In parts of Southern California also the idea of the guardian spirit does not seem to be well developed. Here the method of acquiring shamanistic power is almost exclusively by dreams; but among the Mohave and probably other Colorado river tribes, myths, and not a personal meeting or communion with an individual spirit, constitute the subject of the dreams. The Mohave shamans believe that they were present at the beginning of the world, before mankind had separated into tribes. They were with the great leader and almost creator, Mastamho. They saw him singing, blowing, and rubbing over the body of a sick man, if their own power be that of curing disease, and from Mastamho they thus learned the actions and speeches which constitute their power. Before him they showed what they had learned from him, and by him were designated those who had seen and learned most and those of less power. Each man saw only the shamanistic actions relating to his particular power, whether these had reference to the curing of disease, to love, to war, or to some other activity. The Mohave universally speak of having dreamed these scenes, just as each narrator affirms his knowledge of non-shamanistic myths and of ceremonies to have been individually derived from dreaming them. It is probable that to a certain extent this is true. That it is not entirely true becomes evident when the Mohave with equal unanimity state that these dreams were dreamed by them before birth. In other words, their statement that they have dreamed such experiences is to be interpreted mainly as a belief that they as individuals were present in spirit form at the beginning of the world, at the time when it took shape and everything was ordained, and when all power, shamanistic and otherwise, was established and allotted. It is obvious that with this conception as the basis of their whole religion, there is but little room for any beliefs as to guardian spirits of the usual form. Of course there is nothing that limits the shaman to one spirit, and among many or most tribes, such as the Maidu, a powerful medicine-man may possess a great number.