We thus obtain from native Elamite sources no evidence that Elam exercised control over a portion of Babylonia for any considerable period after the fall of Ur. The invasion of the country, which resulted in the deportation of Ibi-Sin, no doubt freed Elam for a time from foreign control, and may well have led to the establishment of a number of independent states under native Elamite rulers. In addition to Kudur-Nankhundi we may provisionally assign to this period Kisâri, king of Gankhar,[15] a district which had previously been held by the kings of Ur. But it would seem that the Elamite states, after their long period of subjection, were not sufficiently strong or united to follow up the success achieved by Anshan. The dynastic chronicle from Nippur records that Isin took the kingdom of Ur, and we may assume that Ishbi-Ura was not long in re-establishing the kingdom of Sumer and Akkad with his own city as its capital. The Elamite invasion may well have been confined to the south of Sumer, and among the cities that had been left unaffected the most powerful would naturally assert itself. Evidence that Ishbi-Ura soon freed himself from Elamite interference may possibly be seen in a reference to him upon an Assyrian omen-tablet, which states that "he had no rivals."[16] The phrase is certainly vague, but it at least bears witness to the reputation which his achievements secured for him in the traditions of a later age. We possess few records of the kings of Isin, and the greater part of our information concerning the dynasty is furnished by the Nippur dynastic list. From this document we know that it lasted for two hundred and twenty-five years and six months, and consisted of sixteen kings. These fall naturally into four groups. The first group comprises the family of Ishbi-Ura, four of whose direct descendants succeeded him upon the throne, their reigns together with his occupying a period of ninety-four years. The second group consists of Ur-Ninib and three of his descendants, who reigned for sixty-one years. Then followed a period of thirty-six and a half years, during which no less than five kings ruled in Isin, and, since none of them were related, it was clearly a time of great political unrest. A more stable condition of things appears to have prevailed during the closing period of thirty-four years, occupied by the reigns of Sin-magir and his son Damik-ilishu, under whom the dynasty came to an end. A number of tablets dated during the Dynasty of Isin have been found at Niffer, and at least one at Abû Habba, while a few short votive inscriptions of some of the kings themselves have been recovered on these two sites and also at Ur and Babylon. References to four of the kings of Isin in later Babylonian traditions complete the material from which a knowledge of the period can be obtained. The information derived from these rather scanty sources, combined with the succession of rulers