Although the storm could not reach them it beat heavily for long hours while they slept. The sweep of the rain maintained a continuous driving sound. Boughs cracked and broke beneath it. The waters of the river, swollen by the floods of tributary creeks and brooks, rose fast, bearing upon their angry surface the wreckage of trees, but they did not reach the stone shelf upon which the travelers lay. Tayoga awoke before the morning, while it was yet so dark that his trained eyes could see but dimly the figures of his comrades. He sat up and listened, knowing that he must depend for warning upon his hearing, which had been trained to extreme acuteness by the needs of forest life. All three of them were great wilderness trailers and scouts, but Tayoga was the first of the three. Back of him lay untold generations that had been compelled to depend upon the physical senses and the intuition that comes from their uttermost development and co-ordination. Now, Tayoga, the product of all those who had gone before, was also their finest flower. He had listened at first, resting on his elbow, but after a minute or two he sat up. He heard the rushing of the rain, the crack of splintering boughs, the flowing of the rising river, and the gurgling of its waters as they lapped against the stone shelf. They would not enter it he knew, as he had observed that the highest marks of the floods lay below them. The sounds made by the rain and the river were steady and unchanged. But the intuition that came from the harmonious working of senses, developed to a marvelous degree, sounded a warning note. A danger threatened. He did not know what the danger was nor whence it would come, but the soul of the Onondaga was alive and every nerve and muscle in his body was attuned for any task that might lie before him. He looked at his sleeping comrades. They did not stir, and their long, regular breathing told him that no sinister threat was coming to them. But Tayoga never doubted. The silent and invisible warning, like a modern wireless current, reached him again. Now, he knelt at the very edge of the shelf, and drew his long hunting knife. He tried to pierce the darkness with his eyes, and always he looked up the stream in the direction in which they had come. He strained his ears too to the utmost, concentrating the full powers of his hearing upon the river, but the only sounds that reached him were the flowing of the current, the bubbling of the water at the edges, and its lapping against a tree or bush torn up by the storm and floating on the surface of the stream. The Onondaga stepped from the shelf, finding a place for his feet in crevices below, the water rising almost to his knees, and leaned farther forward to listen. One hand held firmly to a projection of stone above and the other clasped the knife.