There was not the rustle of a bough, not a word spoken, by the silent watchers in the spruce. Mukoki had slipped back and half lay across his support in shooting attitude. Wabi had braced a foot, and his rifle was half to his shoulder, leveled over a knee. It was Rod's turn with the big revolver, and he had practised aiming through a crotch that gave a rest to his arm.

In a few moments there came again the howl of the distant wolf on the plains, and this time it was joined by another away to the westward. And after that there came two from the plains instead of one, and then a far cry to the north and east. For the first time Rod and Wabi heard the gloating chuckle of Mukoki in his spruce a dozen feet away.

At the increasing responses of his brethren Wolf became more frantic in his efforts. The scent of fresh blood and of wounded game was becoming maddening to the captive. But his frenzy no longer betrayed itself in futile efforts to escape from the babeesh thong. Wolf knew that his cries were assembling the hunt-pack. Nearer and nearer came the responses of the leaders, and there were now only momentary rests between the deep-throated exhortations which he sent in all directions into the night.

Suddenly, almost from the swamp itself, there came a quick, excited, yelping reply, and Wabi gripped Rod by the arm.

"He has struck the place where you killed the buck," he whispered. "There'll be quick work now!"

Hardly had he spoken when a series of excited howls broke forth from the swamp, coming nearer and nearer as the hunger-crazed outlaw of the plains followed over the rich-scented trail made by the two Indians as they carried the slaughtered deer. Soon he nosed one of the trails of blood, and a moment later the watchers saw a gaunt shadow form running swiftly over the snow toward Wolf.

For an instant, as the two beasts of prey met, there fell a silence; then both animals joined in the wailing hunt-pack cry, and the wolf that was free came to the edge of the great rock and stood with his fore feet on its side, and his cry changed from that of the chase to the still more thrilling signal that told the gathering pack of game at bay.

Swiftly the wolves closed in. From over the edge of the mountain one came and joined the wolf at the rock without the hunters seeing his approach. From out of the swamp there came a pack of three, and now about the rock there grew a maddened, yelping horde, clambering and scrambling and fighting in their efforts to climb up to the game that was so near and yet beyond their reach. And sixty feet away Wolf crouched, watching the gathering of his clan, helpless, panting from his choking efforts to free himself, and quieting, gradually quieting, until in sullen silence he looked upon the scene, as though he knew the moment was very near when that thrilling spectacle would be changed into a scene of direst tragedy.

And it was Mukoki who had first said that this was the vengeance of Wolf upon his people.

From Mukoki there now came a faint hissing warning, and Wabi threw his rifle to his shoulder. There were at least a score of wolves at the base of the rock. Gradually the old Indian pulled upon the babeesh rope that led to the dead buck—pulled until he was putting a half of his strength into the effort, and could feel the animal slowly slipping from the flat ledge. A moment more and the buck tumbled down in the midst of the waiting pack.