For a time he wondered if he might not be more wise to pass entirely around the island, to approach the pool of fresh water from below. But reflecting that various currents of the tide would buffet and beset him, in addition to which he must run the gauntlet past the Dyak boats, he surrendered the suggestion without delay, and impatiently awaited the tide. Three times he went down the passage, torch in hand, to examine the stages of the water. At length he bethought him of two short scoop-like paddles, to assist in propelling his craft, and feverishly set about their construction. They were done in less than half an hour, since they consisted merely of two half-sections of bamboo cylinder, lashed to a pair of handles. Elaine was aware he was making ready for more than an ordinary adventure, as she watched him with her wide and lustrous eyes. "Perhaps relief may come to-morrow," she finally observed. "You are quite exhausted. Might you not be wiser to rest to-night? We can get along, I am sure." But even her voice made a rasp in her throat, so distressed was her system for water. "I need a bit of change," he said. "It is certain to do me good." With a touch of his former brusqueness, he presently bade her seek her couch, during the time he expected to be gone, and vanished once more down the dark, steep passageway, with his paddles and torch in hand. The torch was left in the gallery, extinguished. The concealing door was adjusted to its place. These were mere precautions against the cave's discovery, yet Grenville was certain no Dyaks would approach the place that night. His two best jugs were placed on the ledge; his cleaver was hung at his belt. He could take no bombs or lighted brands on such an expedition. The task of launching his raft on the tide involved unexpected labor. Its lightness made it an easy prey to the swirl that always filled the cavern's walled approach. It was sucked once nearly under, its farther end disappearing entirely from view--and Granville withdrew it, desperately glad the jugs had not been placed upon it. Awaiting a quieter mood of the whirlpool, half seen in the darkness, he launched the float again, and beheld it rest there, quietly, nosing against the ledge. He turned for the jugs, but, casting a quick glance backward, at the slightest of scraping sounds, saw the raft swinging outward from his reach. His arm was too short for its recovery. Leaping wildly out in the water, he caught it again, and was washed against the jagged wall before he once more returned it to the landing. He was soaked to the skin, but his pulses throbbed with heat and dogged energy that would think of no defeat. With his jugs finally laid flat between the bamboo supporters, front and rear, and with paddles in hand, as he lay at full length on the light but half-submerged platform, he rowed the raft out with a motion as if he were swimming.