from his swift trot. As long as he could keep the mare in sight he was content.
The sun was sailing high and the Moose was winded when the mare, cantering painfully along the ridge of a hill, stumbled and fell. She was up again at once but her gait slowed, perceptibly. In less than a half-hour Doug was within roping distance of her. As the lariat sung above her head, she half turned, gave Doug a look of anguished surprise, leaped sideways and disappeared up a crevice in a canyon wall. Douglas spurred the Moose in after her. They were in a little valley, thick grown with dwarf willow. The mare was not to be seen.
Now began a search that persisted till the Moose's sturdy legs were trembling. Douglas threaded the valley again and again. There was no exit save through the one crevice by which they had entered. He had all but concluded that the mare had been swallowed up by the earth when he found her trail, turning up the south wall. He spurred the Moose upward, and there in a clump of cedars he found her hiding. With a laugh he again twirled his rope and it slipped over the tossing black head. As the Moose turned and the rope tightened, the mare gave a scream that was like that of a human being in dire agony. For a moment she dragged back, then, head drooping, trembling in every muscle, she followed in.
Dusk was falling when Douglas made the camp. Charleton already had started a fire in the little cook-stove. He came out and examined the mare as well as the failing light and her extreme timidity permitted.
"She's a beauty, Doug. Don't believe she's over four years old. Any brand on her?"
"No. From the looks of her hoofs, I'd say she'd been