empire fell before the attack of the Persians in 558 B.C., the beginning of the Median empire would fall in the year 714 B.C. (558 + 156), and consequently the beginning of the Assyrian kingdom in the year 1234 B.C. (714 + 520), _i.e._ four or five decades later than Berosus puts the death of Semiramis. For the date of the beginning of the Assyrian dominion Herodotus and Berosus would thus be nearly in agreement. It has been assumed that the 45 kings whom the latter represents as following Semiramis were kings of Assyria, who ruled at the same time over Babylon, and were thus regarded as a Babylonian dynasty. This agreement would be the more definite if it could be supposed that, according to the view of Herodotus, the beginning of the 156 years which he gives to the Median empire was separated by an interval of some decades from the date of their liberation from the power of the Assyrians. In this case the empire of the Assyrians over Asia would not have commenced very long before the year 1273 B.C., and would have extended from that date over Babylonia. In complete contradiction to this are the statements of Ctesias, which carry us back beyond 2000 B.C. for the commencement of the Assyrian empire. They cannot be brought into harmony with the statements of Herodotus, even if the time allotted by Ctesias to the Assyrian empire (1306 years) is reckoned from the established date of the conquest of Nineveh by the Medes and Babylonians (607 B.C.). The result of such a calculation (607 + 1306) carries us back to 1913 B.C., a date far higher than Herodotus and Berosus give.