The secondary position held by the female deities in the Babylonian pantheon has been repeatedly referred to. This trait of the religion finds an illustration not only in the 'shadowy' character of the consorts of the gods, but also in the manner in which goddesses, originally distinct from one another and enjoying an existence independent of any male consort, lose their individuality, as it were, and become merely so many forms of one and the same deity. Indeed, as we approach the moment when the gods of the Babylonian pantheon are ranged into a system, the tendency becomes pronounced to recognize only _one_ goddess, representative of the principle of generation--one 'great mother,' endowed with a variety of traits according to the political and social conditions prevailing at different times in Babylonia and Assyria. In the earliest period which we are now considering, we can still distinguish a number of goddesses who afterwards became merged into this one great goddess. These are Ninni (or Innanna), Nana, and Anunit. Ninni and Innanna are names that appear to have a common origin.[63] Both embody the notion of 'ladyship.' The worship of this goddess centers in the district of Lagash. Ur-Bau (c. 3000 B.C.), who addresses her as 'glorious and supreme,' builds a temple in her honor at Gishgalla, and Gudea refers to a temple known as E-anna, _i.e._, heavenly house in Girsu.[64] For Gudea, Ninni is the "mistress of the world." Another ruler of Lagash whose name is doubtfully read as E-dingir-ra-na-gin,[65] but who is even earlier than Ur-Bau, declares that he has been 'called' by Innanna to the throne. She is mentioned by the side of Nin-khar-sag. We are still in the period where local associations formed a controlling factor in ensuring the popularity of a deity, and while the goddesses attached to the gods of the important centers are still differentiated, the tendency already exists to designate the female consorts simply as the 'goddess,'--to apply to all, the traits that may once have been peculiar to one. As we pass from one age to the other, there is an increasing difficulty in keeping the various local 'goddesses' apart. Even the names become interchangeable; and since these goddesses all represented essentially the same principle of generation and fertility, it was natural that with the union of the Babylonian states they should become merged into one great mother-goddess. A 'local' goddess who retains rather more of her individuality than others, is Nana.