The schism of the Donatists, with which the treatises in the present volume are concerned, arose indirectly out of the persecution under Diocletian at the beginning of the fourth century. At that time Mensurius, bishop of Carthage, and his archdeacon Cæcilianus, had endeavoured to check the fanatical spirit in which many of the Christians courted martyrdom; and consequently, on the death of Mensur...