with a design taken from the emblem of the city and its god, was thus a fitting object for his inscription. By depositing it in Ningirsu's temple, he not only sought to secure the favour of the local god by his piety, but he left in his city a permanent record of his own dominion. Of Lugal-shag-engur we know as yet nothing beyond his name, and the fact that he was patesi of Lagash at the time of Mesilim, but the latter ruler has left a more enduring mark upon history. For a later patesi of Lagash, Entemena, when giving a historical summary of the relations which existed between his own city and the neighbouring city of Umma, begins his account with the period of Mesilim, and furnishes additional testimony to the part which this early king of Kish played in the local affairs of southern Babylonia.[19] From Mesilim's own inscription on the mace-head, we have already seen that he interested himself in the repair of temples and in fostering the local cults of cities in the south; from Entemena's record we learn that his activities also extended to adjusting the political relations between the separate states. The proximity of Umma to Lagash brought the two cities into constant rivalry, and, although they were separated by the Shatt el-Hai,[20] their respective territories were not always confined to their own sides of the stream. During the reign of Mesilim the antagonism between the cities came to a head, and, in order to prevent the outbreak of hostilities, Mesilim stepped in as arbitrator, possibly at the invitation of the two disputants. The point at issue concerned the boundary-line between the territories of Lagash and Umma, and Mesilim, as arbitrator, drew up a treaty of delimitation.