Away up among the Rockies, with towering, pine-fringed, snow-sprinkled crests looming dimly about them in the moonlight, two young men stood waiting by a switch-target of the Transcontinental. Facing westward, they could see the huge bulk of the mountain range rolling up between them and the starry sky-line, black and forbidding in the middle distance, yet fading away northward and southward into faint and tender outlines--soft grays and violets--and with the earliest signals in the East of the speedy coming of the long summer's day. Facing eastward, there confronted them close at hand the huge black bulk of the mammoth Mogul engine, its dazzling head-light shining afar up the westward right of way, and throwing into heavier shade, by force of contrast, every object outside its beams. In the solemn stillness of nature in those high levels, almost the only sound was the soft hiss of escaping steam from the cylinder-cocks or an occasional rumble from the boiler. Even murmured words seemed audible and intelligible sixty feet away, and twice big Ben Tillson, the engineer of 705, had pricked up his ears as he circled about his giant steed, oiling the grimy joints, elbows, and bearings, and pondering in his heavy, methodical way over certain parting instructions that had come to him from the lips of the division superintendent. "A young feller learning firing" would board him at Chimney Switch, forty miles out from the Springs, and the Boss desired Ben Tillson to understand that "The Road" had its reasons, and the "young feller" was to be spared the customary quizzing. Furthermore, Ben Tillson was to understand that nothing was to be said about it. If anybody at Argenta or among the mines had any questions to ask, Ben was to know next to nothing. But what set Ben's wits to work was the odd behavior of his fireman, Jim Toomey. Toomey was a silent sort of chap as a rule, and surely, too, with a grudge against the gang over in Hatch's Cove and up the Run. Toomey had taken to firing because he had got cleaned out at the mines. Toomey ordinarily wasn't over-civil to anybody. Toomey, too, had been favored with a word from Mr. Anthony, and never had Big Ben seen his fireman more cheery over his work than he was that night as they panted and strained up the foot-hills to Chimney Switch. Ben could have sworn Toomey was "excited like" when they side-tracked there for a way-train, and never in the course of Big Ben's experience had he seen an old fireman greet a would-be as Toomey welcomed the tall "young feller" in the dirty cap, shirt, and overalls who there clambered into the cab. Twice, Ben could have further sworn, he had heard Toomey say "sir," a word Toomey used to no one less than the division superintendent.