Houston shook his head.
"I don't know. Has something gone wrong?"
"Plenty. Both the firemen on Number Six have went out from gas—in the snowshed. We've picked up a guy out of an ice gang that's willin' to stand th' gaff, but we need another one. Guess there ain't nothin' to do but wake up one of th' day crew. Hate t' do it, though—they're all in."
"Don't, then. I'll make a try at it."
"Know anything about firin' an engine?"
"I know enough to shovel coal—and I've got a strong pair of shoulders."
"Come on, then."
Houston followed the figure toward the snowshed on the hill. Ten minutes later he stood beside a great Mallet engine, a sleek, glistening grayhound of the mountains, taking from the superintendent the instructions that would enable him to assist, at least, in the propulsion of the motive power. At the narrow areaway between the track and the high wall of the straightaway drifts through which the plow had cut, four men were lifting a limp figure, to carry it to the cars. The superintendent growled.
"You payin' attention to me—or that guy they're cartin' off? When you get in them gas pockets, stick your nose in the hollow of your elbow and keep it there 'till you've got your breath again. There ain't no fresh air in that there shed; the minute these engines get inside and start throwin' on the juice, it fills up with smoke. That's what gets you. Hold your nose in your arm while you take your breath. Then, if you've got to shovel, keep your mouth and your lungs shut. Got me?"
"Yes, sir."