He might get back to the cave by retracing his steps toward the ravine he had just left and find another route across the island, but this after a moment he rejected as being almost impossible.

He was not familiar with this part of the island and he knew that the damage done by the earthquake had made some sections of it impassable. It was getting near morning too, and it would never do to be found wandering about this part of the island after daybreak.

Someway he must get back to the cave and warn his unsuspecting comrades. Someway he must get across that swirling lagoon. Once on the other side, the rest would be simple. He had only to follow the shore to reach the cave.

But once more the problem confronted him. How to cross that narrow stretch of water. The water was probably swarming with sharks. He could not hope to get a third, no, not even a quarter, of the way across the death stretch without meeting a most horrible fate. And yet his comrades must be warned!

He gazed up at the stars as though seeking some help from them. But they looked down at him unblinkingly, far away, remote, cold. He could expect no help from them.

Although the night was breathlessly hot, Phil shivered. He stared at the narrow, menacing lagoon as though it fascinated him. He made a step toward it, then stopped as something wound and clung about his foot.

He stooped to disentangle himself and his groping fingers found themselves buried in wet seaweed. Suddenly, with the swiftness of inspiration, the idea came to him. It was a mad idea of course, utterly desperate, but then, his case was desperate.

There was plenty of that seaweed, great bunches of it, thrown up by the incoming tide. If he should bury himself in it, winding it about him so that he resembled a huge tangle of the stuff, might he not hope to fool the sharks? He could not fool them for long that was sure, but the lagoon was narrow. Their bewilderment might give him the chance to get across.

No sooner did Phil think of it than he began to put the idea into practice. He was feeling excited, almost elated. Now that he had a plan, no matter how dangerous, there was a great relief in being able to put it into practice.

He had no difficulty in gathering together all the sea weed needed for his purpose. Dexterously he wound it about his body, binding it about his waist with his belt and fastening it about his neck and arms and ankles with long strands of the grass itself.