"But we're getting a good way out from sh.o.r.e," objected Hiram, who, however much at home he was at the key of a wireless apparatus, had no great relish for blue water in a small motor boat.

"Don't you worry, sonny," put in Merritt patronizingly. "We'll be all right. My, that was a plunge!"

As he spoke the bow of the Flying Fish dipped till she shipped a few gallons of green water.

"I'll pay out some more line," said the unperturbed Tubby. "I guess whatever we're onto begins to believe that he has swallowed something pretty indigestible."

Faster and faster the Flying Fish began to cut through the sea. The water sprayed out from both sides of her cut.w.a.ter in a steady stream.

"She's doing as well as she did the day of the race," said Merritt, with a laugh, gazing at Hiram's rather pale face. The wireless youth was casting longing glances at the sh.o.r.e.

"Well, I wish Mr. Whale, or whatever he is, would come up and let us have a look at him!" exclaimed Tubby suddenly. "This is getting pretty monotonous."

As he spoke the boy paid nut a little more line. He had only just time to belay it round the cleat to avoid its being jerked out of his hand, so fast was the creature they had hooked now traveling.

"Say, Tubby," spoke Merritt at length, "I'm beginning to think myself that it might not be a bad idea to put back. Those clouds over there on the horizon look as if they meant trouble."

"Oh, let's keep it on a little while longer pleaded Tubby; cutting through the water like this, without any expenditure of gasoline or power, is the real luxurious way of ocean traveling. It beats the Mauretania. Just think if liners could hitch a whole team of things like whatever has got hold of us to their bows! Why, the Atlantic would be crossed in four days."

For some time longer the boat shot along over the waves, towed by its invisible force. The boys, with the exception of Tubby, began to get anxious. The sh.o.r.es of the mainland were dim in the distance behind them, and Topsail Island itself only showed as a dark blue dot.

Suddenly the motion ceased.

"He's free of the line!" shouted Hiram, inwardly much relieved to think they had got rid of what to him was an alarming situation.

"No, he's not," replied Tubby, bending over the line. "He's still fast to us. The line's as tight as a fiddle string."

He was standing up as he spoke, and as the Flying Fish gave a sudden, crazy jerk forward, he was almost thrown overboard. In fact, he would have toppled into the sea if Merritt had not bounded forward and grabbed the fleshy lad just as he was losing his balance.

"We're off again!" exclaimed Hiram, as the Flying Fish once more began to move through the water.

But now the creature that had seized Tubby's big hook started to move in circles. Round and round the Flying Fish was towed in dizzy swings that made the heads of her young occupants swim.

"Start the engine on the reverse, and see if that will do any good,"

said Tubby, bending anxiously over his line.

Merritt brought the reverse gear to "neutral," and then started it up, gradually bringing back the lever governing the reversing wheel till the Flying Fish was going second speed astern, and finally at her full gait backward.

The tug thus exercised seemed to have no effect on the monster that had caught Tubby's bait, however. With the exception that the speed was diminished a trifle, the Flying Fish was still powerless to shake off her opponent.

Suddenly, and without the slightest warning, a huge, shiny, wet body shot out of the water almost directly in front of the amazed and startled boys, and settled back with a mighty splash that sent the spray flying in a salt-water shower bath over their heads.

"Whatever was it?" gasped Hiram in awed tones.

"A shark," replied Merritt, "and a whopper, too. What are we going to do, Tubby--keep on or cut loose?"

"Just a little longer," pleaded the other. "He must be tiring by this time. If we can only wear him out, we can tow him ash.o.r.e and make a little money out of him. You know shark skin is valuable."

"I'd rather have a whole skin of my own," quavered Hiram, who had been considerably alarmed by the momentary glimpse he had had of Tubby's quarry.

"He's off again!" shouted Merritt, as the sea tiger started straight ahead once more.

Suddenly the line slackened again.

"Look out!" Tubby had just time to shriek the warning before a mighty shock threw them all off their feet in a heap on the bottom of the boat.

"Zan-g-g-g!"

The line tw.a.n.ged and snapped under the sudden strain, and a great rush seaward showed the boys, as soon as they recovered their senses, that they had lost their shark.

"And a good line," moaned Tubby.

"What are you kicking about?" demanded Merritt. "It's a lucky thing the beast didn't start some plank of the boat when it charged; but as far as I can see, the Flying Fish stood the shock all right."

"It felt like an earthquake," murmured Hiram, whose face was white and eyes frightened.

"Well, I suppose we'd better head for home," said Tubby at length.

"Those bluefish will go fine for supper."

"Spoken like a Tubby," laughed Merritt. "All right, I'll start up.

Hullo--" he looked up with a puzzled face from the reverse lever. "I can't get her on the forward speed."

"What's the matter?" gasped Hiram.

"I don't know. Something's stuck. Shut off that engine, will you, Tubby, while I see?"

Tubby promptly shut down the motor, and Merritt struggled with the refractory lever. It was all in vain, however; he could not get it on the forward speed.

"I've got to investigate," puffed the perspiring corporal; "something must be wrong with the reversible propeller."

"Well, whatever you are going to do, hurry up about it," spoke Tubby, with unwonted sharpness in his tones.

"Why, what's the--" began Merritt.

Tubby checked him with a finger on his lips.

"Don't scare the kid," he whispered, leaning forward, "but we're in for a storm."

He pointed seaward.

Rolling toward them was a spreading wall of heavy clouds traveling at seemingly great speed, while below the wrack the water darkened ominously and became flecked with "white horses."

CHAPTER XVI

LOST IN THE STORM