Not less definite is the evidence of the monuments that the pre-eminence of Assyria over Upper Asia cannot have commenced in the year 2189 or 1913 B.C., as Ctesias asserts, or as may be assumed from his data, nor in 1273, as has been deduced from the statements of Berosus, nor finally in the year 1234, according to Herodotus' statements (p. 27). Though we are able to find only approximately the dates of the kings of Assyria, whose names and deeds we have passed in review, the result is, nevertheless, that the power of Assyria in the fifteenth and fourteenth centuries did not go far beyond the native country--that her forces by no means surpassed those of Babylon--that precisely in the thirteenth and twelfth centuries B.C. the kingdom of Babylon was at least as strong as that of Assyria--that even towards the close of the twelfth century Tiglath Pilesar I. could gain no success against Babylon--that his successors sought to establish peaceful relations with Babylonia. There is just as little reason to maintain the period of 520 years which Herodotus allows for the Assyrian empire over Asia. This cannot in any case be assumed earlier than the date of Tiglath Pilesar I., who did at least cross the Euphrates and enter Northern Syria. The beginning of this empire would, therefore, be about 1130 B.C., not 1234 B.C. The date also which Herodotus gives for the close of this empire (before 700 B.C.) cannot, as will be shown, be maintained. According to this datum the decline and fall of Assyria must have began with the period in which, as a fact, she rose to the proudest height and extended her power to the widest extent. The period of 520 years can only be kept artificially by reckoning it upwards from the year 607 B.C., the year of the overthrow of the Assyrian empire; then it brings us from this date to 1127 B.C., _i.e._ to the time of Tiglath Pilesar I. But we saw that the conquests of Tiglath Pilesar did not extend very far, that his successes west of the Euphrates were of a transitory nature; in no case could a dominion of Assyria over Babylon be dated from his reign.