Hadrian, 117-138 A. D.—Antoninus Pius, 138-161 A. D.—Marcus Aurelius, 161-180 A. D.—Commodus, 180-192 A. D.—Septimius Severus, 193-211 A. D.—Alexander Severus, 222-235 A. D.—Gordian I, 238 A. D.—Gallienus, 260-268 A. D.—Aurelian, 270-275 A. D.—Tacitus, 275 A. D.—Suetonius, about 70 or 75 to about 150 A. D.—Florus, time of Hadrian—Justin, time of Hadrian (?)—Liciniauus, time of Antoninus Pius—Ampelius, time of Antoninus Pius (?)—Salvius Julianus, time of Hadrian—Sextus Pomponius, time of Antoninus Pius—Gaius, about 110-180 A. D.—Quintus Cervidius Scævola, time of Antoninus and M. Aurelius—Papinianus, time of Commodus and Septimius Severus—Terentius Scaurus, time of Hadrian—Terentianus Maurus and Juba, before 200 A. D.—Aero, about 200 A. D.—Porphyrio, about 200 A. D.—Festus, early in the third century. [Sidenote: Latin literature after Trajan.] It was not until the fourth century after Christ that a new capital of the Roman empire was founded at Constantinople; but long before that time the real centre of gravity of the empire was shifting toward the east. In Asia, Egypt, and Africa, were the great sources of wealth and the great masses of population. While Rome was growing from the position of a small Italian town to that of the ruler of the world, and even for some time after the establishment of the empire, the Romans had possessed a strong national feeling, and Roman literature, although it began with imitation of the works of the Greeks, had been a national literature. But with the second century a change, which had been in preparation since the days of Augustus, became apparent. Rome was no longer the centre of the world in all things, though still the seat of government. Men of distinction spent at least a great part of their time in the smaller towns of Italy, and the leaders of thought and creators of literature no longer found it necessary to take up their residence at Rome. Then too, the progress of Christianity brought with it a new literature which was not national, but Christian. These causes, with others less obvious, but perhaps no less potent, led to the rapid decay of the national literature. It is our task from this point to trace the progress of this decay, and at the same time to record the rise of Christian literature in the Latin language. Works of great literary importance are few in this period, and the history of literature can be treated in less detail than heretofore.