Elsewhere in the Eastern world are many early churches of which even the enumeration would exceed the limits of this work. Salonica counts a number of basilicas and several domical churches. The church of +St. George+, now a mosque, is of early date and thoroughly Roman in plan and section, of the same class with the Pantheon and the tomb of Helena, in both of which a massive circular wall is lightened by eight niches. At Angora (Ancyra), Hierapolis, Pergamus, and other points in Asia Minor; in Egypt, Nubia, and Algiers, are many examples of both circular and basilican edifices of the early centuries of Christianity. In Constantinople there remains but a single representative of the basilican type, the church of +St. John Studius+, now the Emir Akhor mosque. +MONUMENTS+: ROME: 4th century: St. Peter’s, Sta. Costanza, 330?; Sta. Pudentiana, 335 (rebuilt 1598); tomb of St. Helena; Baptistery of Constantine; St. Paul’s beyond the Walls, 386; St. John Lateran (wholly remodelled in modern times). 5th century: Baptistery of St. John Lateran; Sta. Sabina, 425; Sta. Maria Maggiore, 432; S. Pietro in Vincoli, 442 (greatly altered in modern times). 6th century: S. Lorenzo, 580 (the older portion in two stories); SS. Cosmo e Damiano. 7th century: Sta. Agnese, 625; S. Giorgio in Velabro, 682. 8th century: Sta. Maria in Cosmedin; S. Crisogono. 9th century: S. Nereo ed Achilleo; Sta. Prassede; Sta. Maria in Dominica. 12th and 13th centuries: S. Clemente, 1118; Sta. Maria in Trastevere; S. Lorenzo (nave); Sta. Maria in Ara Coeli. RAVENNA: Baptistery of S. John, 400 (?); S. Francesco; S. Giovanni Evangelista, 425; Sta. Agata, 430; S. Giovanni Battista, 439; tomb of Galla Placidia, 450; S. Apollinare Nuovo, 500-520; S. Apollinare in Classe, 538; St. Victor; Sta. Maria in Cosmedin (the Arian Baptistery); tomb of Theodoric (Sta. Maria della Rotonda, a decagonal two-storied mausoleum, with a low dome cut from a single stone 36 feet in diameter), 530-540. ITALY IN GENERAL: basilica at Parenzo, 6th century; cathedral and Sta. Fosca at Torcello, 640-700; at Naples Sta. Restituta, 7th century; others, mostly of 10th-13th centuries, at Murano near Venice, at Florence (S. Miniato), Spoleto, Toscanella, etc.; baptisteries at Asti, Florence, Nocera dei Pagani, and other places. IN SYRIA AND THE EAST: basilicas of the Nativity at Bethlehem, of the Sepulchre and of the Ascension at Jerusalem; also polygonal church on Temple platform; these all of 4th century. Basilicas at Bakouzah, Hass, Kelat Seman, Kalb Louzeh, Rouheiha, Tourmanin, etc.; circular churches, tombs, and baptisteries at Bozrah, Ezra, Hass, Kelat Seman, Rouheiha, etc.; all these 4th-8th centuries. Churches at Constantinople (Holy Wisdom, St. John Studius, etc.), Hierapolis, Pergamus, and Thessalonica (St. Demetrius, “Eski Djuma”); in Egypt and Nubia (Djemla, Announa, Ibreem, Siout, etc.); at Orléansville in Algeria.