Presently he saw a horse and rider come into dark prominence on the ridge just above his camp. They were silhouetted against the starry sky. The horseman stopped and he and his steed made a magnificent black statue, somehow wild and strange, in Shefford's sight. Then he came on, vanished in the darkness under the ridge, presently to emerge into the circle of camp-fire light. He rode to within twenty feet of Shefford and the fire. The horse was dark, wild-looking, and seemed ready to run. The rider appeared to be an Indian, and yet had something about him suggesting the cowboy. At once Shefford remembered what Presbrey had said about half-breeds. A little shock, inexplicable to Shefford, rippled over him. He greeted his visitor, but received no answer. Shefford saw a dark, squat figure bending forward in the saddle. The man was tense. All about him was dark except the glint of a rifle across the saddle. The face under the sombrero was only a shadow. Shefford kicked the fire-logs and a brighter blaze lightened the scene. Then he saw this stranger a little more clearly, and made out an unusually large head, broad dark face, a sinister tight-shut mouth, and gleaming black eyes. Those eyes were unmistakably hostile. They roved searchingly over Shefford's pack and then over his person. Shefford felt for the gun that Presbrey had given him. But it was gone. He had left it back where he had lost his horse, and had not thought of it since. Then a strange, slow-coming cold agitation possessed Shefford. Something gripped his throat. Suddenly Shefford was stricken at a menacing movement on the part of the horseman. He had drawn a gun. Shefford saw it shine darkly in the firelight. The Indian meant to murder him. Shefford saw the grim, dark face in a kind of horrible amaze. He felt the meaning of that drawn weapon as he had never felt anything before in his life. And he collapsed back into his seat with an icy, sickening terror. In a second he was dripping wet with cold sweat. Lightning-swift thoughts flashed through his mind. It had been one of his platitudes that he was not afraid of death. Yet here he was a shaking, helpless coward. What had he learned about either life or death? Would this dark savage plunge him into the unknown? It was then that Shefford realized his hollow philosophy and the bitter-sweetness of life. He had a brain and a soul, and between them he might have worked out his salvation. But what were they to this ruthless night-wanderer, this raw and horrible wildness of the desert? Incapable of voluntary movement, with tongue cleaving to the roof of his mouth, Shefford watched the horseman and the half-poised gun. It was not yet leveled. Then it dawned upon Shefford that the stranger's head was turned a little, his ear to the wind. He was listening. His horse was listening. Suddenly he straightened up, wheeled his horse, and trotted away into the darkness. But he did not climb the ridge down which he had come.