+297+. It is by virtue of their divine character that stones came to be used as altars.[549] As things divine in themselves or as representing a deity they receive the blood of the sacred (that is, divine) sacrificial animal, which is the food of the god. Originally a part of the blood is applied to the stone, and the rest poured out or eaten (as sacred food) by the worshiper. In process of time, when the god has been divorced from the stone, the latter becomes a table on which the victim is offered;[550] the old conception survives in the custom of slaying the victim by the side of the altar, and applying the blood to the horns of the altar as a representative part of the sacred structure. In the late Jewish ritual this application of blood is interpreted as a purification of the altar from ceremonial defilements.[551] +298+. Originally, it seems, it was only natural stones that were sacred or divine and were employed as representatives of deities; but by a natural process of thought the custom arose of using artificial stones in the same way. By means of certain ceremonies, it was held, the deity could be induced to accept an altar or a house, or to take up his abode in an image, as a spirit is introduced by the savage into a fetish object.[552] The basis of this sort of procedure is first the belief in the amenableness of the deity to magical laws, and, later, the belief in his friendly disposition, his willingness to accede to the wishes of his worshipers provided they offer the proper tribute; but even in very late ceremonies a trace of the magical element remains.