Three miles out and the Mogul's six drivers were spinning like so many tops. Flat along the grimy roofs of the heaving freight-cars behind, the cloud of coal smoke from her stunted chimney fled rearward until clear of the train, then drifted idly across the rolling uplands. Ahead and to right and left, distant, snow-capped summits barred the sky-line. On either side the gray-green slopes, bare and treeless, billowed away, higher and higher toward the range, with here and there a bunch of fattening cattle gazing stupidly at the invaders of their peace and quietude. Close at hand to the left the murky waters of the stream flashed quickly by. Close at hand to the right the hard-beaten prairie road meandered over the sod. There had been a ridge or two and some sharp curves just west of town, and now, as they rounded the last of these and flew out upon an almost level track, the bottom of some prehistoric mountain lake, the eyes of two of the three silent occupants of the cab were strained along the gleaming rails ahead, and almost at the same instant the same thought sprang to the lips of each--Big Ben, with his left hand at the throttle, hunched up on his shelf, his cap pulled down over the bushy brows, and Geordie, across the cab on the fireman's seat, clinging to the window-frame to withstand the lurching of the throbbing monster, while between them, on the coal-blackened floor, Toomey, with his big shovel flinging open the iron gate to the blazing furnace for every new mouthful he fed it, and snapping it shut when he turned away for another, for not a whiff of the draught could be wasted. Once past the deserted station at the Fort there would come eight miles of twisting and turning and struggling up-grade, and every pound of steam would be needed to pull even this baker's dozen of heavily laden cars now thundering merrily along behind. [Illustration: "NOT A WHIFF OF THE DRAUGHT COULD BE WASTED"] Only two short, smooth miles ahead lay the low ridge that formed the eastern boundary of the old reservation. Beyond it, on the broad _mesa_, stood the buildings of the frontier garrison, once Geordie's home and refuge. The tall flag-staff came suddenly into view, and in less than four minutes they would be rushing by. Over forty miles to the hour were they flying now. Big Ben had just let out another notch as they swung into the two-mile tangent, when at the same instant he and Geordie caught sight of three or four black dots dimly bobbing in the midst of a little dust-cloud on the roadway far ahead, and almost at the same instant came from each the low cry, "There they are!"