The bush that had moved against the wind had ceased stirring long since, but now he saw another shaking and it, too, paid no attention to the laws of nature, defying the wind as the first had done. Robert concentrated his gaze upon it, thankful that he had not made the black bear the original cause of things, and presently he saw the feathered head of an Indian appear among the leaves. It was only a glimpse, he did not see the body or even the face of the warrior, but it was enough. Where one warrior was another was likely to be in those northern marches, the most dangerous kind of neutral ground. He began to slide away, keeping the big tree trunk between him and the thicket, using all the arts of the forest trailer that he had learned by natural aptitude and long practice. He went back slowly, but the grass stems moved only a little as he went, and he was confident that he not only had not been seen, but would not be seen. Yet he scarcely dared to breathe--until he reached the bushes inclosing the opening in which his comrades lay. He paused a few moments before waking the others and filled his lungs with air. He was surprised to find that the hands holding his rifle were damp with perspiration, and he realized then how great the brief strain had been. Suppose he had not seen the Indian in the bush, and had been ambushed while on his scouting round! Or suppose he had stayed with his comrades and had been ambushed there! But neither had happened, and, taking Willet by the shoulder, he shook him, at the same time whispering in his ear to make no noise. The hunter, his trained faculties at once awake and on guard, sat up quietly, and Tayoga, who seemed to awake instinctively at the same time, also, sat up. "What is it, Robert?" whispered Willet. "An Indian in the bush about two hundred yards away," replied the youth. "I merely saw his hair and the feather in it, but it's safe to assume that he's not the only one." "That is so," said Tayoga. "A warrior does not come here alone." "It can't be the band we beat off when we were in the hollow," said Willet confidently. "They must be far south of us, even if they haven't given up the chase." "It is so, Great Bear," said Tayoga. "Was the warrior's head bare, Lennox, or did he have the headdress, gustoweh, like mine?" "I think," replied Robert, "that the feather projected something like yours, perhaps from a cross-splint." "Could you tell from what bird the feather came?" "Yes, I saw that much. It was the plume of an eagle." Tayoga mused a moment or two. Then he put two fingers to his mouth and blew between them a mellow, peculiar whistle, much like the notes of a deep-throated forest bird. He waited half a minute and a reply exactly similar came.