When the prayer was ended, all those gathered in the wigwam ejaculated “Hau,” and three of the elders smoked and listened while Terrible-eagle began the instruction by relating the history of the origin of the Medicine Lodge. Taking the drumstick in his hand, Terrible-eagle gave four distinct strokes on the drum, and recited in a rhythmic and solemn tone, hushing his voice to a whisper when it became necessary to mention a great Power by name.