The Great Airship: A Tale of Adventure.

"Why? Where's the reason?"

"To protect her against gusts of wind and gales. A Zeppelin can't escape. Every breath plays on her big lateral bulk. In my ship the wind strikes a thin keel on whichever side it comes, is divided there, and passes over and under the ship, sliding as it were upwards and downwards away from the gradually-sloping surfaces which lead from those keels. In fact, the ship is almost as flat as a tortoise, and as wide comparatively, though she's very much longer."

"And – and this flattening of the ship makes her laugh at gales?" asked Andrew, staring at the plans before him.

"Certainly – her shape, and other fittings. Now, let's return to the Zeppelin. It's a huge framework of aluminium, built very light and covered with a material of neutral tint."

"Which holds the necessary gas."

"No, Uncle. Which merely covers the aluminium skeleton. Inside the frame there are twenty or more balloonettes, inflated with gas. Thus if one bursts, or two, or more even, the ship still floats."

"Canny that! Smart!" declared Andrew. "Well, yours? It's a similar framework, I suppose? The same balloonettes? Where does the difference come?"

Joe bent again to his bag and produced a parcel, which he rapidly opened. He drew from the interior a sheet of shining material, which might have been glass but for the fact that it was folded half a dozen times. Placing it on the table, this sheet opened to its full capacity as soon as the weight of his fingers was removed.

"Flexible and elastic, you see, Uncle," said Joe. "And yet not extensible. See – it does not stretch. Transparent, of course – one of its least advantages – but yet one of great value in the construction of an airship."

"What! You don't mean to tell me you build the ship of that? How? What part does it form? I – look here, Joe, you're romancing."

Joe smiled; his deep-sunk eyes took on the clever expression, to which his uncle had become familiar. He placed two long objects on the table, and stood leaning the tips of his strong fingers upon them. He might have been a lecturer, and his uncle a student about to absorb his wisdom. As for the objects he had placed on the table, one was a long piece of the same transparent material, an eighth of an inch thick, perhaps, two inches wide before it was bent, and now bent all the way down its length into a right angle. In fact, composed of iron it would be known simply as "angle iron". The other object was a tube, perhaps half an inch in diameter, two feet in length, and of thinner material. Both were transparent, and exceedingly light in weight, as Andrew assured himself instantly.

"Go on," he said huskily. "What is the stuff? Not talc – that I can tell easily. Not celluloid either – you'd never be such a fool as to build a ship of such a highly inflammable material. That stuff's lighter, also. What is it?"

But Joe was not yet to be persuaded into an answer. He spread the thin transparent sheet out, caught the four corners, and taking a jug of water, poured some of the contents into the centre of the sheet. Not a drop penetrated it. Joe demonstrated the fact quietly and without show of haste. Then he stepped to the window and cast the water out. A moment later he was striking a match.

"Stop! Stop! How do I know that it isn't like celluloid?" cried Andrew in some alarm. "Supposing it fires. Supposing there's an explosion."

Joe smiled. "It won't," he said curtly. "Look there."

The flame was licking round one of the corners of this thin sheet of material. It blackened the surface above, while that below, immersed in the flame, gradually changed colour. It became a dull red, then got redder and redder till it was glowing. Slowly it changed its form, the corner curled up into a globule. The latter separated itself from the sheet and tumbled on to the glass-topped table, where it broke into a number of smaller drops.

"Glass! No – too light by far. Not celluloid. Not talc. Then what is it?" demanded Andrew impatiently, taking the various articles and examining them. "Why, this angle piece is strong – as strong as aluminium!" he cried.

"Stronger – stronger and tougher," asserted Joe. "You can bend it; it's flexible. You can bend it double, and still it comes back to its original formation. Aluminium would crack at once; even steel would. Now, try the tube. See, it kinks when you bend it, though it requires some strength to do that. Now, set it on its end on the floor; we'll put a book on the top end. Sit on the book, Uncle."

Andrew did so – gingerly it must be confessed – for this transparent tube with its small diameter and its walls less than an eighth of an inch in thickness looked as if it would at once succumb to his avoirdupois. But it did not. He sat boldly upon the book now. He balanced himself upon the frail support and jerked his feet from the ground.

