But suddenly that silence did break to the rattle of a rock. Shefford listened, thinking some wild animal was prowling around. He felt no alarm. Presently he heard the sound again, and again. Then he recognized the crack of unshod hoofs upon rock. A horse was coming down the trail. Shefford rather resented the interruption, though he still had no alarm. He believed he was perfectly safe. As a matter of fact, he had never in his life been anything but safe and padded around with wool, hence, never having experienced peril, he did not know what fear was.

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.