Below the depth of two metres from the surface of the mound are found strata in which Elamite objects and materials are, no longer mixed with the remains of later ages, but here the latest Elamite remains are found mingled with objects and materials dating from the earliest periods of Elam’s history. The use of un-burnt bricks as the principal material for buildings erected on the mound in all ages has been another cause of this mixture of materials, for it has little power of resistance to water, and a considerable rain-storm will wash away large portions of the surface and cause the remains of different strata to be mixed indiscriminately with one another. In proportion as the trenches were cut deeper into the mound the strata which were laid bare showed remains of earlier ages than those in the upper layers, though here also remains of different periods are considerably mixed. The only building that has hitherto been discovered at Susa by M. de Morgan, the ground plan of which was in a comparatively good state of preservation, was a small temple of the god Shu-shinak, and this owed its preservation to the fact that it was not built of unburnt brick, but was largely composed of burnt brick and plaques and tiles of enamelled terra-cotta. But although the diggings of M. de Morgan at Susa have so far afforded little information on the subject of Elamite architecture, the separate objects found have enabled us to gain considerable knowledge of the artistic achievements of the race during the different periods of its existence. Moreover, the stelæ and stone records that have been recovered present a wealth of material for the study of the long history of Elam and of the kings who ruled in Babylonia during the earliest ages. [Illustration: 163.jpg GENERAL VIEW OF THE EXCAVATIONS ON THE KASR AT BABYLON.] Showing the depth in the mound to which the diggings are carried. The most famous of M. de Morgan’s recent finds is the long code of laws drawn up by Hammurabi, the greatest king of the First Dynasty of Babylon.[1] This was engraved upon a huge block of black diorite, and was found in the tell of the acropolis in the winter of 1901-2. This document in itself has entirely revolutionized current theories as to the growth and origin of the principal ancient legal codes. It proves that Babylonia was the fountainhead from which many later races borrowed portions of their legislative systems. Moreover, the subjects dealt with in this code of laws embrace most of the different classes of the Babylonian people, and it regulates their duties and their relations to one another in their ordinary occupations and pursuits. It therefore throws much light upon early Babylonian life and customs, and we shall return to it in the chapter dealing with these subjects.