And then the thing happened--the thing unthinkable and unexpected. His descending foot came down upon something that was soft and alive, and that arose with a snort under the weight of his body. He sprang clear, and crouched for another spring, anywhere, tense and expectant, keyed for the onslaught of the unknown. He waited a moment, wondering what manner of animal it was that had arisen from under his foot and that now made no sound nor movement and that must be crouching and waiting just as tensely and expectantly as he. The strain became unbearable. Holding the night-stick before him, he pressed the button, saw, and screamed aloud in terror. He was prepared for anything, from a frightened calf or fawn to a belligerent lion, but he was not prepared for what he saw. In that instant his tiny searchlight, sharp and white, had shown him what a thousand years would not enable him to forget--a man, huge and blond, yellow-haired and yellow-bearded, naked except for soft-tanned moccasins and what seemed a goat-skin about his middle. Arms and legs were bare, as were his shoulders and most of his chest. The skin was smooth and hairless, but browned by sun and wind, while under it heavy muscles were knotted like fat snakes. Still, this alone, unexpected as it well was, was not what had made the man scream out. What had caused his terror was the unspeakable ferocity of the face, the wild-animal glare of the blue eyes scarcely dazzled by the light, the pine-needles matted and clinging in the beard and hair, and the whole formidable body crouched and in the act of springing at him. Practically in the instant he saw all this, and while his scream still rang, the thing leaped, he flung his night-stick full at it, and threw himself to the ground. He felt its feet and shins strike against his ribs, and he bounded up and away while the thing itself hurled onward in a heavy crashing fall into the underbrush.