"Jingo!" he cried. "What in thunder is the stuff? It's strong, strong as possible. Surprisingly powerful stuff. It bends if you use sufficient force, yet doesn't break. It's tough; you've shown me that, for a knife edge bites into it with difficulty. Then it softens and melts at a fairly high temperature, proving that it can be easily treated and moulded. Well?"

"I call it celludine," said Joe, not without some trace of pride in his tuneful voice." I dropped upon the stuff quite by accident, for at the 'Varsity' I was fond of working in a laboratory. Asbestos enters into its composition, that I can tell you. It is easily manufactured, the materials of which it is composed are inexpensive. It can be rolled into plates and bars and drawn into tubes. Better than all, perhaps, when bars and tubes and angle pieces are being built into a framework rivet holes can be punched with the simplest pneumatic tool, while the joins and the rivets can be instantly and securely welded together with an electric heating iron. Thus every joint becomes a solid piece."

Andrew wiped his forehead – this was something – he even chuckled.

"Reitberg'd have fits," he laughed. "He'd be beginning to get anxious about that money if he heard what you were saying. But get along. This stuffs fine. I can see that, and I'm quite a child in such matters."

"Then it is hardly necessary for me to explain that I build my framework of this celludine. That frame is wonderfully strong, stronger a great deal than if composed of aluminium, and constructed far more rapidly and at less cost. It has another advantage Zeppelins have broken up before now, simply because certain portions of their frames have fractured under great strain. With this material the flexibility is such that the frame gives before a strain, grudgingly it is true, but gives without receiving damage, and instantly returns to its former shape once the strain is removed. Now let us proceed. I cover the frame with the same material. It is waterproof and gas-proof. Note that, Uncle. I fashion partitions of the same material. Thus my balloonettes are formed. There is no need for the twenty and more balloonettes. All that weight is removed. There are merely the partitions and the outer covering, and since celludine is the lightest material of any that I have yet discovered, you can follow that here I have a material with which I can make a ship at once lighter than a Zeppelin, though of equal size, while it is stronger and more flexible. Add the important fact that the whole thing is transparent."

"Eh? Why? Where does the advantage come?"

It was natural, perhaps, that Andrew should not follow his reasoning so quickly.

"Imagine the ship to be inflated and in the air," said Joe. "Well, gas is transparent. So's the framework of the ship. She is invisible almost, except for engines and gear of a similar description."

This time his uncle mopped his forehead busily. He was glad that he had taken up that challenge. He was beginning to hope that some day it might be his turn to gloat over Mr. Reitberg. He could even conjure up the huge airship which Joe Gresson would build. Facts were in his case far easier of digestion than any amount of theorizing, and here his nephew was providing him with facts. As a practical man Andrew could decide that this celludine was essentially suitable for the building of a vessel to sail the air. Now he could realize better than ever that success was possible. But a few hours ago he had been content to take Joe's mere word for it. His own common sense now supported that belief. He drew in a series of deep breaths, while he handled the samples before him. Unconsciously it seemed his hand sought his handkerchief and he mopped his fevered brow. Then he drew a cheque book from an inner pocket, seated himself at a desk, and took up a pen.

"Pay Joseph Gresson ten thousand pounds," he wrote, and attached his signature.

"There," he said, with a beaming smile, smacking his nephew heartily on the back, "get to at the work, Joe. Call for more when you want it. Don't stint yourself; spend freely if necessary, for there's no time to waste. We've got to be up and doing. I'll teach Mr. Reitberg to have a better respect for Britishers. What others can do, we can. Gosh! We'll have that ship sailing before he's finished chuckling at our helplessness."

We leave him then for the moment, filled to the brim with enthusiasm, while we step aside to introduce a person of no little importance, namely, Mr. Midshipman Hamshaw, R.N., Dick Hamshaw, lately out of Dartmouth Naval College, and already known by officers and men as simple and plain Dicky.

CHAPTER III

Dicky Hamshaw, Midshipman

"Of all the little bantams 'e's it," quoth Able Seaman Hawkins of H.M.S. Inflexible in a deep, hoarse whisper, leaning over the tiller of the steam pinnace he was steering to place his thick lips close to the huge ear of his comrade. "That 'ere shaver's just it all the time and no mistake about it."

A long tongue of flame shooting out through the stumpy funnel of the vessel at that precise moment lit up the afterpart, disclosing the fact that Seaman Hawkins's face was divided by an expansive grin, while Able Seaman Hurst's rugged and none-too-handsome features seemed to be made up mostly of two rows of irregular teeth. The short stem of an extremely black pipe was gripped between those same teeth, while smoke was issuing from the nostrils. But a second later the pipe was dragged from its position and found its way with extreme rapidity into a pocket.

