With the final defeat of Rîm-Sin by Samsu-iluna it is probable that Elam ceased to be a thorn in the side of the kings of Babylon and that she made no further attempts to extend her authority beyond her own frontiers. But no sooner had Samsu-iluna freed his country from all danger from this quarter than he found himself faced by a new foe, before whom the dynasty eventually succumbed. This fact we learn from the unpublished chronicle to which reference has already been made, and the name of this new foe, as supplied by the chronicle, will render it necessary to revise all current schemes of Babylonian chronology. Samsu-iluna’s new foe was no other than Iluma-ilu, the first king of the Second Dynasty, and, so far from having been regarded as Samsu-iluna’s contemporary, hitherto it has been imagined that he ascended the throne of Babylon one hundred and eighteen years after Samsu-iluna’s death. The new information supplied by the chronicle thus proves two important facts: first, that the Second Dynasty, instead of immediately succeeding the First Dynasty, was partly contemporary with it; second, that during the period in which the two dynasties were contemporary they were at war with one another, the Second Dynasty gradually encroaching on the territory of the First Dynasty, until it eventually succeeded in capturing Babylon and in getting the whole of the country under its control. We also learn from the new chronicle that this Second Dynasty at first established itself in “the Country of the Sea,” that is to say, the districts in the extreme south of Babylonia bordering on the Persian Gulf, and afterwards extended its borders northward until it gradually absorbed the whole of Babylonia. Before discussing the other facts supplied by the new chronicle, with regard to the rise and growth of the Country of the Sea, whose kings formed the so-called “Second Dynasty,” it will be well to refer briefly to the sources from which the information on the period to be found in the current histories is derived.