The Canadian River on the south, its affluent, the Piñavetitos Arroyo, on the northeast, and the Don Carlos Hills with the Ute Creek Cañon on the west, formed a sixty-mile triangle that was the range of the Pacer. It was believed that he never went outside this, and at all times Antelope Springs was his headquarters.
Jo knew this country well, all the water-holes and canon crossings as well as the ways of the Pacer.
If he could have gotten fifty good horses he could have posted them to advantage so as to cover all points, but twenty mounts and five good riders were all that proved available.
The horses, grain-fed for two weeks before, were sent on ahead; each man was instructed how to play his part and sent to his post the day before the race. On the day of the start Jo with his wagon drove to the plain of Antelope Springs and, camping far off in a little draw, waited.
At last he came, that coal-black Horse, out from the sand-hills at the south, alone as always now, and walked calmly down to the Springs and circled quite around it to sniff for any hid-
