The bleating of the sheep heralded another day. With the brightening light began the drive over the sand. Under the cliff the shade was cool and fresh; there was no wind; the sheep made good progress. But the broken line of shade crept inward toward the flock, and passed it. The sun beat down, and the wind arose. A red haze of fine sand eddied about the toiling sheep and shepherds. Piute trudged ahead leading the king- ram, old Socker, the leader of the flock; Mescal and Hare rode at the right, turning their faces from the sand-filled puffs of wind; August and Dave drove behind; Wolf, as always, took care of the stragglers. An hour went by without signs of distress; and with half the five-mile trip at his back August Naab's voice gathered cheer. The sun beat hotter. Another hour told a different story--the sheep labored; they had to be forced by urge of whip, by knees of horses, by Wolf's threatening bark. They stopped altogether during the frequent hot sand-blasts, and could not be driven. So time dragged. The flock straggled out to a long irregular line; rams refused to budge till they were ready; sheep lay down to rest; lambs fell. But there was an end to the belt of sand, and August Naab at last drove the lagging trailers out upon the stony bench. The sun was about two hours past the meridian; the red walls of the desert were closing in; the V-shaped split where the Colorado cut through was in sight. The trail now was wide and unobstructed and the distance short, yet August Naab ever and anon turned to face the canyon and shook his head in anxious foreboding. It quickly dawned upon Hare that the sheep were behaving in a way new and singular to him. They packed densely now, crowding forward, many raising their heads over the haunches of others and bleating. They were not in their usual calm pattering hurry, but nervous, excited, and continually facing west toward the canyon, noses up. On the top of the next little ridge Hare heard Silvermane snort as he did when led to drink. There was a scent of water on the wind. Hare caught it, a damp, muggy smell. The sheep had noticed it long before, and now under its nearer, stronger influence began to bleat wildly, to run faster, to crowd without aim. “There's work ahead. Keep them packed and going. Turn the wheelers,” ordered August. What had been a drive became a flight. And it was well so long as the sheep headed straight up the trail. Piute had to go to the right to avoid being run down. Mescal rode up to fill his place. Hare took his cue from Dave, and rode along the flank, crowding the sheep inward. August cracked his whip behind. For half a mile the flock kept to the trail, then, as if by common consent, they sheered off to the right. With this move August and Dave were transformed from quiet almost to frenzy. They galloped to the fore, and into the very faces of the turning sheep, and drove them back. Then the rear-guard of the flock curved outward. “Drive them in!” roared August.