Andrew Lang - Native American Indians - Bull roarers
Type of Spiritual Experience
The effect is described but no specifics, so the type is other.
A description of the experience
Andrew Lang - The Making of Religion – Chapter V – Crystal Visions, Savage and Civilised
Captain Bourke discovered that the Apaches, like the Greeks, Australians, Africans, Maoris, and many other, races, use the bull-roarer, turndun, or rhombos a piece of wood which, being whirled round, causes a strange windy roar in their mystic ceremonies. The wide use of the rhombos was known to Captain Bourke.