---- Cath. of Saint Front, 3, 4, 5, 6, 7, 8, 36 note 108, 105, 114, Figs. 1, 2. ---- Saint Étienne, 6, 7. Peristeroma--Ch., 5 note 15, 8 note 25. Perpignan--Cath. Saint Jean, 148. Perugia--Cath., 104 note 279. Peterborough--Cath., 89, 90, 91, 92, 99, Fig. 39. Petit Quévilly, Le--Ch., 65, 66. Pirna--Hauptkirche, 150 note 51. Poitiers--Cath., 48 note 160, 51, 104. ---- Notre Dame-la-Grande, 24, 125 note 1. ---- Saint Hilaire, 11, 12, 36 note 105, 112 note 22, 125 note 1, Figs. 7, 8. ---- Sainte Radegonde, 48 note 160, 51, 57. Poitou--21. ---- School of, 16, 23 _et seq._ Pontaubert--Ch., 39 note 121. Pontoise--Saint Maclou, 168, 174. Pontorson--Ch., 77. Prenzlau--Marienkirche, 104 note 279. Preuilly-sur-Claise--Ch., 162. Provence--School of, 16, 17 _et seq._, 125. Provins--Saint Quiriace, 72, 140, 152, 153, Fig. 31. Puiseaux--Ch., 108 note 9. Puy, Le--Cath. of Notre Dame, 9, 10, 11, 12, 14, 35, Figs. 5, 6. Quedlinburg--Saint Wipertus (near), 159. Querqueville--Ch., 110 note 13. Quimperlé-Sainte Croix, 159 note 7. Radiating Chapels--Vaulting of, 183. Ravenna--Palace of Theodoric, 24 note 63. ---- San Vitale, 2, 162. Reims--Cath., 79, 80, 143, 152, 153. ---- Saint Jacques, 69, Fig. 29. ---- Saint Nicaise, 182. ---- Saint Remi, 37, 112 note 23, 135 note 25, 136, 141, 143 note 36, 154, 168, 173, 176, 177, 178, 184, Figs. 64, 83, 87. Rhenish Provinces--School of, 26 note 77, 41. Ribe--Cath., 71. Ribs--transverse, function of, 99. ---- use of wall, in Gothic ribbed vaulting, 136. ---- ridge, in Anjou, 49. ---- impost level in chevet vaults, 153. Rieux-Merinville--Ch., 160. Ripon--Cath., 82. Rivolta-d’Adda--Ch., 41, 44, 58 note 176. Roberval--Ch., 108 note 7. Rochester--Cath., 26 note 74, 69 note 192. Rolduc--Ch., 110. Rome--Basilica of Maxentius, 36, 78 note 217. ---- Domus Augustana, 2. ---- Lateran Baptistry, 25. ---- Palace of the Caesars, 2. ---- Santa Costanza, 159. ---- San Giovanni in Laterano, 158. ---- S. M. sopra Minerva, 138. ---- Stadium of Domitian, 158, 159 note 6. ---- Temple di Siepe, 129. ---- Thermae of Caracalla, 2. Ronceray--Ch., 36. Rosheim--Ch., 42 note 136. Rouen--Cath., 26 note 74, 79, 100, 143, 171, 174. ---- Lycée Corneille, 111. ---- Saint Maclou, 121. Rue--Chapel of Saint Esprit, 95. Rys--Ch., 108 note 9. Saint Aignan--Ch., 54 note 171. Saint Astier--Ch., 6. Saint Avit-Sénieur--Ch., 6, 50. Saint Barnabas--Ch., 5 note 15. Saint Benoît sur Loire--Ch., 18 note 39, 22, 30, 125 note 2, Fig. 13. Saint Bertrand-des-Comminges--Ch., 81. Saint Denis--Ab. Ch., 66, 67, 75, 78, 169, 174. Saint Dié--42 note 136. Saint Gabriel--Ch., 64. Saint Genou--Ch., 18 note 39, 22, 30. Saint Germer-de-Fly--Ch., 43, 67, 78, 79, 101, 133, 135, 136, 137, 138, 140, 141, 153, 154, 168, Fig. 63. _Sainte Chapelle_, 137. Saint Gilles--Ch., 99 note 275. Saint Guilhem-du-Désert--Ch., 19, 20. Saint Hilaire--Saint Florent.--Ch., 51.