Grass? There was almost a thrill at Cal's heart. A temporary halt was making, and he saw a pony nibble something at the wayside. It must be that the southern edge of the desert had been reached at last.

The halt had been made for purposes of exploration. Trees and grass in that region were unmistakable signs of water, under the ground or above it. Cal sat still upon the pony and the warrior at his side was as motionless as a statue. All around them was deep and sombre shadow, but the air was cooler, and a breeze began to come out of the darkness before them.

Minutes passed, and then a clear, twice-repeated whoop came to their ears.

"Ugh!" said the lean Apache, with evident satisfaction. "Heap water. Boy drink plenty now. Sun come, tie up boy and make fire on him. How boy like fire? Ugh!"

Cal could make no reply whatever, except by a shudder, and they once more rode forward.


Chapter XXIII.

AT THE RANCH AND IN THE CHAPARRAL.

There was a very excellent reason why the old Spanish-Mexican settler had chosen that exact spot for the Santa Lucia ranch. It was the little spring which bubbled up in the middle of the courtyard around three sides of which the adobe was constructed. It had been dug out to a depth of several feet and walled in. It had never been known to fail, and it always had enough water left, after supplying the household, to furnish a tiny rill which ran away at one side of the gate in the palisades of the fourth side. This rill was planked over until it got away from the ranch, but it ran out into the sunshine then, and travelled gayly on to the corral. Here it found a number of acres of land, surrounded by a strong wire fence. It also found a long hollow to fill up with water, so that cattle and horses corralled there had plenty to drink. Except in the winter and spring there was little ever heard of that rill beyond the corral, and, if shrubbery had at any time grown upon its margin, it had long since been browsed away, for there was none there now.