Then he saw the light. This time it burned suddenly clear and large and very bright, away off to the left of him where he had by daylight noticed a bare shale slide. The light seemed to stand in the very center of the slide, no more than a mile away.
William stopped when Casey pulled on the reins he had fashioned from the lead rope, and turned stiffly so that he faced the light. Casey kicked him gently with his heels to urge him forward, for in spite of what his reason told him about the shale slide his instinct was to go straight to the light. But William began to shiver and tremble, and to swing slowly away. Casey tried to prevent it, but the mule came out in William. He laid his good ear flat along his neck as far as it would go, and took little, nipping steps until he had turned with his tail to the light. Then he thrust his fawn-colored muzzle to the stars and brayed and brayed, his good ear working like a pump handle as he tore the sounds loose from his vitals.
Casey cursed him in a whisper, having no voice left. He kicked William in the flanks, having no other means of coercion at hand. But kicking never yet altered the determination of a mule, and cursing a mule in a whisper is like blowing your breath against the sail of a becalmed sloop. William kept his tail toward the light, and furthermore he momentarily drew his tail farther and farther from that spot. Now and then he would turn his head and glance back, and immediately increase his pace a little. He was long past the point where he had strength to trot, but he could walk, and he did walk and carry Casey on his back, still whispering condemnation.
They did not travel all night. Casey looked at the Big Dipper and judged it was midnight when they stopped on the brink of a deep canyon, halted there in William's sheer despair because the light appeared suddenly on the high point of a hill directly ahead of them. William's voice was gone like Casey's, so that he, too, cursed in a whisper with a spasmodic indrawing of ribs and a wheezing in his throat.
When it was plain that the mule had stopped permanently, Casey slid off William's back and lay down without knowing or caring much whether he would ever get up again. He said he wasn't hungry—much; but his mouth was too full of tongue, he added grimly.
He lay and watched through half-closed, staring eyes the light that mocked him so. His dulling senses told him that it was no camp fire, nor any light made by human hands. He did not know what it was. He didn't care any more. William crumpled up and lay down beside him, breathing heavily. It was getting close to the end of things. Casey knew it, and he thinks William knew it too.
The sun found them there and forced Casey to move. He sat up painfully, the fight to live not yet burned out of him, and gazed dully at the forbidding hills that closed around him like great, naked rock demons watching to see him die for want of the things they withheld. Where he remembered the light to have been when last he saw it was bleak, bare rock. It was a devil's light and there was nothing friendly or human about it.
He looked down into the canyon which William had refused to enter. A faint interest revived within him because of a patch of green. Trees,—but they might easily be junipers which will grow in dry canyons as readily, it would seem, as in any other. He kept looking, because green was a great relief from the monotonous gray and black and brown of the hills. It seemed to him after awhile that he saw a small splotch of dead white.
In the barren lands two things will show white in the distance; a white horse and a tent of white canvas. Casey shifted his position and squinted long at the spot, then got up slowly with the help of a bush and took William by the rope. William was on his feet, standing with head dropped, apparently half asleep. Casey knew that William was simply waiting until he could no longer stand.
Together they wabbled down the sloping canyon side and over a grassy bottom to the trees, which were indeed juniper trees, but thriftier looking than their brethren of the dry places. There was water, for William smelled it at last and hurried forward with more briskness than Casey could muster, eager though he was to reach the tent he saw standing there under the biggest juniper.