Constantine lived seven years after he had completed the dedication of his new city, and died in peace and prosperity on the 22nd of May, A.D. 337, received on his death-bed into that Christian Church on whose verge he had lingered during the last half of his life. By his will he left his realm to be divided among his sons and nephews; but a rapid succession of murders and civil wars thinned out the imperial house, and ended in the concentration of the whole empire from the Forth to the Tigris under the sceptre of Constantius II., the second son of the great emperor. The Roman world was not yet quite ripe for a permanent division; it was still possible to manage it from a single centre, for by some strange chance the barbarian invasions which had troubled the third century had ceased for a time, and the Romans were untroubled, save by some minor bickerings on the Rhine and the Euphrates. Constantius II., an administrator of some ability, but gloomy, suspicious, and unsympathetic, was able to devote his leisure to ecclesiastical controversies, and to dishonour himself by starting the first persecution of Christian by Christian that the world had seen. The crisis in the history of the empire was not destined to fall in his day, nor in the short reign of his cousin and successor, Julian, the amiable and cultured, but entirely wrongheaded, pagan zealot, who strove to put back the clock of time and restore the worship of the ancient gods of Greece. Both Constantius and Julian, if asked whence danger to the empire might be expected, would have pointed eastward, to the Mesopotamian frontier, where their great enemy, Sapor King of Persia, strove, with no very great success, to break through the line of Roman fortresses that protected Syria and Asia Minor. But it was not in the east that the impending storm was really brewing. It was from the north that mischief was to come. [Illustration] Gothic Idols. (_From the Column of Arcadius._)