The change of rule was not well received by the new subjects of Parthia, least of all by the Greeks and Macedonians of the upper provinces, who sent embassy after embassy to Demetrius. In 140 B.C. he marched into Mesopotamia, and thence by Babylon to the upper provinces. He was well received by the natives, and even the small native states made common cause with him against the proud barbarians, whose neighbourhood they felt to be oppressive. He was joined by the Persians and Elymæans, and the Bactrians helped him by a diversion, appearing now for the first time as an independent people. At first things went well, and the Parthians were defeated in several battles, but in Media in 139 B.C. Demetrius was surprised by the lieutenant of Mithridates during negotiations for peace; his forces were annihilated, and he himself was taken prisoner and dragged in chains through the provinces that had joined his cause. The Parthian king received his captive with favour and assigned him a residence and suitable establishment in Hyrcania. He even gave him his daughter Rhodogune, and promised to restore him to his kingdom, but this plan was interrupted by death. [Sidenote: [138 B.C.]] Mithridates’ latest campaign was against the king of Elymais; the rich temples yielding him a booty of ten thousand talents (£2,258,000 or $11,290,000). The country was brought under Parthia, but continued to have its own kings. The coins make it likely that Mithridates simply set up a new dynasty, a branch of his own house. Mithridates died at a good old age in 138 B.C., or a little later. His memory was reverenced almost equally with that of the founder of his house, but his real glory was much greater, for it was he who made Parthia a great power. He is praised as a just and humane ruler, who, having become lord of all the lands from the Indian Caucasus to the Euphrates, introduced among the Parthians the best institutions of each country, and so became the legislator of his nation. PARTHIAN “KINGDOMS”