Again, just as Gibil-Nusku entails the invocation of a large variety of solar deities, so Ea, as the water-god, leads to the introduction of various water-gods and spirits. Perhaps the most prominent of these is the god Naru, whose name, signifying 'river,'[380] is clearly the personification of the watery element, though of the minor bodies of water. Next in order comes the goddess Nin-akha-kuddu.[381] She is invoked as 'goddess of purification.' From her association in several passages with the great deep, and with the city of Eridu--metaphorically used for the great deep--one may be permitted to conclude that she, too, was conceived of as a water-god or a water-spirit. She is 'the lady of spells,' who is asked to take possession of the body of the sufferer, and thus free him from the control of demons or witches. By the side of this goddess, Gula, 'the great physician,' is often appealed to. Again, the demons being in some cases the ghosts of the departed, or such as hover around graves, Nin-kigal, or Allatu, the mistress of the lower world, is an important ally, whose aid is desired in the struggle against the evil spirits. Lastly, it is interesting to note that Izdubar, or Gilgamesh, the famous hero of the great Babylonian epic, occurs also in incantations[382]--a welcome indication of the antiquity of the myth, and the proof, at the same time, that the epic is built on a foundation of myth. From the mythological side, Gilgamesh appears to be a solar deity. The connection of a solar god with fire would account for his appearance in the magical texts. However obscure some of the points connected with the gods of the incantation texts may be, so much is certain, that the two factors of water and fire, and the part played by these elements in the ceremonies, control and explain the choice of most of the gods and goddesses introduced, though--be it expressly noted--not of all occurring in the magical texts. The Ritual and Formulas. Coming to the incantations themselves, they can best be characterized as appeals interspersed with words of a more or less mystic character. The force and efficacy of the incantation lie not so much in the meaning of the words uttered, as in the simple fact that they _are_ to be uttered. These incantations were combined into a ritual, and indications were given of the occasions on which the incantations were to be used. An analysis of one of these rituals will serve to illustrate this branch of the religious literature of the Babylonians. I choose for this purpose the series known as Maklu, _i.e._, Burning,[383] the interpretation of which has been so considerably advanced by Dr. Tallqvist's admirable work. The first tablet of the series opens with an invocation to the gods of night. After complaining of his sad condition, the bewitched individual continues as follows: