If he had never ridden a cow pony he would have been thrown and dragged the instant he put his foot in the narrow metal stirrup. The horse was watching him alertly, every muscle tense. Ashton smiled confidently, spoke to the beast in a quiet tone, and pulled on the off rein. The horse bent his head to the pull, for the moment off his guard. In a twinkling Ashton had his foot in the stirrup and was up in the saddle. His toe slipped into the other stirrup as the horse jumped sideways. The leap was tremendous, but it failed to unseat Ashton. It was instantly followed by other wild jumps--whirling forward and sidelong leaps, interspersed with frantic plunging and rearing. Gowan looked on, agape with amazement. The tenderfoot stuck fast on his flat little saddle and only once pulled leather. Rocket was not a star bucker, but he had thrown more than one half-baked cowboy. Finding that he could not unseat his rider, the beast suddenly gave over his plunging, and bolted at furious speed down the smooth slope towards Plum Creek. Before they had gone half a furlong Ashton realized that he was on a blooded horse of unusual speed and a runaway. He could not hope to pull down so tough-mouthed a beast with his ordinary curb. The best he could do was to throw all his weight on the right rein. Unable altogether to resist the steady tug at his head, the racing horse gradually swerved until he was headed across the mesa towards the jagged, snow-streaked twin crests of Split Peak. Horse and rider were still in the curve of their swift flight when Isobel Knowles came out into the porch, yawning behind her plump, sunbrowned hand. A glance at Gowan cut the yawn short. She looked alertly afield and at once caught sight of the runaway. "Kid!--O-oh!" she cried. "Mr. Ashton!--on Rocket!" Gowan spun about to her with a guilty start, but answered almost glibly: "You said he could ride, Miss Chuckie." "He'll--he'll be killed!--Daddy!" Knowles stepped out through the doorway, cocking his big blue-barreled Colt's. Gowan hastily pointed towards the runaway. Knowles looked, and dropped the revolver to his side. "What's up?" he growled. "Kid--he--he put Mr. Ashton on Rocket!" breathlessly answered his daughter. "Sorry to contradict you, Miss Chuckie," said Gowan. "He put himself on." "He's on yet," dryly commented the cowman. "May be something to that boy, after all." "But, Daddy!--" "Now, just stop fussing yourself, honey. He and Rocket are going smooth as axlegrease and bee-lining for Stockchute. How did the hawss start off?--skittish?" "Enough to make the tenderfoot pull leather," said Gowan. "If he stuck at all, with that fool saddle--!" rejoined Knowles. "Don't you worry, honey. He sure can fork a hawss--that tenderfoot." "Oh, yes," the girl sighed with relief. "If Rocket started off bucking, and he kept his seat, of course it's all right. See him take that gully!"