True, both ranchers had had a hazy idea of investigating grazing conditions in the Ova, before shifting their flocks, as usual, to the government grazing lands on the slopes of the Dos Hermanos peaks, for the summer and autumn. But it was a trip any of their men could have made for them. It was unlike Joel to waste two busy days that way, in person. Royce could not well avoid wondering at it. This possibility, too, escaped Fenno’s imagination. To him, his scheme appeared truly inspired. He valued Mack’s partnership. In a grouchy way, he was fond of the jolly young fellow. Royce was a hard worker and a good sheep man. Moreover, he had up-to-date ideas which more than once had been coined into money for the ranch. Fenno had no intention of breaking with so useful a partner. At the same time, he had still less intent of letting Royce go on loafing and frittering valuable time away, as Joel deemed it, by making a pet of a dog. He regarded the romps and comradeship and long walks of the two, as a hustling financier might view a card game among his employees in the middle of a busy office day. Time was money. Also, if Mack had any energy and inventiveness to spare, he might better place those at the service of the ranch than in teaching a cur to find his tobacco pouch or to catch food-morsels from the top of his own nose. Joel had protested. His protest had been met by Mack’s firm refusal to give up the collie. There was no sense wasting time in useless bickering. The one wise move was to get rid of the dog; and to do it in such a manner that Mack should not suspect his partner of doing it purposely. Fenno’s plan had been worked out, in swift detail, as soon as Royce had departed for the day’s work. He would start on horseback toward the Ova. At some spot too far from the ranch for Mack to trace the deed, and lonely enough to preclude the chance of witnesses, he would stop; put a bullet through the collie; scoop out a shallow grave in the sand and bury him. Then, the same evening Fenno would return to the ranch house, saying Treve had run away during their journey and that he had come back for him. Mack could prove nothing. According to Joel’s elaborate calculations, he could suspect nothing. Treve would merely seem to have strayed from his human companion of the trip, and either to have lost his way home or to have been stolen by some Mexican or else shot by a passing cattleman. It was very simple. Fenno made certain of his scheme’s verisimilitude by ordering Chang, the cook, to put up two days’ rations for him. Then, giving commands to Toni, he saddled his mustang for the lethal ride toward the Ova. At his imperative whistle, Treve ranged alongside the pony, and the two set forth.