Even before they could decipher their meaning Assyriologists had compared, from the palaeographic point of view, the different varieties of the written character known as _cuneiform_--a character which lent itself for some two thousand years, to the notation of the five or six successive languages, at least, in which the inhabitants of Western Asia expressed their thoughts. These wedge-shaped characters are found in their most primitive and undeveloped forms in the mounds dotted over the southern districts of Mesopotamia, in company with the earliest signs of those types which are especially characteristic of the architecture, ornamentation, and plastic figuration of Assyria. There is another particular in which the monumental records and the biblical tradition are in accord. During those obscure centuries that saw the work sketched out from which the civilization of the Tigris and Euphrates basin was, in time, to be developed, the Chaldaean population was not homogeneous; the country was inhabited by tribes who had neither a common origin nor a common language. This we are told in Genesis. The earliest chiefs to build cities in Shinar are there personified in the person of Nimrod, who is the son of Cush, and the grandson of Ham. He and his people must be placed, therefore, in the same family as the Ethiopians, the Egyptians, and the Libyans, the Canaanites and the Phoenicians.[31] A little lower down in the same genealogical table we find attached to the posterity of Shem that Asshur who, as we are told in the verses quoted above, left the plains of Shinar in order to found Nineveh in the upper country.[32] So, too, it was from Ur of the Chaldees that Terah, another descendant of Shem, and, through Abraham, the ancestor of the Jewish people, came up into Canaan.[33] The world has, unhappily, lost the work of Berosus, the Babylonish priest, who, under the Seleucidae, did for Chaldaea what Manetho was doing almost at the same moment for Egypt.[34] Berosus compiled the history of Chaldaea from the national chronicles and traditions. The loss of his work is still more to be lamented than that of Manetho. The wedges may never, perhaps, be read with as much certainty as the hieroglyphs; the remains of Chaldaeo-Assyrian antiquity are much less copious and well preserved than those of the Egyptian civilization, while the gap in the existing documents are more frequent and of a different character. And yet much precious information, especially in these latter days, has been drawn from those fragments of his work which have come down to us. In one of these we find the following evidence as to the mixture of races: "At first there were at Babylon a great number of men belonging to the different nationalities that colonized Chaldaea."[35]