James George Frazer,
The Golden Bough: A Study in Magic and Religion…
“ When he wishes his bush soul to go out on its rambles, he drinks a magic potion, the secret of which has been handed down from time immemorial, and some of which is always kept ready for use in an ancient earthen pot set apart for the purpose. No sooner has he drunk the mystic draught than his bush soul escapes from him and floats away invisible through the town into the forest. There it begins to swell and, safe in the shadow of the trees, takes on the shape of the man's animal double, it may be an elephant, a leopard, a buffalo, a wild boar, or a crocodile. ”
