Ammianus has marked the chronology of this year by three signs, which do not perfectly coincide with each other, or with the series of the history. 1. The corn was ripe when Sapor invaded Mesopotamia: "Cum jam stipula flavente turgerent;" a circumstance which, in the latitude of Aleppo, would naturally refer us to the month of April or May. See Harmer's Observations on Scripture, vol. i. p. 41. Shaw's Travels, p. 335, edit. 4to. 2. The progress of Sapor was checked by the overflowing of the Euphrates, which generally happens in July and August. Plin. Hist. Nat. v. 21. Viaggi di Pietro della Va1le, tom. i. p. 696. 3. When Sapor had taken Amida, after a siege of seventy-three days, the autumn was far advanced: "Autumno praecipiti haedorumque improbo sidere exorto." To reconcile these apparent contradictions, we must allow for some delay in the Persian king, some inaccuracy in the historian, and some disorder in the seasons.