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.
Hare sent Silvermane at the deflecting sheep and frightened them into line.
Wolf no longer had power to chase the stragglers; they had to be turned by a horse. All along the flank noses pointed outward; here and there sheep wilder than the others leaped forward to lead a widening wave of bobbing woolly backs. Mescal engaged one point, Hare another, Dave another, and August Naab's roan thundered up and down the constantly broken line. All this while as the shepherds fought back the sheep, the flight continued faster eastward, farther canyonward. Each side gained, but the flock gained more toward the canyon than the drivers gained toward the oasis.
By August's hoarse yells, by Dave's stern face and ceaseless swift action, by the increasing din, Hare knew terrible danger hung over the flock; what it was he could not tell. He heard the roar of the river rapids, and it seemed that the sheep heard it with him. They plunged madly; they had gone wild from the scent and sound of water. Their eyes gleamed red; their tongues flew out. There was no aim to the rush of the great body of sheep, but they followed the leaders and the leaders followed the scent. And the drivers headed them off, rode them down, ceaselessly, riding forward to check one outbreak, wheeling backward to check another.
The flight became a rout. Hare was in the thick of dust and din, of the terror-stricken jumping mob, of the ever-starting, ever-widening streams of sheep; he rode and yelled and fired his Colt. The dust choked him, the sun burned him, the flying pebbles cut his cheek. Once he had a glimpse of Black Bolly in a melee of dust and sheep; Dave's mustang blurred in his sight; August's roan seemed to be double. Then Silvermane, of his own accord, was out before them all.
The sheep had almost gained the victory; their keen noses were pointed toward the water; nothing could stop their flight; but still the drivers dashed at them, ever fighting, never wearying, never ceasing.
At the last incline, where a gentle slope led down to a dark break in the desert, the rout became a stampede. Left and right flanks swung round, the line lengthened, and round the struggling horses, knee-deep in woolly backs, split the streams to flow together beyond in one resistless river of sheep. Mescal forced Bolly out of danger; Dave escaped the right flank, August and Hare swept on with the flood, till the horses, sighting the dark canyon, halted to stand like rocks.
"Will they run over the rim ?" yelled Hare, horrified. His voice came to him as a whisper. August Naab, sweat-stained in red dust, haggard, gray locks streaming in the wind, raised his arms above his head, hopeless.
The long nodding line of woolly forms, lifting like the crest of a yellow wave, plunged out and down in rounded billow over the canyon rim. With din of hoofs and bleats the sheep spilled themselves over the precipice, and an awful deafening roar boomed up from the river, like the spreading thunderous crash of an avalanche.
How endless seemed that fatal plunge! The last line of sheep, pressing close to those gone before, and yet impelled by the strange instinct of life, turned their eyes too late on the brink, carried over by their own momentum.
The sliding roar ceased; its echo, muffled and hollow, pealed from the cliffs, then rumbled down the canyon to merge at length in the sullen, dull, continuous sound of the rapids.
Hare turned at last from that narrow iron-walled cleft, the depth of which he had not seen, and now had no wish to see; and his eyes fell upon a little Navajo lamb limping in the trail of the flock, headed for the canyon, as sure as its mother in purpose. He dismounted and seized it to find, to his infinite wonder and gladness, that it wore a string and bell round its neck. It was Mescal's pet.