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270 pace, to be within earshot of the fleeing herd when darkness should make safe a nearer approach.

With the coming of twilight came a falling of temperature and when the afterglow bathed the desert with magic light and then faded as swiftly as though a great curtain had been dropped the creeping chill took bold, sudden possession of the desert air to a degree unbelievable. So passed the night, weary hour after cold, weary hour; but the change was priceless to man and beast. The magic metamorphosis emphasized the many-sided nature of the desert, at one time a blazing, glaring thing of sinister aspect and death-dealing heat; at another cold, almost freezing, its considerable altitude being good reason for the night's penetrating chill. The expanse of dim gray carpet, broken by occasional dark blots where the scrawny, scattered vegetation arose from the sands, stretched away into the veiling dark, allowing keen eyes to distinguish objects at surprising distances. Overhead blazed the brilliant stars, blazed as only stars in desert heavens can, seeming magnified and brought nearer by the dry, clear air. His eyes at last free from the blinding glare of quivering air and glittering crystals of salts in the sand; his dry, parched, burning skin free from the baking heat, which sucked moisture from the pores before perspiration could form on the surface; he sucked in great gulps of the vitalizing, cold air and found the night so refreshing, so restful as to almost compensate for the loss of sleep.

The increased pace of his mount at last brought reward, for there now came from ahead and from the right the low, confused noise of hurrying cattle, as continuous, unobtrusive, and restful as the soft roar of