"Caribou," said Rea instantly. "The vanguard of the migration. Hear the Indians! Hear their cry: "Aton! Aton!" they mean reindeer. The idiots have scared the herd with their infernal racket, an' no meat will they get. The caribou will keep to the ice, an' man or Indian can't stalk them there." For a few moments his companion surveyed the lake and shore with a plainsman's eye, then dashed within, to reappear with a Winchester in each hand. Through the crowd of bewailing, bemoaning Indians; he sped, to the low, dying bank. The hard crust of snow upheld him. The gray cloud was a thousand yards out upon the lake and moving southeast. If the caribou did not swerve from this course they would pass close to a projecting point of land, a half-mile up the lake. So, keeping a wary eye upon them, the hunter ran swiftly. He had not hunted antelope and buffalo on the plains all his life without learning how to approach moving game. As long as the caribou were in action, they could not tell whether he moved or was motionless. In order to tell if an object was inanimate or not, they must stop to see, of which fact the keen hunter took advantage. Suddenly he saw the gray mass slow down and bunch up. He stopped running, to stand like a stump. When the reindeer moved again, he moved, and when they slackened again, he stopped and became motionless. As they kept to their course, he worked gradually closer and closer. Soon he distinguished gray, bobbing heads. When the leader showed signs of halting in his slow trot the hunter again became a statue. He saw they were easy to deceive; and, daringly confident of success, he encroached on the ice and closed up the gap till not more than two hundred yards separated him from the gray, bobbing, antlered mass. Jones dropped on one knee. A moment only his eyes lingered admiringly on the wild and beautiful spectacle; then he swept one of the rifles to a level. Old habit made the little beaded sight cover first the stately leader. Bang! The gray monarch leaped straight forward, forehoofs up, antlered head back, to fall dead with a crash. Then for a few moments the Winchester spat a deadly stream of fire, and when emptied was thrown down for the other gun, which in the steady, sure hands of the hunter belched death to the caribou. The herd rushed on, leaving the white surface of the lake gray with a struggling, kicking, bellowing heap. When Jones reached the caribou he saw several trying to rise on crippled legs. With his knife he killed these, not without some hazard to himself. Most of the fallen ones were already dead, and the others soon lay still. Beautiful gray creatures they were, almost white, with wide-reaching, symmetrical horns. A medley of yells arose from the shore, and Rea appeared running with two sleds, with the whole tribe of Yellow Knives pouring out of the forest behind him.