"Stop that talking, men! One can't hear. Silence aft!"

The command came in quick, decisive tones, and yet in a voice that betrayed the youth of the officer. For Dicky Hamshaw was young, painfully young, we must admit. When he stepped the decks of His Majesty's battleships no one deplored that fact more than Mr. Midshipman Hamshaw. It was a defect which time would undoubtedly eradicate, but for the moment it was annoying, to say the least of it. For ever on the faces of the tars beneath his immediate command there lurked a queer demureness, an indefinite something which he could never actually fathom, but which told him as plainly as words that he was almost an object of amusement. Not of ridicule, let us explain. No other officer's orders were obeyed more smartly than those of Mr. Midshipman Hamshaw, while your British tar is far too jealous of his good name to ridicule an officer, even if such a thing were not decidedly contrary to discipline. No; Dicky Hamshaw was very young, and looked younger than his seventeen and a half years. Not a hair yet adorned his upper lip, and there was not even a suspicious down budding from the square chin of which he boasted. He was merely disgustingly young in appearance, tall and slim and active, and full of a dash and jollity which had long since captivated the tars.

"Just it – nothing more," repeated Hawkins in a hoarse whisper to Hurst. "A bantam that's full of fight, and don't you make no mistake about it."

Precisely what "it" meant on this occasion the burly Hawkins did not stoop to explain, and apparently Hurst needed no enlightenment. He nodded, expanded his capacious jaws again, and then slowly introduced the stem of his clay between his strong teeth.

"Stop that smoking aft! There's someone smoking."

Once more the order rang out crisp and clear, and in those very juvenile tones. Let us say at once that it was Dick's boyish voice, perhaps more than his youthful appearance, which excited the smiles of his men. But in any case the crisp tones meant business. Hurst slid his pipe back into its receptacle with alacrity and grimaced through the gloom at his comrade.

"And 'e's got a nose," he ventured to Hawkins when a few moments had elapsed. "Here are we away aft, and you'd have said as all the smoke was blowed clear away behind us. But Dicky's got a nose for it. Blest if he couldn't tell you what 'bacca it was. Not ship's I can tell you, mate, but a bit of cake bought ashore at a place I knows of. What's he up to?"

"Keep her away a point to starboard," suddenly came from the midshipman. "That'll do. Hold her so and keep her steady on that course. I fancy we must be somewhere near the spot Anyone hear anything?"

"Nothing, sir?" came from Hurst, while Hawkins opened his thick lips to cry "Aye! aye! sir," in recognition of the order given him. "Steady it is, sir. Fancied I heard a cry away over here a minute or more ago, but I ain't sure. There's no sayin'."

"Then keep your ears open, men, and – Hawkins."

"Aye, aye, sir."

"As we're away from the ship and it's dark I've no particular objection to Hurst's smoking. All you men can smoke; but please don't forget to listen carefully."

Had it not been dark expansive grins could have been seen on the faces of the half-dozen tars manning this steam pinnace. For here was a privilege granted without the asking, and one, too, which every one of the men could fully appreciate. It was just one of those thoughtful actions for which Dicky had become almost famous since he became a full-fledged midshipman, and which added so much to his popularity. As for Hurst, the mention of his own name caused him to bring one broad palm with a resounding smack against his thigh. Hawkins could hear him gurgling, and then listened to his low-toned whisper.

"Did you hear that? Spotted who was smoking. Spotted it was me," he said hoarsely, his tones betraying delight if anything. "If that don't beat me handsome! Here's he away for'ard a-listening for shouts and cries, while the pinnace steams against the wind. He spots as someone's smoking. And he says as sure as he can make it that it's me. That's smart, mate, ain't it?"

"It's jest common sense, that's all," came the rejoinder. "Dicky ain't asleep, not by a long way. He knows his men better perhaps than a sight of the orfficers. And he knows you, Bill, and the smell of that 'ere pipe. That's where his smartness comes in. He puts things together quick, same as he'll clear up this here little business that's brought us away from the ship at a time when we ought to be turnin' down and alookin' forward to our suppers. Did you hear what it is exactly? They was mighty quick in pipin' us away. It's something particular."