Upon the level floor of the valley lay thin patches of snow which had fallen during the night. The air was biting cold, yet stimulated Shefford while it stung him. His horse drank rather slowly and disgustedly. Then Shefford mounted and reluctantly turned his back upon the trading-post. As he rode away from the pool he saw a large flock of sheep approaching. They were very closely, even densely, packed, in a solid slow-moving mass and coming with a precision almost like a march. This fact surprised Shefford, for there was not an Indian in sight. Presently he saw that a dog was leading the flock, and a little later he discovered another dog in the rear of the sheep. They were splendid, long-haired dogs, of a wild-looking shepherd breed. He halted his horse to watch the procession pass by. The flock covered fully an acre of ground and the sheep were black, white, and brown. They passed him, making a little pattering roar on the hard-caked sand. The dogs were taking the sheep in to water. Shefford went on and was drawing close to the other side of the basin, where the flat red level was broken by rising dunes and ridges, when he espied a bunch of ponies. A shrill whistle told him that they had seen him. They were wild, shaggy, with long manes and tails. They stopped, threw up their heads, and watched him. Shefford certainly returned the attention. There was no Indian with them. Presently, with a snort, the leader, which appeared to be a stallion, trotted behind the others, seemed to be driving them, and went clear round the band to get in the lead again. He was taking them in to water, the same as the dogs had taken the sheep. These incidents were new and pleasing to Shefford. How ignorant he had been of life in the wilderness! Once more he received subtle intimations of what he might learn out in the open; and it was with a less weighted heart that he faced the gateway between the huge yellow bluffs on his left and the slow rise of ground to the black mesa on his right. He looked back in time to see the trading-post, bleak and lonely on the bare slope, pass out of sight behind the bluffs. Shefford felt no fear--he really had little experience of physical fear--but it was certain that he gritted his teeth and welcomed whatever was to come to him. He had lived a narrow, insulated life with his mind on spiritual things; his family and his congregation and his friends--except that one new friend whose story had enthralled him--were people of quiet religious habit; the man deep down in him had never had a chance. He breathed hard as he tried to imagine the world opening to him, and almost dared to be glad for the doubt that had sent him adrift.