sacrifice and prayer are the resource of the pious and enlightened portion of the community, while magic is the refuge of the superstitious and ignorant. But when, still later, the conception of the elemental forces as personal agents is giving way to the recognition of natural law; then magic, based as it implicitly is on the idea of a necessary and invariable sequence of cause and effect, independent of personal will, reappears from the obscurity and discredit into which it had fallen, and by investigating the causal sequences in nature, directly prepares the way for science. Alchemy leads up to chemistry. The notion of a man-god or of a human being endowed with divine or supernatural powers, belongs essentially to that earlier period of religious history in which gods and men are still viewed as beings of much the same order, and before they are divided by the impassable gulf which, to later thought, opens out between them. Strange, therefore, as may seem to us the idea of a god incarnate in human form, it has nothing very startling for early man, who sees in a man-god or a god-man only a higher degree of the same supernatural powers which he arrogates in perfect good faith to himself. Such incarnate gods are common in rude society. The incarnation may be temporary or permanent. In the former case, the incarnation—commonly known as inspiration or possession—reveals itself in supernatural knowledge rather than in supernatural power. In other words, its usual manifestations are divination and prophesy rather than miracles. On the other hand, when the incarnation is not merely temporary, when the divine spirit has permanently taken up its abode in a human body, the god-man is usually expected to vindicate his character by working miracles. Only we have to remember that by men at this stage of thought miracles are not considered as breaches of natural law. Not conceiving the existence of natural law, primitive man cannot conceive a breach of it. A miracle is to him merely an unusually striking manifestation of a common power.