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CHAPTER VIII. – THE DERELICT DESTROYER

Assuredly it was a surprising sight that greeted the eyes of Harry and Ben Stubbs as the latter pulled the skiff around the point. Not half a mile away lay a dull, gray-colored craft like a gunboat, with the Stars and Stripes floating from her stern. From her bow a puff of smoke was drifting away, showing that she had been the craft that had fired the shot which had aroused them.

But what could she be doing? Above all, why had the shot been fired? Harry’s eyes furnished the answer as he saw that part of the rail of the schooner was missing, a jagged break showing where it had been torn away.

“Great guns!” shouted Ben, “they’ve bin firin’ at your old hulk.”

As he spoke there was a flash from the side of the lead-colored craft, and a projectile shrieked by above the pair in the boat, causing them to duck involuntarily.

“Cracky!” shouted Harry, “I’ve got it. That craft is a derelict destroyer. One of Uncle Sam’s craft whose duty it is to put obstructions to navigation out of the way.”

“You’re right, boy, and they are bent on sending that there Betsy Jane to the bottom.”

“We must stop them,” ejaculated Harry excitedly; “that schooner is wanted by Mr. Perkins to use in his experiments. That’s why he had the runway built. We must signal them somehow.”

“No need to, lad. See, here comes a boat.”

Sure enough, as he spoke a cutter was lowered from the warlike-looking vessel’s side, and before long, impelled by muscular arms, it was flying over the water toward the hulk.

“Pull round and meet them,” suggested Harry.

But Ben was already doing that very thing. So fast did the government cutter approach that just as the skiff was rounding the stern of the ill-used Betsy Jane, the former craft, with a dapper young officer in the stern, was drawing alongside the hulk.

The astonishment of the officer was great when Harry explained matters.

“It’s lucky that I decided to make an examination into the effect of the shots already fired before I finished her up,” he laughed. “I am in command of the United States derelict destroyer Seneca, yonder. We’ve just despatched an old hulk some miles out at sea, and when, on our return down the coast, we saw your old hull, we thought it was a good chance to try out a new kind of gun we have to despatch these menaces to navigation.”

“I’m glad we heard your first shot in time to explain matters,” said Harry; “this craft belongs to Dr. Perkins, the aëronautical inventor, who wishes to use it in some experiments. As I told you, I unfortunately drifted to sea in it when some rascals cut the rope.”

The officer sympathized to the full with Harry and offered to give him a spark plug for his motor boat from a supply carried for a similar craft on board the Seneca.

“But,” he continued, “I’ve got a better plan than that. I’m bound down the coast. I know Dr. Perkins slightly and should be glad to do him a service. Why not accept a tow from me? I’ll get you to Brig Island by nightfall anyway, and that’s much quicker than you could tow this hulk with the motor boat, even if you could get her off the sand.”

Harry gladly agreed to this arrangement. A line was made fast to the Betsy Jane and affixed to the towing bitts of the derelict destroyer. The tide by this time had turned, and after a short struggle the Betsy Jane once more floated in deep water.

“I don’t know if this is exactly regular,” remarked the young officer in command, when the hulk lay bobbing astern of the trim and trig government craft, “but I guess it’s all in the line of duty. So come on board.”

Harry and Ben were in the skiff alongside the Betsy Jane when this offer was made.

Without hesitation Harry stepped upon the companionway. He turned to Ben, and was about to bid that veteran adventurer good-by, with a promise to visit Barren Island in the near future, when, to his astonishment, Ben calmly hitched his skiff alongside the motor boat and stepped up after him.

“I reckon I’ve had about enough of that island,” he said; “I’m a-goin’ to ship with you on this cruise if it’s agreeable.”

“Agreeable?” laughed Harry. “Why, Ben, you are as welcome as the flowers in May. But haven’t you left a lot of stuff behind on the island?”

“Nothing that ’ull hurt. The only other suit I own you’ve got on, and funny enough you look in it, too,” and Ben chuckled; “as for the hut and what grub’s left, and so forth, any one’s welcome to ’em that takes a fancy to ’em. I’ve got a bit left in the bank yet, and I guess I can afford a new outfit anyway, so heave ahead, Mister Skipper, as soon as you’re ready.”

The officer, who had watched this scene in some astonishment, broke into a laugh.

“I see you are an individual of impulse,” he said, “but if you want to go along it will spare my sending a man on board the schooner to help our young friend.”

“Waal, then, it’s an arrangement that’s agreeable to all parties,” rejoined Ben, lighting his pipe; “so that’s all settled.”

