As soon as the first transports of victory had subsided, Sapor was at leisure to reflect, that to chastise a disobedient city, he had lost the flower of his troops, and the most favorable season for conquest. 59 Thirty thousand of his veterans had fallen under the walls of Amida, during the continuance of a siege, which lasted seventy-three days; and the disappointed monarch returned to his capital with affected triumph and secret mortification. It is more than probable, that the inconstancy of his Barbarian allies was tempted to relinquish a war in which they had encountered such unexpected difficulties; and that the aged king of the Chionites, satiated with revenge, turned away with horror from a scene of action where he had been deprived of the hope of his family and nation. The strength as well as the spirit of the army with which Sapor took the field in the ensuing spring was no longer equal to the unbounded views of his ambition. Instead of aspiring to the conquest of the East, he was obliged to content himself with the reduction of two fortified cities of Mesopotamia, Singara and Bezabde; 60 the one situate in the midst of a sandy desert, the other in a small peninsula, surrounded almost on every side by the deep and rapid stream of the Tigris. Five Roman legions, of the diminutive size to which they had been reduced in the age of Constantine, were made prisoners, and sent into remote captivity on the extreme confines of Persia. After dismantling the walls of Singara, the conqueror abandoned that solitary and sequestered place; but he carefully restored the fortifications of Bezabde, and fixed in that important post a garrison or colony of veterans; amply supplied with every means of defence, and animated by high sentiments of honor and fidelity. Towards the close of the campaign, the arms of Sapor incurred some disgrace by an unsuccessful enterprise against Virtha, or Tecrit, a strong, or, as it was universally esteemed till the age of Tamerlane, an impregnable fortress of the independent Arabs. 61 6111