However that may be, we see the Lydians already an organised state, even while the Phrygian power was still at its height, before the Cimmerian storm had burst. As with the Hittites in past time, their constitution was partly that of confederate or vassal states governed by hereditary chiefs owning allegiance to the ruling power at Sardis, and partly feudal,[107] the chieftains owing their military service and their tribal forces to the king, while the common people appear as serfs. In this society the king was both head of the priesthood and chief commander of the vassal chiefs in war.[108] The emblem of sovereignty was a double axe, which the Greeks said was derived from Hercules himself.[109] From among the mass of legend which characterise the earliest efforts of Greek history, it might be possible to trace many suggestions of the influence of the Hittite civilisation; but the lack of local monuments (a fact due doubtless to physical conditions), to reveal to us the dominant features of Lydian art, restrains us from this aspect of inquiry. One point at any rate is established, that not merely was the district of Lydia at one time embraced within the Hittite empire,[110] but that it became imbued then with many features of social organisation which it carried down from the old world to the new. Our main inquiry being based on the monuments of the Hittite lands, we cannot dwell upon the stories of the Lydian kings, of their desperate struggles with the Cimmerians following the downfall of Phrygia, nor of their warfare with the Medes, with whom, after the fall of Nineveh in 607 B.C., they ultimately divided Asia Minor, with the Halys as the boundary between them. The names of two kings are worthy of mention as historical landmarks; the one is Gyges, first of the Mermnad dynasty in the middle of the seventh century B.C., contemporary of Assurbanipal, the Assyrian, and of Psamtek, Pharaoh of Egypt, with both of whom he held relations of diplomatic character. The other is Crœsus, the last and greatest of them all, who, having established his power eastward to the Halys, turned his attention to those rich Greek cities which had sprung up in the West. [Illustration: PLATE XXVI VIEW NEAR SARDIS, THE ANCIENT CAPITAL OF LYDIA The valley of the Pactolus, a tributary of the Hermus, which rising on Mt. Tmolus flowed past the temple of Kybele at Sardis.]