After the adoption of Christianity the purposes to which the Christian buildings were applied was certainly very different from that of their prototypes, but the architecture was the same. The circular domed edifices raised by the Romans as mausoleums were imitated by the Christians in their circular baptisteries; while the style of construction employed in the great basilica or pillared hall lighted by a clerestory, was exactly copied in the nave or large vessel of the Christian Church. The continuity of style is complete; there is no break. The same Corinthian or Ionic pillars, the same entablatures, the same roofs and vault are used in both. So close is the resemblance between the Christian circular baptisteries (several of which we shall meet with in Provence) and Roman circular monuments, that the former are generally regarded as Roman temples converted to Christian uses. The early churches are usually called basilicas, and have hitherto been supposed to be derived from the Roman basilica. But Professor Baldwin Brown, in his recent interesting and learned work “From Schola to Cathedral,” endeavours to prove that this is not the case. The basilica had no doubt the form of a pillared hall with central and side aisles, the former lit by a clerestory, but it had no apse, or if there was one it did not occupy the prominent position of that feature in the early churches. The origin of the apse, which was an essential feature in all churches, containing as it did the seat of the Bishops in the centre and those of the presbyters on either side, is attributed by Professor Baldwin Brown to the memorial cellae erected by Pagans and Christians alike in the cemeteries. These often assumed a domed or apsidal form, and were much resorted to on saints’ natal days, for commemorative festivals and religious ceremonies, held in the cemeteries above the spot where the martyr’s bones reposed in the catacomb below. At a later time, when these relics had been transferred to crypts below the altars of the churches, the apse was a feature naturally introduced to complete the resemblance to the original tomb. As regards the nave, the scholae or halls of meeting of private societies are regarded by Professor Baldwin Brown as the principal model of the early church. Under the emperors the Christians were allowed to form burial guilds, and these, like other guilds, had their scholae. The schola often had an apse containing the seat of the president; and the above author is of opinion that the large churches built after the conversion of Constantine are rather enlarged scholae than copies of basilicas.