It was when he dropped down that the spasmodic jerks on the line were given. The sea monster had included the line in his coil, and it drew as the boy bent lower.
The air-hose seemed to be clear, but Jimmie was afraid that the flounderings of the serpent might break it. The horror was certain to do some thrashing about when he felt the keen edge of the steel.
The only way was to strike some vital spot. That would end the combat at once. The serpent"s head lowered with the boy, as if he had great curiosity to find out exactly what sort of a being it was that had invaded his kingdom.
The boy was cheered by the thought that the submarine had stopped, although he did not realize at the time that the signal had been given by the action of his enemy. If the boat had continued on her course, the air-hose and the lifting line must both have been broken in a short time, as the boy"s progress was stopped by the great weight of his terrifying foe. Then the end would have come instantly.
The coil about the leg was drawing tighter now, and the boy was in considerable pain. Also the coils were ascending as the head of the sea monster swung around.
It was not only the pain and the deadly danger that brought a momentary shiver to the boy. It was the fact that the repulsive body of the serpent was winding closer and closer about him.
He seemed to feel the slimy skin of the deep sea terror slipping through his waterproof suit, although his common sense told him that such could not be the case. He even thought he scented the sickening odor which he had now and then experienced in the Central Park Zoo. He knew, too, that this was purely imaginary, but the horror of a nightmare was on him, and for only an instant he lost his nerve.
Once more the head swung around and the boy presented his weapon and struck with all his might. The needle-like point entered the throat of the serpent and pa.s.sed through just at the back of the long, spotted head.
There was a great switching in the water for an instant, and then the coils loosened. The blow, as Jimmie afterwards discovered, had broken the spinal cord.
While not yet dead, the serpent was incapable of moving the lower part of his body. With a sense of loathing he pulled at the coils until he was clear of them.
The water where he stood was now taking on a faint reddish hue, and Jimmie hastened away. At first, weakened and shaken as he was by the disgusting encounter, he determined to return to the submarine, then the thought of what his chums would say to him if he gave up caused him to proceed in the direction of the Shark.
He moved over the level bottom, looking for lines which would indicate that the Shark people were out watching the movements of their rival, but found none. When he came to the end of his line he signaled for the submarine to go ahead.
In this manner, by slow degrees, and always keeping his eyes out for creatures similar to the one he had vanquished, he advanced until he saw the bulk of the Shark only a short distance away. Then he called for a stop.
He remained there some moments, watching the Shark lift to the surface. Then a dark object pa.s.sed sh.o.r.eward, and the boy was certain that a boat had been sent to the little wharf.
"I guess that will be about all," he thought. "I"ve secured the information Ned wants, and may as well go back."
To tell the truth, he was delighted at the thought of getting out of the water again. His encounter with the serpent had considerably lessened his enthusiasm for deep-sea work.
The Sea Lion dropped down when Jimmie gave the signal, and he was soon in the water chamber, where he found Frank in sea dress. The two were out of the water in a short time, with the chamber empty again.
"What did you do that for?" asked Jimmie, as soon as the helmets were removed.
"Do what?" asked Frank, with a smile.
"Drop down and wait for me in the water chamber."
"Did you notice the color of the water?" asked Frank.
"Yes, down there, but up here--say," he added, "the blood of that champion sea serpent never got to the surface, did it?"
"Just enough of it to cause me to think a shark was making a meal down there," replied Frank.
Jimmie told the story of the encounter, laughing at the peril which was past, but Frank looked grave.
"We"ll have to be more careful how we wander about on the bottom of the sea," he said. "It was just luck that brought you out alive. You might wound a serpent a hundred times with that steel bar and never again strike a vital spot."
"Then," Jimmie laughed, "when we get back to New York you put in a claim for a Carnegie medal for me! It would look fine on the front of me hat." "I"ll have Ned make you a medal out of a fish"s fin," laughed Frank.
"All right!" cried Jimmie. "It will be all right, just so it is a medal."
Then Jimmie told of what he had seen in the vicinity of the Shark, and Frank complimented him on his courage and good judgment in keeping down until he had secured the desired information.
"We know now," he said, "that the Shark people are communicating with the sh.o.r.e. Perhaps Ned and Jack will learn just what they are doing there. If they do, we shall know just what course to pursue."
"What"s the answer?" asked the little fellow.
"Why, if the Shark people dispose of the doc.u.ments--if there were any doc.u.ments in the plunder--we"ll have to chase after the men who take them. The gold doesn"t count."
"Yes," laughed Jimmie, "and I suppose we"ll leave the Sea Lion and go over the mountains in an open boat! I"m goin" to stick to the little old Sea Lion."
"Well," Frank remarked, after a short wait, "we must get back to the spot where Ned left us."
"Never thought of that!" Jimmie cried. "He may be yelling his head off because he can"t come on board."
The boys lost no time in getting back to the first position, and then lifted to the surface. The conning tower, as before, was out of sight of anyone on the bay, the point of land intervening.
As the time pa.s.sed the boys became anxious about Ned and Jack. They might have returned while the Sea Lion was away, they thought, and gone into the interior thinking that some accident had happened to the submarine.
"Anyway," Jimmie declared, "Ned told us to move along as my line gave out, and he must know that we"d come back to pick him up."
While the lads speculated on the possible outcome of the visit to the sh.o.r.e there came a sharp collision which keeled the Sea Lion over to port. Both were active in an instant.
"That"s the Shark!" exclaimed Jimmie.
"It must be," Frank agreed.
Jimmie hastened to the stern and looked out of the plate gla.s.s panel there.
"What do you see?" asked Frank, nervously.
"It is the Shark, all right," was the reply, "and she is backing off.
She may be going to ram us."
"Then it"s us for the bottom," cried Frank.
"Why the bottom?" asked Jimmie.
Frank did not answer for a moment. He was still standing back of the little fellow and looking over his shoulder, out of the gla.s.s panel.
"Because," he said, "the Shark takes chances in b.u.mping us at a considerable depth. She is higher than we are, and her prow sits a great deal above our vulnerable parts. If she strikes us when we are nestling on the bottom, her blow will glance off."
"If she knows it, then," Jimmie said, "she won"t follow us down. What will she do?"
"Chase herself off."
"I hope so!" cried Jimmie.