescope sights of his giant cannon. He changed the range slightly by means of the hand and worm-screw gear, and then, with the others, ran to the shelter of the cave. For, though the gun had stood the previous tests well, Tom had used a heavier charge this time, both in the firing chamber and in the projectile, and he wanted to take no chances.
"All ready?" asked the young inventor, as he looked around at his friends gathered in the cave. ”

“ General Waller soon took his departure, promising to call again, to see Tom's test if one were held. He also repeated his determination to set the Secret Service men at work to discover the mysterious German.
"I can't imagine who would want to injure you or me, Tom Swift," he said.
"Do you think they wanted to injure you, General?" asked Mr. Damon.
"It would seem so," remarked Ned. "That man doped Tom's powder, hoping to make it so powerful that it would blow up everything. Then he sends word to the General to be present. If there had been a blow-up he would have gone with it." ”

“ Don't come too close!" yelled the young inventor, as he clung to the seat of the aeroplane, that was tilted at a dangerous angle. "Keep away!"
"What's the matter?" demanded Mr. Damon, "Bless my pocket comb—what is it?"
"A live wire!" answered Tom. "I'm caught in a live wire. The trailer attached to the wireless outfit on my airship is crossed with the wire from the power plant. There's a short circuit somewhere. Don't come too close, for it may burn through any second and drop down. Then it will twist about like a snake!"
"Land ob massy!" cried Eradicate.
"What can we do to help you?" ”

“ It was probably of uneven strength. That is only my opinion, sir."
"Well, you are rather young to give opinions to men who have devoted almost all their lives to the study of high explosives."
"I realize that, sir; but you asked me for my opinion. I shall hope to profit by your mistakes, too. That is one reason I wanted to see this test"
"Then you are seriously determined to make a gun that you think will rival mine."
"I am, General Waller."
"For what purpose—to sell to some foreign government?"
"No, sir!" cried Tom, with flashing eyes. ”