An utter sinking of the heart assailed him. His moment of sleep, he told himself, could have been no more treacherous had it been planned by a scheming enemy to complete their abandonment to some rapidly impending fate. And yet had he waked in the gray of the dawn, with his bombs and fuses still too damp for employment, and his cannon planted only to guard the trail, the boat could hardly have been saved. At most, his protest would merely have betrayed the fact he was camped there on the terrace. A new line of thought sprang into his brain, as one suggestion after another was swiftly deduced from his loss. The natives who had landed and carried off his precious craft must certainly have found the wall with which he had barred the trail. He could hardly doubt they knew of his presence on the hill. They might even now be lying in wait to get him the moment he appeared. His preconceived theory, that they dared not land while those tidal sounds still haunted this end of the island, received a shattering blow. Their craft was doubtless hidden now behind either one of the other lofty walls comprised by the neighboring hills. The thieves had cut off all possible hope of his escape with Elaine by means of his solid, if crude, canoe, and could finally starve them on the hill, if they had no courage for a battle. Yet how had they happened on his boat and why had they removed it? That they must have carried it bodily down to the shore, through the jungle, was absolutely certain. And this, he thought, argued a half-dozen men, though it might have been done by four. He remained there, stunned by this utterly defeating discovery, watching the thicket for the slightest sign that might betray the presence of the enemy and revolving the proposition over and over in his mind. When at last he admitted that the natives might have known the log was lying there, if they had not indeed prepared it with fire for some of their uses the previous year, he was more than verging on the facts. They had felled it solely for a boat--and much of their work he had completed. This line of reasoning did not, however, serve to quiet further questions. The visitors must certainly have wondered how it came about that the log was so nearly hollowed. The clay, still plastered upon it, must have suggested to their minds the work of a craftsman minus tools. That the workman must be present on the island would be more than suspected, since his boat was not even launched. They might suppose the tiger had captured and devoured him--always admitting they knew of the brute's former presence on the place. It seemed far more likely to Grenville they had found his tracks about the spring, his gate on the trail, and the signs of his recent fires and general activity about the region of his smelter, and would therefore conclude he was still encamped on the hill.