others, more cruelly, were nailed with the head downwards, and kept alive until they were destroyed by starving on the cross itself."--(Eusebius, "Eccl. Hist.," Book 8, ch. 8.) 19. A modern writer, whose tendency ever was to minimize the extent of Christian persecution, is Edward Gibbon. His account of the conditions prevailing during this period of Diocletian outrage is as follows: "The magistrates were commanded to employ every method of severity which might reclaim them from their odious superstition, and oblige them to return to the established worship of the gods. This rigorous order was extended, by a subsequent edict, to the whole body of Christians, who were exposed to a violent and general persecution. Instead of those salutary restraints which had required the direct and solemn testimony of an accuser, it became the duty as well as the interest of the imperial officers to discover, to pursue, and to torment the most obnoxious among the faithful. Heavy penalties were denounced against all who should presume to save a proscribed sectary from the just indignation of the gods and of the emperors."--(Gibbon, "Decline and Fall of the Roman Empire," ch. XVI.) 20. So general was the Diocletian persecution, and so destructive its effect, that at its cessation the Christian Church was thought to be forever extinct. Monuments were raised to commemorate the emperor's zeal as a persecutor, notably two pillars erected in Spain. On one of them is an inscription extolling the mighty Diocletian "_For having extinguished the name of Christians who brought the Republic to ruin_." A second pillar commemorates the reign of Diocletian, and honors the imperator "_for having everywhere abolished the superstition of Christ; for having extended the worship of the gods_." A medal struck in honor of Diocletian bears the inscription "_The name of Christian being extinguished_."--(Milner, "Church History," Cent. IV, ch. 1:38.) To the fallacy of these assumptions subsequent events testify. 21. The Diocletian oppression was the last of the great persecutions brought by pagan Rome against Christianity as a whole. A stupendous change, amounting to a revolution, now appears in the affairs of the Church. Constantine, known in history as Constantine the Great, became emperor of Rome A. D. 306, and reigned 31 years. Early in his reign he espoused the hitherto unpopular cause of the Christians, and took the Church under official protection. A legend gained currency that the emperor's conversion was due to a supernatural manifestation, whereby he saw a luminous cross appear in the heavens with the inscription, "By this sign, conquer." The genuineness of this alleged manifestation is doubtful, and the evidence of history is against it. The incident is here mentioned to show the means devised to make Christianity popular at the time.