He drew back from the precipice and stood erect. The buttress was only the advanced paw of the monster height that loomed above him. He looked up, measuring its sharp pitches, trying to shape a course around the slide. The sun dipped behind a spur, and the wind, pulling up the defile, sharpened. Then suddenly the great peaks that encircled him seemed to draw closer. They gathered personality; they became a tribunal, austere, uncompromising, sitting in supreme judgment; ready to follow quick sentence with swifter execution. Each mighty, hoary head turned to him, waiting, watchful, and a voice, intangible yet dominant like the silence, said, "Next."

"No," he answered aloud, and set his lips, "No, not yet. There is a way through, or else I can make one."

But close on this challenge there rang a rifle-shot. He swung around and dropped to his knee. Looking over the opposite edge of the buttress, he saw three horsemen at the curve which he had lately passed. Bates he knew instantly, from the powerful, white-faced bay he rode; and the big fellow, holding the rifle in readiness, while he checked in the long-limbed, nervous brown mount, was of course Thornton; the third was probably a deputy, and presently, while they waited reconnoitering the cliff, Myers joined them, urging Ginger. Then they all came slowly forward, and disappeared under the rim of the bastion.

Instantly Stratton was up. He threw himself into the saddle and put Sir Donald to the slope. The men would stop at the slide; they would turn back and doubtless pick up his trail at the rivulet. They would follow to the surface of the cliff and from there he would be an easy target along the bald face of the mountain. He pushed on tirelessly, winding, doubling, looking back often, listening, but keeping a course, always, for a small spur capped by two tilting tables of granite. He made the last steep stretch on foot, and Sir Donald, protesting, yet invariably obedient, pricking this ear, the other, to his master's brief, low command, followed to the level. The slabs, in falling from a higher ridge, had pitched shedwise against a wall, and Stratton crowded the chestnut into the hiding-place they roofed. Again, as in the hollow cedar trunk, there was not standing room for the horse; but a soft, peremptory word, a light blow on the forelegs, and he dropped to his knees, to his side, and became motionless. From his position, while he held down Sir Donald's head, Stratton looked out through the crack where the tables joined. It gave him a view of the buttress and a breadth of the trail approaching the lower curve.

Presently he saw Bates ride back to this bend with his deputy, and, after a brief halt, again to reconnoiter the top of the bastion, they rounded the curve and were gone. A moment later Thornton appeared on the top of the buttress, followed closely by Myers. They had left their horses, but the young rancher still carried his rifle, and when they had inspected the slide from the cliff, they took up the trail of the chestnut. But the light was failing, and the tracks were often lost on rocky stretches. They were forced to turn back repeatedly for the clue. Finally, not far from the granite tables, they stopped. "I 'low you might's well give it up, Mill," said Myers. "Ther sorrel was stumbling consider'ble on that ther last grade; she was losin' her nigh shoe. An' this here horse is pickin' up his feet like he was ready ter walk on air. It's ther chestnut, sure; he's er mighty good stepper in er mean place."

"An' it's Stratton I'm lookin' fur," answered Thornton grimly. "I don't keer what anybody says, he's responsible fur my horse. It was his business ter watch Smith; an' ef my little filly was cut down in that ther slide, Stratton's got to reckon 'ith me. He was here, standin' on that ther rock, when we kem 'round that curve; I saw him, an' so'd you, plain's day. He must hev gone up 'round ther slide, I dunno how, but he must hev, while we was foolin' erlong fur his blamed trail."

"Ther's somethin' mighty curious 'bout that ther chestnut," said Eben, dropping his voice and casting an apprehensive glance along the impossible way; "don't act like er nat'ral born horse. I dunno's I'd like ter ketch up 'ith him after night. You know that ther deputy 'lowed he got over ther woods, from ther schoolhouse trail, 'ithout leavin' er sign; an' Lem's ready ter swear, up and down, he see 'em, horse an' man, fade out o' sight close by that ther cedar snag. Mebbe it ain't so, but where in tarnation did he go? An' that boy kem home skeered out'n a hull year's growth."

"I dunno's I've figgered out these here inviserble folks correct, myself," said Thornton with deep irony, "but, fur a spirit horse, ther chestnut is able to take his fodder mighty reg'lar."

Eben stroked his beard and laughed softly. "Oh, I 'low he kin stand it ter hev his wings clipped, when he strikes ther bunch grass country. An' ef Bates catches ther Northern Pacific fur Portland, say to-morrow night, like he counted on, he'll hev time ter make ther upper Columbia an' lay fur his man, all right."

"I count on takin' him this side ther Pass, myself," answered Mill. "Bates 'lowed ther Government 'ud set up a mighty good reward; mebbe five hundred. An' ef that smart little filly o' mine went down in ther slide, I 'low an extry pack-horse went with her. Stratton can't go far 'ithout his outfit; he's got to sneak back sometime fur rations."