A short time later the Seneca moved ahead, at first slowly, and then faster, while the wandering Betsy Jane followed docilely after her through the now calm sea. True to Lieut. MacAllister’s promise, they were off Brig Island by sunset. As deep water extended close inshore, the derelict destroyer was enabled to tow the hulk almost up to the boys’ “front door,” so to speak, and from the beach a little group set up a loud cheer as the Betsy Jane’s spare anchor rattled down and she swung at rest.

The presence of the little party to witness the arrival is due to the fact that Lieut. MacAllister, who knew from Harry that there was a wireless on the island, had kept his operator busy sending “bulletins” to Dr. Perkins all the way down the coast; and so, when first the Seneca’s smoke streaked the horizon, all was ready to give the returned wanderer a big reception.

The Betsy Jane, having been safely anchored, the Seneca, with three toots of her siren, departed on her way, while Harry and Ben lost no time in tumbling into the skiff and rowing ashore. To describe what took place then would take up a lot of space without giving any clearer picture of the reunion that each of you can imagine for himself.

Readers of the former volumes of this series know how highly the Boy Aviators regarded Ben Stubbs, and after a short conversation with him Dr. Perkins came to share their good opinion of the rugged old adventurer. It would be impossible to tell with accuracy how many times that night Harry’s story was told, and how many times Frank and the others repeated the tale of their anxious hours while he was missing. The first wireless flash from the Seneca, Frank described as “the best thing that ever happened.” This opinion the others heartily echoed.

“Well,” said Dr. Perkins, as at last they made ready to “turn in,” “all is well that ends well, and to-morrow I have an announcement of some interest to make to you lads. From my inspection of the work done so far on the ‘Sea Eagle,’ as I have decided to christen her, I think that within a few days we can take her on her trial trip.”

“Anchors and aëroplanes!” shouted Pudge, in high glee, “I book passage right now!”

“And I – and I – and I,” came from the others, while Ben Stubbs inquired plaintively if there would be room for him.

CHAPTER IX. – THE FLIGHT OF THE “SEA EAGLE.”

Having already given a brief description of Dr. Perkins’ Sea Eagle, it would be wearisome to dwell in detail on all that was done during the next week to put that craft in shape for the final tests, upon which so much depended. It may be said here, though, that besides a visit paid to Motthaven in an effort to secure the apprehension of the two Daniels, a search was prosecuted for the missing dinghy. Neither mission proved successful.

The Daniels, having discovered that Harry was on board the Betsy Jane after they cut that craft loose, had vanished from the little community. As for the dinghy, it was supposed that they had taken that small craft with them. At any rate, it was impossible to get any news of their whereabouts on shore. This may be attributed to a distinct prejudice felt by the fishing community against the dwellers on Brig Island. Your down-easter is inquisitive to a degree, and the secrecy under which operations on the island were carried on was felt as a distinct affront to the little town. So therefore, although the local authorities promised every co-operation in seeking out the Daniels and punishing them for their outrageous conduct, it may be doubted if the efforts went much further than the mere assurance.

But after all, in the rush of interesting work that was now on hand, the Daniels were almost forgotten. The Betsy Jane had been towed round into the nearer cove, where she could be constantly watched, and the motor boat was used in the operation, the officer of the derelict destroyer having fulfilled his promise to furnish the boys with a new spark plug for the engine in place of the one taken by the marauders.

The morning after Harry’s return to the island Dr. Perkins had laid down a systematic plan of action. Frank and Harry were assigned to aid him in giving the finishing touches to the Sea Eagle, while his son and Billy Barnes were set to work with axes to clear a sort of runway down to the beach. Both Billy and Pudge would much rather have had a hand in the mechanical part of the work, but they pluckily went ahead on their designated duty and stuck to it till a broad path had been cleared from the summit of the island to the margin of the beach.

When this “roadway” through the brush had been cleared, two lines of planking, firmly nailed to stout supports, were run down on each side of it, forming a sort of railway, similar to those from which vessels are launched.

It was down this runway that it was designed to introduce the Sea Eagle to her initial plunge. At last the day arrived when all was complete, and the Sea Eagle was pronounced fit for the test. During the night before this event not one of the boys got more than half his usual allowance of sleep. In fact, it is doubtful if Dr. Perkins enjoyed much more repose.

By earliest dawn they were out, to find every promise of a glorious day. Breakfast that morning was a hasty apology for a meal, and hardly had it been gulped down before all hands were in the Sea Eagle’s shed. As has been said, the boat-like underbody of the craft had been mounted on a wheeled frame before it was assembled. All that had to be done then to get everything in readiness for the final test was to make fast a block and tackle to a stoutly rooted tree, and then wheel the Sea Eagle to the top of the inclined runway.

