The reptile was found to be quite dead, and little wonder, after all the spears that had entered his coils. As near as they could judge, he was between thirty and forty feet long, with a body as thick as a small keg. The skin was repulsive and slimy, of a dirty green color. "It's a regular sea-serpent," said Melton. "What a sensation a monster of this kind would make if he were put on exhibition at the Zoo." "And the other one was fully as large," added Guy. "That makes no less than four we have already encountered. There must be a great many in the river and lake." One glimpse of the creature sickened Sir Arthur. He turned away and sat down on the edge of the raft. Up to this moment the excitement had banished all else from their minds. They had fought a desperate fight for life and conquered. At the very flush of their success the shadow of certain death returned, blacker and more forbidding than ever, and in a moment their triumphant feelings were changed to deepest melancholy. A short time before, under the influence of the colonel's philosophical words, they had felt in some manner resigned to a fate that nothing could avert. Now it was ten times more horrible and loathsome to contemplate, ten times harder to realize. Absurd as it seemed, fresh hope sprang up in their hearts, and they tried to reason themselves into the belief that some unlooked-for chance of escape would offer itself yet. Even the colonel's mood had changed, and it was easy to see that he was struggling with some terrible emotion. The desire for life that was strong within him suggested to Guy a new plan; nothing, indeed, that offered any hope of escape, but merely a solution to his curiosity. He remembered that on each occasion when their canoe had been caught by the influx of the river it had been carried direct to this island, a fact which seemed to prove the existence of a sluggish current through the center of the lake. Did this current continue on past the island, and if so, whither did it lead? A solution to these two problems Guy was curious to obtain. It served to occupy his mind, to keep his thoughts from dwelling on the horrible fate that was in store for him. It was more than likely, he told himself, that whirlpools would be found in the center of the lake. Well, drowning would be an easy death compared to the lingering tortures of starvation. CHAPTER XXX. A STRANGE DISCOVERY. Guy's explanation of his intentions was received without comment. Presently the colonel said, "You forget that we no longer have a canoe, Chutney. We are prisoners on this island." "But we have a raft," replied Guy, "and a good one, too. It would be much more convenient and comfortable to travel on." "Suppose we try it," said Forbes. "Anything to get away from this place." "We can't get into a worse hole, that's true," added the colonel. "I believe you are right about the current, Chutney, though it can only land us on the edge of some whirlpool."