But it is especially after death that this animal nature of the soul is manifested. During life, this characteristic is partially veiled, as it were, by the very form of the human body. But when death has once set it free, it becomes itself again. Among the Omaha, in at least two of the Buffalo clans, it is believed that the souls of the dead go to rejoin the buffalo, their ancestors.[857] The Hopi are divided into a certain number of clans, whose ancestors were animals or beings with animal forms. Now Schoolcraft tells us that they say that at death, they take their original form again; each becomes a bear or deer, according to the clan to which he belongs.[858] Very frequently the soul is believed to reincarnate itself in the body of an animal.[859] It is probably from this that the widely-spread doctrine of metempsychosis was derived. We have already seen how hard pressed Tylor is to account for it.[860] If the soul is an essentially human principle, what could be more curious than this marked predilection which it shows, in so large a number of societies, for the animal form? On the other hand, everything is explained if, by its very constitution, the soul is closely related to the animal, for in that case, when it returns to the animal world at the close of this life, it is only returning to its real nature. Thus the generality of the belief in metempsychosis is a new proof that the constituent elements of the idea of the soul have been taken largely from the animal kingdom, as is presupposed by the theory which we have just set forth. IV Thus the notion of the soul is a particular application of the beliefs relative to sacred beings. This is the explanation of the religious character which this idea has had from the moment when it first appeared in history, and which it still retains to-day. In fact, the soul has always been considered a sacred thing; on this ground, it is opposed to the body which is, in itself, profane. It is not merely distinguished from its material envelope as the inside from the outside; it is not merely represented as made out of a more subtle and fluid matter; but more than this, it inspires those sentiments which are everywhere reserved for that which is divine. If it is not made into a god, it is at least regarded as a spark of the divinity. This essential characteristic would be inexplicable if the idea of the soul were only a pre-scientific solution given to the problem of dreams; for there is nothing in the dream to awaken religious emotions, so the cause by which these are explained could not have such a character. But if the soul is a part of the divine substance, it represents something not ourselves that is within us; if it is made of the same mental matter as the sacred beings, it is natural that it should become the object of the same sentiments.