Cyrus and the Fall of Babylon.--Cyrus, like his fathers, was king of Anzan in Elam, not of Persia. Anzan had been first occupied, it would appear, by his great-grandfather Teispes the Achaemenian. The conquest of Astyages and of his capital Ekbatana took place in B.C. 549, and a year or two later Cyrus obtained possession of Persia. In B.C. 538 the population in the south of Babylonia revolted, and Cyrus entered the country, where he was assisted by the native party which was hostile to Nabonidos. The Babylonian army was stationed in northern Babylonia, but it was utterly defeated at Opis in the month of Tammuz or June, and on the 14th of the month Sippara opened its gates to the conqueror. Gobryas, the governor of Kurdistan, was then sent by Cyrus against Babylon, which also opened its gates 'without fighting,' and Nabonidos, who had concealed himself, was taken prisoner. Gobryas placed the temple of Bel under a guard, and the daily services there proceeded as usual. The contract-tablets show that there was equally little cessation of business among the mercantile classes. But it was not until the 3rd of Marchesvan (October) that Cyrus himself arrived in Babylon and proclaimed a general amnesty, which was communicated by Gobryas to 'all the province of Babylon' of which he had been made governor. Shortly afterwards the wife of Nabonidos died; lamentation was made for her throughout Babylonia, and Kambyses, the son of Cyrus, conducted her funeral in one of the Babylonian temples. [Illustration: THE CYLINDER INSCRIPTION OF CYRUS.] Meanwhile Cyrus had assumed the title of 'King of Babylon,' thus claiming to be the legitimate descendant of the ancient Babylonian kings. He announced himself as the devoted worshipper of Bel and Nebo, who by the command of Merodach had overthrown the sacrilegious usurper Nabonidos, and he and his son accordingly offered sacrifices to ten times the usual amount in the Babylonian temples, and restored the images of the gods to their ancient shrines. At the same time he allowed the foreign populations who had been deported to Babylonia to return to their homes along with the statues of their gods. Among these foreign populations, as we know from the Old Testament, were the Jews. Belshazzar.--One of the sons of Nabonidos was Belshazzar, who is mentioned in the contract-tablets as well as by his father. He seems to have been 'the king's son' who commanded the Babylonian army in its camp near Sippara. If so, it would appear that he had died or been slain before the final invasion of Babylonia by Cyrus, since no reference is made to him on that occasion, and the pretenders who afterwards rose against Darius in Babylonia called themselves not Belshazzar but 'Nebuchadrezzar, the son of Nabonidos.'