From references to different cities in the early texts, it is possible to form from their context, a very fair idea of what the Sumerians themselves regarded as the limits of their own land. For instance, from the Tello inscriptions there is no doubt that Lagash was in Sumer. Thus the god Ningirsu, when informing Gudea, patesi of Lagash, that prosperity shall follow the building of E-ninnû, promises that oil and wool shall be abundant in Sumer;[17] the temple itself, which was in Lagash, is recorded to have been built of bricks of Sumer;[18] and, after the building of the temple was finished, Gudea prays that the land may rest in security, and that Sumer may be at the head of the countries.[19] Again, Lugal-zaggisi, who styles himself King of the Land, i.e. the land of Sumer,[20] mentions among cities subject to him, Erech, Ur, Larsa, and Umma,[21] proving that they were regarded as Sumerian towns. The city of Kesh, whose goddess Ninkharsag is mentioned on the Stele of the Vultures, with the gods of Sumerian towns as guaranteeing a treaty between Lagash and Umma,[22] was probably in Sumer, and so, too, must have been Isin, which gave a line of rulers to Sumer and Akkad in succession to Ur; about Eridu in the extreme south there could be no two opinions. On the other hand, in addition to the city of Agade or Akkad, Sippar, Kish, Opis, Cutha, Babylon and Borsippa are certainly situated beyond the limits of Sumer and belong to the land of Akkad in the north. Between the two groups lay Nippur, rather nearer to the southern than to the northern cities, and occupying the unique position of a central shrine. There is little doubt that the town was originally regarded as within the limits of Sumer, but from its close association with any claimant to the hegemony, whether in Sumer or in Akkad, it acquired in course of time a certain intermediate position, on the boundary line, as it were, between the two countries.