Ammian. xxxi. 8, 9. Jerom (tom. i. p. 26 [tom. i. p. 342, ed. Vallars.]) enumerates the nations, and marks a calamitous period of twenty years. This epistle to Heliodorus was composed in the year 397 (Tillemont, Mem. Eccles. tom. xii. p. 645).