Those who still watched, however, almost immediately saw a tremendous disturbance of the water just below the spot where Roger had disappeared; and presently a broad blotch of red stained the blue water of the inlet, while a deep groan went up from the assembled crowd on deck. But the groan quickly changed to a mighty cheer as they saw Roger's form appear again at some considerable distance nearer the ship, and evidently safe and sound, for he was still swimming strongly. And immediately after, in his rear, the body of the shark rose to the surface, floating on its back, dead! The remainder of the sharks instantly flung themselves upon the carcass, tearing it to pieces, and churning up a bloody froth as they struggled and tore and fought for their share of the spoil. Roger had done the only thing possible to save his life. As the shark dived, so did he, and, swimming below the brute, he had ripped up its belly with several strong slashing blows from his keen dagger, thus effectually ridding himself of one adversary, and trusting that the remainder of the school would wait to devour it--as indeed they had done,--thus giving him a further chance to escape. He was now quite near the ship; but the sharks had quickly disposed of the carcass of their companion, and were again after him. Roger, however, was now within range. So, as the sharks came on in pursuit, they were bombarded with every description of missile upon which the men could lay their hands, a proceeding which checked them slightly, and gave Roger a little more grace. At length, utterly exhausted, the plucky lad reached the foot of the accommodation ladder, but just in time, for, as he was pulled clear of the water, a pair of huge jaws clashed behind him with a sound that made him nearly faint, so suggestive was it of what he had so narrowly escaped. By the time that he reached the deck Harry had fully recovered, and he was the first to grasp Roger's hand and wring it convulsively as the latter stepped inboard. Harry could find no words wherewith to express his feelings adequately, but the pressure of his hand spoke for him, and Roger felt amply repaid for all he had done. "And now, young gentlemen," said Cavendish sternly, when the young hero of the adventure had been recovered somewhat by the administration of a liberal dose of rum, "let this be a warning to you never again to go bathing in these seas. You have both had a most miraculous escape, and I for one had given the pair of you up as lost. But, thank Heaven, you are safe after all. Only never let it occur again. But I suppose you will take care of that," he added with a twinkle in his eye. "Your first experience with Johnny Shark has been enough for you, hasn't it?" They reassured him on that point, and both then went below to dress. When they were again clothed, Harry said: