cases not as yet provided for would arise, and new formulas with new instructions would be produced; or the exorcisers at a certain temple would learn of remedies tried elsewhere, and would embody them in their own special code. In short, the growth of these incantation 'rituals' was probably similar to the manner in which, on the basis of actual practice, religious codes grew up around the sanctuaries of ancient Israel,--a process that terminated in the production of the various codes and rituals constituting the legal documents embodied in the Pentateuch. The prominence given to Ea and to his favorite seat, the city of Eridu, in the incantations suggests the theory that many of our texts are to be ultimately traced to the temple of Ea, that once stood at Eridu. In that case an additional proof would be furnished of the great antiquity of the use of incantations in Babylonia. We must sharply distinguish however, as already emphasized, between the origin and the present form of the rituals. Again, those parts of a ritual in which Gibil, or Nusku, appears prominently would most naturally be produced by priests connected with a temple sacred to the one or the other of these gods. The practice of incantation, however, being common to all parts of Babylonia, we can hardly suppose that any temple should have existed which did not have its exorcising formulas. In the combination of these formulas into a ritual, due consideration would naturally be had to the special gods invoked, the obvious result of which would be to produce the long lists of deities that are often embodied in a single incantation. The details of this process can of course no longer be discerned, but the inevitable tendency would be towards increasing complications. The effort would be made to collect everything, and from all known quarters. Hence the heterogeneous elements to be detected in the texts, and which, while adding to their interest, also increase the difficulty of their interpretation. In consequence of the presence of such heterogeneous elements, it is difficult to determine within an incantation series any guiding principles that prompted the collectors. Still we can often distinguish large groups in a series that belong together. So we have whole series of addresses to the fire-god ending with incantations, and again a series of descriptions of the group of seven spirits serving a similar purpose as introductions to incantations, but we cannot see on what grounds the transition from one subject to the other takes place. Indeed the transitions are generally marked by their abruptness.