When the odd-looking craft was safely poised on the top of the rails the loose end of the tackle was made fast to the stern of the substructure, and Billy, Pudge and Harry were delegated to “belay” the rope as required. Frank and Dr. Perkins seated themselves in the “boat,” and at the words “Let her go!” the Sea Eagle in her wheeled frame began her descent down the runway. By means of the tackle the three boys at the summit of the incline easily controlled the novel craft’s descent, stopping from time to time while Dr. Perkins and Frank made a survey to see that all was going well.

“Bunting and buttercakes!” grumbled Pudge, as the boys alternately “let go” and “hauled in” on the tackle, “I thought a launching was more of a gala event than this.”

“I guess the doctor is too anxious to test out the Sea Eagle to bother with the trimmings,” laughed Harry; “it’s results that he’s after.”

As a matter of fact, the launching of the Sea Eagle was a very mild affair compared with what might have been expected. Had the villagers ashore known of it, doubtless a small fleet of boats would have been lying off the cove to witness it, but it was for that very reason that the deepest secrecy had been observed, and that the early hour had been chosen. As Dr. Perkins said, he “didn’t want any fuss and feathers” made over what was merely, after all, an experiment.

The rolling glide down the runway was made without incident, and at last the bow of the Sea Eagle’s “hull” struck the water. A cheer went up then that, rang shrill and clear out over the calm sea. Even Dr. Perkins joined in the enthusiasm, as well he might, for the goal of his ambition was in sight at last.

The Sea Eagle had been sent on her initial voyage without the aëroplane wings or the auxiliary lifting bags being attached. It was desired, first of all, to try out her qualities as a water skimmer. As soon as she was fairly afloat, the wheeled carriage on which the descent had been made was drawn ashore. Having been weighted before the start was made, it of course sank under the Sea Eagle when the sea and air craft floated, thus allowing it to be reclaimed with ease.

“Looks like a butterfly with its wings clipped off,” commented Billy Barnes as, with the others, he hastened to the beach as soon as their task was over.

Indeed, the odd-shaped hull, with its naked frame and two gaunt aërial propellers, did look strangely incomplete. But the boys knew that the wings were all ready for instant attachment. In fact, it was one of the features of the Sea Eagle that the craft was capable of being taken to pieces and put together again with very little loss of time or labor.

As the hydroplane portion of the Sea Eagle floated clear of the weighted frame in which it had made its journey to the beach, Frank looked inquiringly at the inventor. His hand was on the self-starting device which put the powerful motor in operation. Dr. Perkins was actually pale, and Frank could see that his strong hand shook perceptibly as he nodded his head.

But he mastered his nervousness quickly, and, grasping the steering-wheel in a firm grip, he spoke:

“You can start up now,” he said.

Frank turned the starting handle, admitting a charge of gas to the cylinders. Then he pressed a button and instantly the motor responded with a roar and a series of explosions, like those of a battery of gatling guns going into action. Having started it he admitted gasolene, and adjusted the carburetor till the cylinders were all working steadily.

Close to Dr. Perkins’ hand was a lever. This, when moved, “threw in” the clutch connecting the motor with the driving mechanism. Directly Frank had finished tuning up the motor Dr. Perkins’ hand reached for the lever. He jerked it nervously back. There was a whirr and a buzz, as the chains whirled the twin propellers round, and at the same instant the Sea Eagle darted forward like an arrow from a bow.

Faster and faster she went, getting up speed with seemingly marvelous rapidity. But instead of driving deeper into the water, under the pressure of the aërial propellers which rushed her forward through the atmosphere, the faster the Sea Eagle was driven the more lightly did the craft skim the surface of the water, till at top speed – 2,000 revolutions a minute – her bottom barely touched the water. This was owing to the peculiar construction of the hull, which was designed so as to “plane” the water in exactly the manner it did.

Cheer after cheer broke from the lads on shore as they saw the swift craft dart off, slicing the tops of the small waves like a cream skimmer. Dr. Perkins circumnavigated the island three times before he gave the signal to Frank to slow down. Then, releasing the clutch, the inventor allowed the Sea Eagle to come to rest, with its bow almost touching the beach.

“Now we will have a weight test,” he announced; “come on, boys.”

The lads ashore surely needed no second invitation. Without bothering to remove shoes or stockings they waded into the water and out to the Sea Eagle’s side. In less time than it takes to tell it they were swarming over the side of the cockpit and struggling for positions near the engine. But Dr. Perkins made them arrange themselves so that their weight would be evenly distributed. Ben Stubbs and Harry sat in the extreme stern, while Pudge and Billy occupied opposite seats amidships.

