Alas! all these efforts were wasted. Thirteen years later the Emperor Julian was killed in his famous expedition against Ctesiphon. Jovian, in order to extricate the army, was compelled to sign an ignominious treaty; and one of the chief conditions that Sapor insisted upon was that Nisibis should be ceded into his hands. The inhabitants implored the emperor's pity. Let him but give them leave to defend themselves, they would ask for no external aid. But Jovian was cowed by defeat, and afraid of offending the conqueror: and the townsfolk, well aware that they could expect no mercy from a potentate whom they had thrice discomfited, withdrew with all their possessions and left an empty city in the Persians' hands. Nisibis under its new masters proved as impregnable a fortress as ever; but it won a new title to fame while under Sassanian rule. In the year 489 the Monophysite Emperor Zeno suppressed the great College of Edessa on the ground that it was tainted with Nestorianism. The Christian bishop of Nisibis was at that time a certain Bar Soma; a prelate of the type which asserted itself more prominently in the Middle Ages, in such men as Henry Despenser the martial bishop of Norwich, or Carillo the turbulent primate of Toledo. Bar Soma was a personage of some consequence at the Persian Court, and in fact seems to have held a position somewhat akin to Warden of the Marches. He had himself been a scholar at Edessa, and had remained on intimate terms with most of the professors; and he conceived the idea of re-establishing the college in his own cathedral town. The college thus refounded prospered exceedingly, and remained for many generations the most important educational centre in the East. It boasted about 1000 students (for Oriental students pack close), and though its course was primarily theological, yet it did much to keep alive profane knowledge as well. Thus it forms a not unimportant link between ancient and modern learning. The wisdom of the Greeks, which it received from Edessa, it handed on in its turn to Baghdad and Cordova and Salamanca; and perhaps even Oxford and Cambridge and Paris and Padua may owe to the college of Nisibis more than they are quite aware. There may well be good booty at Nisibin for an archæologist with a turn for excavation, for the mounds and hillocks which encircle it are manifestly piled on ancient walls. But there is little enough above ground--a bridge which is so badly battered that the carts prefer fording the river; a fragment or two of old walling; and a group of five monolithic columns, about two-fifths buried in débris, which are known as the columns of weighing, and which probably formed part of the peristyle of the forum. There remains, however, one special monument of even more interest to the ecclesiologist than to the antiquarian--the Church of St. James of Nisibis, one of the oldest Christian edifices in the world. [Illustration: _CHURCH OF SAINT JAMES AT NISIBIS_]