His duty it is not only to protect from evil, but to counteract it.

He has charms and incantations which he offers for the production of beneficial natural phenomena.
Magic for such purposes is regarded by the Indian as essential to the existence of man.

Magic, however, as a black art is the most heinous crime which he can conceive.

The difference between the two consists mainly in their purpose; the manipulations are substantially the same, so are the objects.

To know those details is one of the attributes of the shamans.
The latter constitute a circle of their own,--a cluster of adepts, nominally in the arts of healing, but really in the arts of magic.