"Hold your burro in more, Jimmy," he would say; "there are too many precipices on our trail to take chances of his slipping, and dragging you over with him. To be sure mules and donkeys are clever about keeping their footing and almost equal Rocky Mountain sheep, or the chamois of the Alps that way; but they can stumble, we know, and it might come at a bad time. They're wild to get down out of this; but for one I don't care to take a short cut by plunging over a three hundred foot precipice. Easy now, Teddy; behave yourself, old boy. That's an ugly hole we're passing right now, and we want to go slow."