Witchcraft introduces us to a class of popular superstitions entirely different from those connected with Fairies. Fairies, water-horses, and kindred supernatural beings were distinct from the Evil Spirits that gave to witches their unhallowed powers. They could not be compelled or conjured by mortals to appear when wanted, or enter into contracts of service. The Powers of Darkness, on the other hand, were always at the service of their votaries, and, by means of charms and incantations known to the initiated, were made to lend their aid in any scheme of malevolence.