Therefore the rider divined that the two men must be shooting at another who was on the far side of the rock; and he ran to Purgatory, speaking no word until he had vaulted into the saddle. Then he spoke shortly.
“They’re white men, Purgatory, an’ they’re havin’ a private rukus, looks like. But we’re doin’ some investigatin’ just to see if the game’s on the level.”
CHAPTER II
A MAN’S REPUTATION
Purgatory moved fast, but warily. The black horse seemed to have caught something of his rider’s caution. For part of the distance toward the rock the animal traveled straight, loping rapidly, but as he neared the little stretch of broken country that surrounded the rock he began to sheer off, advancing with mincing steps, his ears erect, his eyes wide and alert, snorting suspiciously.
Knowing his horse, the rider made no attempt to guide him; he knew Purgatory was alert to any hostile movement on the part of the men who were shooting, and that at the first sign of danger to himself or to his rider he would do what was required of him.
The man on the summit of the rock was still shooting, though intermittently. It seemed to the rider that the man’s target must be elusive or concealed, for the shooter’s actions showed that he was irritated. The other man, too, was still shooting. The rider noted that he, too, seemed to be meeting with failure, for as the rider drew nearer he heard the man curse.
Neither of the two men who were visible to the rider had seen him—neither of them had heard the big black horse gliding over the deep sand of the desert. The rider grinned with grim mirthlessness, edging Purgatory around so that the two men, their backs toward him, were not more than twenty or thirty feet away and entirely exposed to his view.