List of Plates i. Athens : The Parthenon, begun in 447 B.C. IL Rome: Basilica of Maxentius, c. A.D, 310-20. in. Ravenna: S. Apollinare Nuovo, early 6th century. iv. Ravenna: S. Vitale, completed in 547. v. Aachen: Cathedral (the chapel of Charlemagne's Palace), consecrated in 805. r S, Maria de Naranco, c. 848. VII* J vin. Earl's Barton, Northamptonshire, loth or early nth century. ix. Castle Hedinghajtn, Essex, i2th century. x. Winchester Cathedral: North transept, c. 1080-90. xi. Durham Cathedral: The nave, early I2th century. xna, Jumieges: Abbey Church, begun c. 1040. xnb. Toulouse: St. Sernin, the nave, early I2th century. XIH. Cluny : Abbey Church from the east, late nth century. xiv. Toulouse: St. Sernin. Choir consecrated in 1096. xv. Angouleme Cathedral, early I2th century. xvi. Perigueux: St. Front, c. 1125-50. XVH. Vezelay : Church of the Magdalen, early I2th century. xvni. Autun: St. Lazare, early I2th century. xix. St. Gilles, c. 1150, xx. Cologne : Holy Apostles, c. 1200. xxi. Worms Cathedral, c. 1175-1250. xxa. Milan: S. Ambrogio, I2th century. xxin. Florence: S. Miniato al Monte, nth century and later. xxiv. St. Denis: Choir ambulatory, 1140-44* xxv. Laon Cathedral: Nave, last quarter of the I2th century. xxvi. Paris : Notre Dame, nave, designed c. 1185. xxvn. Amiens Cathedral: Nave, begun in 1220. xxvin. Rheims Cathedral: The west front, begun c. 1225. xi