The pace was tremendous, for the youth's weight was nothing to that muscular frame, which bounded with cat-like agility from wave to wave of the undulating plain in ungovernable terror. In a few minutes the clump of willows where Crusoe and his rifle lay were out of sight behind; but it mattered not, for Dick had looked up at the sky and noted the position of the sun at the moment of starting. Away they went on the wings of the wind, mile after mile over the ocean-like waste--curving slightly aside now and then to avoid the bluffs that occasionally appeared on the scene for a few minutes and then swept out of sight behind them. Then they came to a little rivulet. It was a mere brook of a few feet wide, and two or three yards, perhaps, from bank to bank. Over this they flew so easily that the spring was scarcely felt, and continued the headlong course. And now a more barren country was around them. Sandy ridges and scrubby grass appeared everywhere, reminding Dick of the place where he had been so ill. Rocks, too, were scattered about, and at one place the horse dashed with clattering hoofs between a couple of rocky sand-hills which, for a few seconds, hid the prairie from view. Here the mustang suddenly shied with such violence that his rider was nearly thrown, while a rattlesnake darted from the path. Soon they emerged from this pass, and again the plains became green and verdant. Presently a distant line of trees showed that they were approaching water, and in a few minutes they were close on it. For the first time Dick felt alarm. He sought to check his steed, but no force he could exert had the smallest influence on it. Trees and bushes flew past in bewildering confusion. The river was before him; what width, he could not tell, but he was reckless now, like his charger, which he struck with the willow rod with all his force as they came up. One tremendous bound, and they were across, but Dick had to lie flat on the mustang's back as it crashed through the bushes to avoid being scraped off by the trees. Again they were on the open plain, and the wild horse began to show signs of exhaustion. Now was its rider's opportunity to assert his dominion. He plied the willow rod and urged the panting horse on, until it was white with foam and laboured a little in its gait. Then Dick gently drew the halter, and it broke into a trot; still tighter, and it walked, and in another minute stood still, trembling in every limb. Dick now quietly rubbed its neck, and spoke to it in soothing tones; then he wheeled it gently round, and urged it forward. It was quite subdued and docile. In a little time they came to the river and forded it, after which they went through the belt of woodland at a walk. By the time they reached the open prairie the mustang was recovered sufficiently to feel its spirit returning, so Dick gave it a gentle touch with the switch, and away they went on their return journey.