And there a freshly mounted lad took up the chase and turned it west, and on they went past towns of prairie dogs, through soapweed tracts and cactus brakes by scores, and pricked and wrenched rode on. With dust and sweat the Black was now a dappled brown, but still he stepped the same. Young Carrington, who followed, bad hurt his steed by pushing at the very start, and spurred and urged him now to cut across a gulch at which the Pacer shied. Just one misstep and down they went. The boy escaped, but the pony lies there yet, and the wild Black Horse kept on. This was close to old Gallego's ranch where Jo himself had cut across refreshed to push the chase. Within thirty minutes he was again scorching the Pacer's trail. Far in the west the Carlos Hills were seen, and there Jo knew fresh men and mounts were waiting, and that way the indomitable rider tried to turn, the race, but by a sudden whim, of the inner warning born perhaps--the Pacer turned. Sharp to the north he went, and Jo, the skilful wrangler, rode and rode and yelled and tossed the dust with shots, but down on a gulch the wild black meteor streamed and Jo could only follow. Then came the hardest race of all; Jo, cruel to the Mustang, was crueller to his mount and to himself. The sun was hot, the scorching plain was dim in shimmering heat, his eyes and lips were burnt with sand and salt, and yet the chase sped on. The only chance to win would be if he could drive the Mustang back to the Big Arroyo Crossing. Now almost for the first time he saw signs of weakening in the Black. His mane and tail were not just quite so high, and his short half mile of start was down by more than half, but still he stayed ahead and paced and paced and paced. An hour and another hour, and still they went the same. But they turned again, and night was near when Big Arroyo ford was reached--fully twenty miles. But Jo was game, he seized the waiting horse. The one he left went gasping to the stream and gorged himself with water till he died. Then Jo held back in hopes the foaming Black would drink. But he was wise; he gulped a single gulp, splashed through the stream and then passed on with Jo at speed behind him. And when they last were seen the Black was on ahead just out of reach and Jo's horse bounding on. It was morning when Jo came to camp on foot. His tale was briefly told:--eight horses dead--five men worn out--the matchless Pacer safe and free. "Tain't possible; it can't be done. Sorry I didn't bore his hellish carcass through when I had the chance," said Jo, and gave it up. VI Old Turkeytrack was cook on this trip. He had watched the chase with as much interest as anyone, and when it failed he grinned into the pot and said: "That mustang's mine unless I'm a darned fool." Then falling back on Scripture for a precedent, as was his habit, he still addressed the pot: