Grenville descended from his perch at last, when the palms and ferns had darkly emerged from the velvety blackness of the thicket. He took up his club, left the bomb in its place, and, searching about, recovered the sheet of parchment dropped in the darkness. Aware that the silently moving enemy might still be lurking by the pathway, he made his way no less boldly from the shadows, and came duly to the hill. His chagrin was complete when he told Elaine that his night had been spent in vain. She had scarcely slept, as he could see, for her face was still pale with worry, while her eyes showed her lack of rest. "I shall try again to-night," he said, but from that he was dissuaded. The strain was too great upon Elaine, if not upon himself. He presently promised to wait a day, and see what might develop. He could not subject his companion to another such session of agonizing worry as Elaine had undergone until he felt more certain of results. But to wait a day in idleness, while he felt that every hour that passed might bring new dangers upon them, could scarcely accord with his intentions. He declared the tiger an arrant coward, who dared not confront him in the day. "We have faced far greater perils than this," he told her, as they ate their simple breakfast, "and we may be called upon to face the like again. We're enormously fortunate to have nothing more than this striped beast to limit our freedom on the island." Elaine could have thought of countless other animals, including snakes, that would amply curtail her roaming inclinations, but she was not in the least in the habit of rehearsing her many dreads. Grenville went promptly to work, after breakfast, fetching clay in the basket from the pit. It was not brought up to the terrace, but dumped in a heap beside the hollow tree, in the burned space under the walls. This tree, he at last explained to Elaine, he intended to use as a smelter. "It's a natural chimney I've annexed," was the way he presented the problem. "If I built a fire in it now, however, it would burn, and be destroyed. I intend to line it with clay--plaster it on, inside, some eight or ten feet high. Then when this fire-resisting substance dries, I can smelt my metal and run it in the molds. The draught will make a prodigious heat--far more than brass requires." "I see," said Elaine. "Meantime I am utterly idle." "I'll cut you those needles. You can knit," he said, "unless you prefer to go fishing." He had come to the camp for one of the jugs in which to carry water for the clay. This task was temporarily abandoned while he sat in the shade, beside Elaine, and carved out the promised tools. These were made of wood, instead of bone, since the latter material was far too hard for his fragment of a blade, and one of the woods provided by the jungle was so straightly grained and elastic, that even a slender splinter would bend like steel before it broke.