The chronology of Herodotus, which is on all accounts to be preferred, assigns the commencement of the Assyrian Empire to about B.C. 1250, or a little earlier, and gives the monarchy a duration of nearly 650 years from that time. The Assyrians, according to him, held the undisputed supremacy of Western Asia for 520 years, or from about B.C. 1250 to about B.C. 730--after which they maintained themselves in an independent but less exalted position for about 130 years longer, till nearly the close of the seventh century before our era. These dates are not indeed to be accepted without reserve; but they are approximate to the truth, and are, at any rate, greatly preferable to those of Ctesias. The chronology of Berosus was, apparently, not very different from that of Herodotus. There can be no reasonable doubt that his sixth Babylonian dynasty represents the line of kings which ruled in Babylon during the period known as that of the Old Empire in Assyria. Now this line, which was Semitic, appears to have been placed upon the throne by the Assyrians, and to have been among the first results of that conquering energy which the Assyrians at this time began to develop. Its commencement should therefore synchronize with the foundation of an Assyrian Empire. The views of Berosus on this latter subject may be gathered from what he says of the former. Now the scheme of Berosus gave as the date of the establishment of this dynasty about the year B.C. 1300; and as Berosus undoubtedly placed the fall of the Assyrian Empire in B.C. 625, it may be concluded, and with a near approach to certainty, that he would have assigned the Empire a duration of about 675 years, making it commence with the beginning of the thirteenth century before our era, and terminate midway in the latter half of the seventh. If this be a true account of the ideas of Berosus, his scheme of Assyrian chronology would have differed only slightly from that of Herodotus; as will be seen if we place the two schemes side by side. [Illustration: PAGE 371]