(Told by No-flesh)
My father was a medicineman and he knew all diseases. He knew what caused them. He could cure all diseases. He knew the best of medicines. When he was a very young man, he had a vision, in which the great bear took him to the region of the spirits. He joined the spirits in the mystery dance and they instructed him in regard to all diseases and the medicines good for them.
Sage drives away evil spirits. Sweetgrass pleases the good spirits. The influence (Tonwan) of the spirits is everywhere all the time. If the spirits cannot come when they are called their influence will act for them. In all sickness evil spirits should be driven away first. This may be done by making smoke with the sage. There are other things which will drive away certain kinds of evil spirits. Then when the evil spirits are driven away, the good spirits should be invoked. This may be done by singing songs. A medicineman will know What song to sing. He learns what song to sing when he has his vision. It may be that he learns the song from someone else. It may be that his song is not good. If his song is not good, then another medicineman may be able to sing the right song. If medicinemen use the same medicines they should sing songs alike. Evil spirits cause all diseases. Good