"The ceremony of dsilyídjeqaçàl, or mountain chant—literally, chant towards (a place) within the mountains—is one of a large number practiced by the shamans, or medicine men, of the Navajo tribe. I have selected it as the first of those to be described, because I have witnessed it the most frequently, because it is the most interesting to the Caucasian spectator, and because it is the best known t...