They urged on their horses and pounded down the hill toward the small circus Brown Betty was making of herself. She cavorted, shook herself, humped her back, jumped up and down, stood on her front feet and almost sat on her tail, and did everything that equine intelligence could devise to rid herself of the masterful hand on her bridle. But the Mexican kept his seat and his grip upon the rein. With spur and quirt and compelling voice he finally forced her into submission. As she quieted down they were facing the pursuing posse and Melgares had just turned the mare's head in another desperate attempt at escape when Conrad's voice rang out once more, and Brown Betty refused to move. She tossed her head, laid back her ears, and whinnied, but would not lift a hoof. The Mexican drew his revolver and shouted, "Stop!" The horsemen, not more than a hundred yards distant, drew rein at the word--all except Pendleton, who came pounding and bouncing to the front, his horse still on the gallop. Gaines, just behind Tillinghurst and Wilder, called out laughingly, "Hooray for Pendy! Go on and get him, Pendy!" Pendleton had been too much occupied with keeping his seat to try to stop his horse, and as it went on half a length in advance of the rest Gaines leaned forward and gave it a cut across the flank with his quirt. It leaped forward smartly and Pendleton, taken unawares again, bobbed down on its neck and grabbed for its mane. Melgares saw the horse start forward and instantly his revolver flashed. The bullet left a singed streak across the back of Pendleton's coat, whistled on, and found refuge in Gaines's side. Wilder's gun was out and cocked. He saw Pendleton lying on his horse's neck, and heard Gaines cry out, "I'm hit!" as he fell forward across his pommel. "Stop that!" he called. "Fire again and you're a dead man!" Melgares leaped from the mare's back and ran at full speed down the valley, away from the road. Brown Betty came trotting to Conrad's side, whinnying joyfully. Pendleton sat upright, calling out, "Say, fellows, is there any blood on my back?" They told him no and as he climbed down from his saddle clumsily he grinned and said: "Well, I can still die of consumption, then!" Tillinghurst, Wilder, and several of the others were galloping after Melgares, who was running for his life down the valley toward a clump of cactus and juniper. "Wing him, Jack!" called the Sheriff. "There's a crack in the ground down there where he can hide and pick us off as he pleases." Little Jack brought his horse to a sudden stop, aimed low, and the Mexican reeled and fell, the blood gushing from a wound in the calf of his leg. He scrambled to his feet, and fired his second shot. The bullet nicked the brim of the Sheriff's hat. There was another flash, and Wilder heard the bullet sing past his ear.