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not without hesitation, to the feeling now confirmed in the legions that the Empire was too vast to be held by a single person, takes his brother for his colleague, and divides, not, truly speaking, their authority, but their attention, between the east and the west. To his brother Valens he assigns the extremely vague "Præfecture of the East, from the lower Danube to the confines of Persia," while for his own immediate government he reserves the "warlike prefectures of Illyricum, Italy, and Gaul, from the extremity of Greece to the Caledonian rampart, and from the rampart of Caledonia to the foot of Mount Atlas." That is to say, in less poetical cadence, (Gibbon had better have put his history into hexameters at once,) Valentinian kept under his own watch the whole of Roman Europe and Africa, and left Lydia and Caucasus to his brother. Lydia and Caucasus never did, and never could, form an Eastern Empire,—they were merely outside dependencies, usefui for taxation in peace, dangerous by their multitudes in war. There never was, from the seventh century before Christ to the seventh after Christ, but one Roman Empire, which meant, the power over humanity of such men as Cincinnatus and Agricola; it expires as the race and temper of these expire; the nominal extent of it, or brilliancy at any