Apparently, MacGonigal was thinking hard, listening, too; for he seemed to be following Power's movements, and nodded his head in recognition of the rattle of a chain as the horse was tied to a feeding trough, the clatter of a zinc bucket when Power drew water from a tank, and the stamping of hoofs while Power was persuading the lame mustang to let him bathe and bandage the injured tendons. Then the animal was given a drink--he would be fed later--and the ring of spurred boots on the sun-baked ground announced that Derry was returning to the store. Power's nickname, in a land where a man's baptismal certificate is generally ignored, was easily accounted for by his second name, Darien, conferred by a proud mother in memory of a journey across the Isthmus when, as a girl, she was taken from New York to San Francisco by the oldtime sea route. The other day, when he stood for a minute or so in the foyer of the Savoy Hotel in London, waiting while his automobile was summoned from the courtyard, he seemed to have lost little of the erect, sinewy figure and lithe carriage which were his most striking physical characteristics twenty-five years ago; but the smooth, dark-brown hair had become gray, and was slightly frizzled about the temples, and the clean-cut oval of his face bore records of other tempests than those noted by the Weather Bureau. In walking, too, he moved with a decided limp. At fifty, John Darien Power looked the last man breathing whom a storekeeper in a disheveled mining village would hail as "Derry"; yet it may be safely assumed that his somewhat hard and care-lined lips would have softened into a pleasant smile had someone greeted him in the familiar Colorado way. And, when that happened, the friend of bygone years would be sure that no mistake had been made as to his identity; for, in those early days, Power always won approval when he smiled. His habitual expression was one of concentrated purpose, and his features were cast in a mold that suggested repose and strength. Indeed, their classic regularity of outline almost bespoke a harsh nature were it not for the lurking humor in his large brown eyes, which were shaded by lashes so long, and black, and curved that most women who met him envied him their possession. Children and dogs adopted him as a friend promptly and without reservation; but strangers of adult age were apt to regard him as a rather morose and aloof-mannered person, distinctly frigid and self-possessed, until some chance turn in the talk brought laughter to eyes and lips. Then a carefully veiled kindliness of heart seemed to bubble to the surface and irradiate his face. All the severity of firm mouth and determined chin disappeared as though by magic; and one understood the force of the simile used by a western schoolma'am, who contributed verse to the _Rocky Mountain News_, when she said that Derry's smile reminded her of a sudden burst of sunshine which had