We arrive at the following conclusion:--If, as eminent psychical researchers now postulate (and as many of them believe), there are active and intelligent disembodied beings able to act psychically upon embodied men in much the same way that embodied men are known ordinarily to act psychically upon one another, then there is every logical and common-sense reason for extending this psychical hypothesis so as to include the ancient, mediaeval, and modern theory of magic and witchcraft, namely, that what embodied men and women can do in magical ways, as for example in hypnotism, disembodied men and women can do. Further, if fairies, in accord with reliable testimony from educated and critical percipients, hypothetically exist (whatever their nature may be), they may be possessed of magical powers of the same sort, and so can cast spells upon or possess living human beings as Celts believe and assert. And this hypothesis coincides in most essentials with the one we used as a basis for this discussion, that, in accordance with the Melanesian doctrine of control of ghosts and spirits with their inherent _mana_, magical acts are possible.[186] This in turn applied to the Celts amounts to a hypothetical confirmation of the ancient druidical doctrine that through control of fairies or demons (daemons) Druids or magicians could control the weather and natural phenomena connected with vegetable and animal processes, could cast spells, could divine the future, could execute all magical acts. EXORCISMS According to the testimony of anthropology, exorcism as a religious practice has always flourished wherever animistic beliefs have furnished it with the necessary environment; and not only has exorcism been a fundamental part of religious practices in past ages, but it is so at the present day. Among Christians, Celtic and non-Celtic, among followers of all the great historical religions, and especially among East Indians, Chinese, American Red Men, Polynesians, and most Africans, the expelling of demons from men and women, from animals, from inanimate objects, and from places, is sanctioned by well-established rituals. Exorcism as applied to the human race is thus defined in the _Dictionnaire de Théologie_ (Roman Catholic) by L'Abbé Bergier:--'_Exorcism_--conjuration, prayer to God, and command given to the demon to depart from the body of persons possessed.' The same authority thus logically defends its practice by the Church:--'Far from condemning the opinion of the Jews, who attributed to the demon certain maladies, that divine Master confirmed it.'[187] And whenever exorcism of this character has been or is now generally practised, the professional exorcist appears as a personage just as necessary to society as the modern doctor, since nearly all diseases were and to some extent are still, both among Christians and non-Christians, very often thought to be the result of demon-possession.