In Europe the dominant religion has proscribed witchcraft with terrors spiritual and physical, which have emphasized its separation and intensified its spiritual aspect. The judicial records are full of stories of initiation to the Black Art that begin by the formal renunciation of Christian worship and baptism. The novice tramples upon symbols of the Christian faith, or otherwise treats them with indignity. He utters incantations with appropriate rites to call up the devil. That gentleman then appears to receive his formal profession of allegiance, admit him ceremonially into his band of worshippers, and tutor him in the methods of his art. That the confessions of this procedure were not wholly imaginary, and dictated by the orthodox functionaries who examined the tortured victim, is rendered probable from the fact that down to the present day, in many continental countries, if not in the British Islands, the peasant witch enters upon her trade by a rite recalling its main features. It would be easy to expand the list. Enough has, however, been said to show that over a wide area of the world and in the most various stages of civilization what we call supernatural beings are concerned with the preparation of the magician’s career, and that the Arunta beliefs do not differ in this respect from those current among many other peoples. In none of the foregoing cases does the shaman or magician as such exercise the functions of priest. He offers no sacrifices, he addresses no prayers on behalf of the community to the divinities. {112} He performs wonders by the aid of the spirits; but the spirits who first invade and then help him are by no means everywhere those who are the object of worship. It is not my intention to discuss the psychological and physiological aspects of the phenomena. They recall the phenomena of “conversion” among ourselves. Occurring, as they usually do, at or shortly after the commencement of adult life, they display the effervescence of puberty, accentuated by the neurotic peculiarities of the individual, acted upon, directed and controlled by the social environment. As in the case of “conversion,” too, they are liable to become epidemic, particularly at times of social and political crisis, where feeling in the tribe is more than commonly excited.