Twice he saw a wolf go trotting across the vista ahead of him, and once a gang of antelopes dashed away as he came in sight. Somewhere in that terrible tangle there must be human beings, red and white, he knew, and he would almost have welcomed the sight of an Indian when he saw the sun go down.

The moon did not rise, at once, and it was very dark and gloomy, as well as oppressively warm, in the chaparral. Heat came up from the sun-baked sand, and more heat seemed to creep out from among the bushes.

It was a time for Cal to look away down inside of himself and to call out all the courage there was in him.

"I can stand it another day, I know I can," he said to himself, "and I've got it to do. I won't wear out Dick. We must rest all night. It won't be a long night. Soon as it's light we must be moving. It'll be cooler then."

The spot that was somehow selected for his lonely bivouac was near the point where two broad paths crossed each other. Cal could not guess where they came from nor where they went to, nor which of them it would be best for him to travel by in the morning.

He fastened Dick's lariat to a bush, but there was no grass for the faithful mustang to pick upon. He stood in the path a very picture of patience, except that now and then he expressed a little thirsty discontent by a dejected pawing of the hot sand.

Cal had a blanket strapped behind the saddle, and he now spread it and lay down. He even went to sleep, and how long he had slumbered he did not know, when he was awakened by Dick's face close to his own, and a whimpering, low neigh. The red mustang was acting as a sentinel, and had heard something.

"What is it, Dick?" asked Cal, as he sprang to his feet, but the answer came in an unexpected manner.

There was a tramping sound along the other path, and then Cal heard voices. The moon was up, now, and its light fell upon what seemed an endless procession of horses and mules. There were mounted men among them, and Cal knew who they were.

"That's so," he muttered. "Those are the very Apaches we are after. Where can they be going at this time of night?"