[185] Ruprich-Robert, pl. LXXXVIII.
[186] Ruprich-Robert, pl. LXXXVII.
[187] Flying-buttresses had to be added not long after their construction, to keep them from falling.
[188] Even these vaults have suffered from reconstruction in the thirteenth century.
[189] See Moore, p. 130 et seq. for discussion of this point.
[190] A later instance does appear and this, too, on a very large scale in the rebuilt choir vaults of Beauvais cathedral (1284), but the six-part vaults of this church are entirely due to the subdivision of four-part rectangular vaults in order to obtain greater stability.
[191] Among the more important examples not mentioned are: Laon (Aisne), Cath.; Mantes (Seine-et-Oise), Cath.; Dijon (Côte-d’Or), Notre Dame, etc.
[192] Other examples are: Lincoln, Cath. choir; [(Fig. 35)] Durham, Cath. east transept; Rochester, Cath. presbytery, (Moore, Mediaeval Church Architecture of England, pl. XVIII), etc.
[193] Porter, Cons. of Lombard and Gothic Vaults, Figs. 58-60.
[194] Other Italian examples are: Casamari, Ch.; San Galgano, Ch.; San Martino, Ch.; etc.