This done, off darted the Sea Eagle once more, and speedily set at rest all doubts as to her capability to “plane,” or skim the water, under an added load.

“It’s like riding on a floating island over a sea of raspberry ice cream soda,” declared Billy, when he was asked later to describe his sensations.

But a severer test awaited the Sea Eagle, namely, the trying out of her capacity actually to rise into the air. The craft was run partially ashore, and the great wings bolted in place and the stay wires adjusted. The stay wires were tightened by turn buckles till they were taut as fiddle strings, assuring stability of the wings. But in addition the wings were, of course, partially supported on the light but strong skeleton framework before noticed.

Much to the disappointment of the others, only Frank and Harry Chester and Dr. Perkins were to participate in the flying trials. But they took it all in good part, being promised rides later if the tests were successful. As before, the Sea Eagle, after she had been backed off and the propellers started, skimmed along the top of the water like a flying fish. But all at once the watchers on shore saw her rise bodily from the water and soar upward into the air. Higher and higher went the craft, gliding like a gull through the ether. It was an inspiring sight, and a perfect tornado of yells broke from Ben Stubbs, Billy and Pudge. But those on board the Sea Eagle could not hear the sounds of enthusiasm above the roaring of the motor.

Under Dr. Perkins’ skillful guidance the Sea Eagle climbed the aërial staircase till a height shown by the barograph to be almost 4,000 feet had been attained.

“Now to test the buoyancy apparatus,” cried the doctor suddenly. “Shut off power, Frank.”

Frank, who knew what was coming, obeyed the order and turned a valve admitting the pure hydrogen gas from one of the cylinders into the buoyancy devices. Instantly the upper wings swelled, till they resembled puffed-out mattresses more than anything else, and the “volplaning” downward movement was perceptibly checked. But, setting the descending device, Dr. Perkins headed the Sea Eagle for the water, and, skillfully manipulating the craft, landed it as lightly as a drifting feather on the water by the hull of the Betsy Jane.

Now came a further trial of the capabilities of the wonderful new craft which, so far, had proven such a success. Dr. Perkins set the planes in a rising position and allowed the Sea Eagle to hover above the Betsy Jane, like the bird for which the aërial craft had been named. Then suddenly he began a rapid descent, landing finally on the very summit of the inclined runway before mentioned. The sides of the Sea Eagle were equipped with large metal hooks, which were hastily thrown out by the boys and attached to four “eyes” arranged to receive them.

When this had been done the suction pump was set to work, and the inflated wings emptied of the gas, which was forced back into its receiver, and the valve closed. It was calculated that less than two per cent of the gas was lost during the process. The Sea Eagle was now once more a simple hydroplane, without any buoyancy device.

At a word from Dr. Perkins the hooks which had held the machine in place were disengaged, and instantly the craft began to glide down the runway. Half way down the engine was started, and when the graceful craft reached the abrupt end of the incline, the Sea Eagle went soaring off into space like a huge white-winged bird. This test was regarded by Dr. Perkins as the most important, for it proved the entire practicability of launching the Sea Eagle from a ship far out on the ocean.

After circling in the air a few times the tests were concluded by a rapid drop toward the earth right above the summit of the island. Just as it seemed as if the new craft must end her career by being dashed to bits against the construction shed, a skillful twist of the steering device sent her soaring upward once more. Two more swinging aërial loops were described, and then, with hardly a jar or vibration, the Sea Eagle was brought to rest by her inventor, almost in front of the shed where she had been assembled.

As the thrilling and wonderful trip was concluded, the boys came pressing about Dr. Perkins, showering congratulations and good wishes.

“Why, one could fly across the ocean in such a craft,” declared Frank enthusiastically.

The others laughed, but, to their astonishment, Dr. Perkins looked perfectly serious.

“I have a long trip in view,” he said, “a flight that will test every wire and bolt in the Sea Eagle’s construction. I did not announce this before for I wished first to see if everything worked satisfactorily.”

“No doubt about that,” said Billy Barnes with enthusiasm. He had been dodging about the great flying machine, taking photos from every possible angle.

“No,” admitted Dr. Perkins; “I must say that so far the Sea Eagle is all that I could desire. But the final test will put that beyond the shadow of a doubt. Do you boys wish to undertake a long trip?”

“Cookies and cucumbers! Do we!” roared Pudge, as the others pressed eagerly about to hear the unveiling of the doctor’s plan.