It was an exciting chase of king by king, in which each covered the ground by incredible exertions, shedding their slower-going followers as they went, past Rhagae (Rai) and the Caspian gates, till early one morning Alexander came in sight of the broken train which still clung to the fallen king.
At Rai about thirty of his shorter works are said to have been composed.
For vei Lmple, the sand dunes of North America and those of western am rope are widely separated in geographical position and there- ge~ e in floristic composition, yet they are related by common rai:
His later life was spent in various parts of the Moslem world, in Aleppo with Saif-ud-Daula (to whom he dedicated the Book of Songs), in Rai with the Buyid vizier Ibn `Abbad and elsewhere.
Epiphanes (163) he conquered Media, where he refounded the town"of Rhagae (Rai near Teheran) under the name of Arsacia; and about 141 he invaded Babylonia.