That the ladder would be watched he was certain. It was also more than likely, he was sure, the Dyaks would either cut through the strands to weaken it, near the top, or displace the rocks he had heaped upon its end. Reflecting that to pull it down while one of their craft was cruising about the headland might convince them he had fallen in the sea, he laid his platform out on the ledge for the purpose before the terrace had been deserted. But the boat was not to be seen. At noon the sun beat down on the rocks about the cave with a hot, intolerable glare. Grenville was weary, as well as thirsty once more, and faint from lack of food. He dared not abandon the cavern now, however, since any moment might find the Dyaks slipping to the open niche to complete the deed they had vainly attempted before. Never had the long, sultry hours of afternoon dragged by more tediously. Never had the man so vividly realized how much it meant to be near Elaine, to hear her voice, to gaze in the depths of her eyes. It was not till the sun was about to set that his long, impatient vigil was somewhat rewarded at last. The Dyak boat drifted barely in sight, as he crouched there on the shattered ledge. Without a moment's hesitation, even as he saw that the craft was beating back, as before, to the shelter behind the cliff, he ran out his platform, dropped its end across a rung of the ladder, and cast a heavy stone as far out upon it as possible. It hung there, solidly enough, for a moment, then slipped a foot--and abruptly the whole writhing length came down, to land in the whirlpool and sink. The platform, however, was recovered. Returning at once to his place behind the wall, Sidney waited in new expectancy for the Dyaks to appear. They did not come. The sun went down--and with it Grenville's hope. The head-hunters feared him still! They must have determined some trick was prepared against their invasion of the cave! He was utterly sick with discouragement. His long, hard day, to say nothing of Elaine's, had been spent like this, in vain. He felt he had merely lost ground. The Dyaks were doubtless already in possession of the terrace, where he could not attack them to advantage, since precisely as soon as he made his appearance on the hill-top the passage must be revealed. He clung to the hope that dusk would bring the murderous pack to his stand--that they might have waited for darkness to sneak upon him unawares. But the twilight faded into blackest night, with clouds obscuring the friendly stars, and still no head-hunters came. When at length he was certain no native would dare intrust himself or his boat to the treacherous maelstrom of the niche, he abandoned hope for the night. Returning to the passageway, he closed its door behind him, secured it with the bar, and groped his way upward through the velvet gloom for a word of cheer with Elaine.