The sun set lower upon the savage scene, casting a dark glow over the ruined forts, the troops, the leaping savages and the huddled prisoners. One of the Indians danced and bounded more wildly than all the rest. He was tall, but slim, apparently youthful, and he wore nothing except breech cloth, leggings and moccasins, his naked body a miracle of savage painting. Robert by and by watched him alone, fascinated by his extraordinary agility and untiring enthusiasm. His figure seemed to shoot up in the air on springs, and, with a glittering tomahawk, he slew and scalped an imaginary foe over and over again, and every time the blade struck in the air he let forth a shout that would have done credit to old Stentor himself. He ranged up and down the beach, and presently, when he was close to Robert, he grew more violent than ever, as if he were worked by some powerful mechanism that would not let him rest. He had all the appearance of one who had gone quite mad, and as he bounded near them, his tomahawk circling about his head, the French guards shrank back, awed, and, at the same time, not wishing to have any conflict with their red allies, who must be handled with the greatest care. The man paused a moment before the young prisoner, whirled his tomahawk about his head and uttered a ferocious shout. Robert looked straight into the burning eyes, started violently and then became outwardly calm, though every nerve and muscle in him was keyed to the utmost tension. "To the lake!" exclaimed the Indian under his breath and then he danced toward the water. Robert did not know at first what the words meant, and he waited in indecision, but he saw that the care of the guards, owing to the confusion, the fact that the battle was over, and the rejoicing for victory, was relaxed. It would seem, too, that escape at such a time and place was impossible, and that circumstance increased their inattention. The youth watched the dancing warrior, who was now moving toward the water, over which the darkness of night had spread. But the lake was groaning with a wind from the north, and several canoes near the beach were bobbing up and down. The dancer paused a moment at the very edge of the water, and looked back at Robert. Then he advanced into the waves themselves. All the young prisoner's indecision departed in a flash. The signal was complete and he understood. He sprang violently against the French soldier who stood nearest him and knocked him to the ground. Then with three or four bounds he was at the water's edge, leaping into the canoe, just as Tayoga settled himself into place there, and, seizing a paddle, pushed away with powerful shoves.