"This is not the only tree uprooted by the wind and afloat on the lake," said Tayoga, "and now it must be our purpose to make the warriors think it has come into the water naturally." Long before the French word "camouflage" was brought into general use by a titanic war the art of concealment and illusion was practiced universally by the natives of the North American wilderness. It was in truth their favorite stratagem in their unending wars, and there was high praise for those who could use it best. "Well spoken, Tayoga," said Willet. "Luckily these living branches hide us, and, as the wind still blows strongly toward the south, we must let the tree float in that direction." "And not go toward the mainland!" said Robert. "Aye, lad, for the present. It's stern necessity. If the warriors in that canoe saw the tree floating against the wind they'd know we're here. Trust 'em for that. I think we're about to run another gauntlet." The trunk now drifted with the wind, though the three edged it ever so slightly, but steadily, toward the shore. Meanwhile the canoe grew and grew, and they saw, as Willet had surmised, that it contained four paddles. It was evident too that they were on a quest, as the boat began to veer about, and the four Indians swept the lake with eager eyes. The tree drifted on. Farther to the west and near the shore, another tree was floating in the same manner, and off to the east a third was beckoning in like fashion. There was nothing in the behavior of the three trees to indicate that one of them was different from the other two. The eyes of the savages passed over them, one after another, but they saw no human being hidden within their boughs. Yet Robert at least, when those four pairs of eyes rested on his tree, felt them burning into his back. It was a positive relief, when they moved on and began to hunt elsewhere. "They will yet bring their canoe much closer," whispered Willet. "It's too much to expect that they will let us go so easily, and we've got to keep up the illusion quite a while longer. Don't push on the tree. The wind is dying a little, and our pace must be absolutely the pace of the breeze. They notice everything and if we were to go too fast they'd be sure to see it." They no longer sought to control their floating support, and, as the wind suddenly sank very much, it hung lazily on the crests of little waves.