However, the spiritual beings of whom we have been speaking up to the present are as yet only secondary personages. They are either evil-working geniuses who belong to magic rather than religion, or else, being attached to determined individuals or places, they cannot make their influence felt except within a circle of a very limited radius. So they can only be the objects of private and local rites. But after the idea has once been established, it naturally spreads to the higher spheres of the religious life, and thus mythical personalities of a superior order are born. Though the ceremonies of the different clans differ from one another, they all belong to the same religion, none the less; also, a certain number of essential similarities exist between them. Since all the clans are only parts of one and the same tribe, the unity of the tribe cannot fail to make itself felt through this diversity of particular cults. In fact, there is no totemic group that does not have churinga and bull-roarers, and these are used everywhere in the same way. The organization of the tribe into phratries, matrimonial classes and clans, and the exogamic interdictions attached to them, are veritable tribal institutions. The initiation celebrations all include certain fundamental practices, the extraction of a tooth, circumcision, subincision, etc., which do not vary with the totems within a single tribe. The uniformity on this point is the more easily established as the initiation always takes place in the presence of the tribe, or at least, before an assembly to which the different clans have been summoned. The reason for this is that the object of the initiation is to introduce the neophyte into the religious life, not merely of the clan into which he was born, but of the tribe as a whole; so it is necessary that the various aspects of the tribal religion be represented before him and take place, in a way, under his very eyes. It is on this occasion that the moral and religious unity of the tribe is affirmed the best.