Thandar and Roof had great difficulty in dragging it out again upon the beach. Roof now would have given up, but not so Thandar. It is true that he was slightly disheartened, for he had set great store upon the success of his little vessel. After they had carried the frail thing beyond high tide Thandar sat down upon the ground and for an hour he did naught but stare at the leaky craft. Then he arose and calling to Roof led him into the forest. For a mile they walked, and then Thandar halted before a tree from the side of which a thick and sticky stream was slowly oozing. Thandar had brought along a gourd, and now with a small branch he commenced transferring the mass from the side of the tree to the gourd. Roof helped him. In an hour the gourd was filled. Then they returned to the skiff. Leaving the gourd there Thandar and Roof walked to a clump of heavy jungle grasses not far from the cliff where their cave lay. Here Thandar gathered a great armful of the yellow, ripened grass, telling Roof to do likewise. This they took back to the skiff, where, by rolling it assiduously between their hands and pounding it with stones they reduced it to a mass of soft, tough fiber. Now Thandar showed Roof how to twist this fiber into a loose, fluffy rope, and when he had him well started he daubed the rope with the rubbery fluid he had filched from the tree, and with a sharp stick tucked it in every seam and crevice of the skiff. It took the better part of two days to accomplish this, and when it was done and the gourd empty, the two men returned to the tree and refilled it. This time they built a fire upon their return to the skiff, Roof spinning a hard wood splinter rapidly between toes and fingers in a little mass of tinder that lay in a hollowed piece of wood. Presently a thin spiral of smoke arose from the tinder, growing denser for a moment until of a sudden it broke into flame. The men piled twigs and branches upon the blaze until the fire was well started. Then Thandar taking a ball of the viscous matter from the gourd heated it in the flames, immediately daubing the melting mass upon the outside of the skiff. In this way, slowly and with infinite patience, the two at last succeeded in coating the entire outer surface of the canoe with a waterproof substance that might defy the action of water almost indefinitely. For three days Thandar let the coating dry, and then the craft was given another trial. The man's heart was in his throat as the canoe floated upon the crest of a great wave and he leaped into it. But a moment later he shouted in relief and delight--the thing floated like a cork, nor was there the slightest leak discernible. For half an hour Thandar paddled about the harbor, and then he returned for the sail. This too, though rather heavy and awkward, worked admirably, and the balance of the day he spent in sailing, even venturing out into the ocean.