believing that the chief aim of ἁγνείαι, or purifications, was to {105} drive the evil spirits out of certain kinds of food.[105.1] The deep animistic colouring that the conception we are analysing came at a very early time to acquire may be responsible for a very important event in the history of religion: the evolution, namely, of the dualistic principle, the idea of the antagonism between good and evil spirits, the germ of which we can already detect in the animistic stage which may have preceded the faith in high personal gods. If the impure things and acts are impregnated with evil spirits, it is natural to suppose that the pure are the abode of the good, and these are contrary the one to the other. It may have required a very long period for a clear belief in the good spirit to crystallise; for to the very primitive mind all spirits are mysteriously dangerous, even the ghosts of one’s dearest kinsmen. Still, the ancestral spirits make on the whole for righteousness, and can be given the position of guardians of {106} the purification code. Thus the New Caledonians avert the wrath of the ghosts of their ancestors by washing, fasting, and chastity:[106.1] the ancient Greek might pray or sacrifice to a vague animistic company of θεοὶ Ἀποτρόπαιοι or Μειλίχιοι, regarded perhaps as ghosts of the lower world, to avert the impure omen or to wash off the taint of blood. Finally, the conception of purity comes under the dominion of the higher faith in a personal god. In Greece, Apollo and Zeus attach to themselves the ritual and the associated ideas; in Persia the whole complex code of purity is established by Ahura Mazda; in Israel by Jahvé, who enforces the minutest details of the law with insistence on the purity of God.[106.2] In Babylonian as in Vedic religion, the fire-god is pre-eminently the purifier, a name which is attached particularly to Agni, and we find in the Babylonian liturgical texts the {107} prayer,[107.1] “May the torch of the shining fire-god cleanse me.” Nor does Buddhism appear to differ from Leviticus or the Zend-Avesta in respect of the complications of its cathartic rules and the importance it attached to them. The Buddhist missionary, I-Tsing, exhorts the faithful to observe the elaborate prescriptions of the Buddha, “because,” as he naively puts it, “gods and spirits get disgusted with our ways of wearing garments and eating food.” With this abundance of testimony before us, we are all the more surprised to find that very little is forthcoming from the records of our own ancestral paganism. We can scarcely believe that our Teutonic ancestors were destitute of the idea of lustration, and that their cleanliness and chastity, attested by the Roman writers and still more clearly by their own sagas, were virtues of purely secular origin. And in fact we have certain records of Teutonic ritual that seem to point to cathartic ideas: “After the goddess Nerthus had gone on her annual