[52] Choisy, II, p. 205, Fig. 13. [53] Lasteyrie, p. 250, Fig. 241. [54] See statement to that effect in Rivoira, II, p. 106. [55] See Dehio and von Bezold, p. 260. [56] Ruprich-Robert, p. 8, Fig. 45, and Reber, Fig. 235. [57] Lasteyrie, p. 455, Fig. 473. [58] Lasteyrie, p. 456, Fig. 474, also Saint Jouin-de-Marnes (Deux-Sèvres), Baudot and Perrault-Dabot, II, pl. 32, and Nouaille (Vienne), Ch., Baudot and Perrault-Dabot, II, pl. 37. [59] For example, the aisle vaults seldom carry the tile of the roofs outside of Provence and Auvergne. [60] This arrangement is general in the school and may be understood by referring to the illustration of Melle, Saint Pierre, Lasteyrie, p. 455, Fig. 473. A number of churches which are exceptions to this rule have already been noted under Provence (see pp. 21, 22). [61] See Lasteyrie, p. 454, Fig. 471. [62] The three western bays of the church are early twelfth century and have transverse arches. [63] Rivoira (Rivoira, I, p. 97) says that such arches were used beneath groined vaults as early as the eighth century in the palace of Theodoric at Ravenna, and gives as tenth century examples (p. 176) the aisles of Sant’ Eustorgio at Milan and the nave and aisles of S.S. Felice e Fortunato, at Vicenza, and as examples of the early eleventh century, the nave and aisles of San Babila, also at Milan. [64] It is a question whether the transverse arches actually carried much or any of the weight of the vault. (See discussion of this point as regards crypts in Porter, Construction of Lombard and Gothic Vaults, pp. 17-18.) They did, however, strengthen the church by tying together the piers and walls besides saving centering as above stated. [65] Lasteyrie, p. 455, Fig. 472. [66] The influence of the Poitou system was quite extensive, however, as is shown by the little church of Saint Loup-de-Naud (Seine-et-Marne) (eleventh and twelfth centuries), Choisy, II, p. 207, Fig. 15. [67] See Choisy, II, p. 210. The great objection to this is that they are not found in the neighboring provinces, in which much the same reason for having them must have existed. [68] See Lasteyrie, pp. 388-391, for account of the latter. [69] Rivoira, II, p. 283, Fig. 727. [70] Michel I, p. 444, Fig. 208. [71] Enlart I, p. 255, Fig. 94. [72] Lasteyrie, p. 330, Fig. 354. [73] Rivoira, II, p. 47, Fig. 410. [74] Other examples showing extent of the method are, Barletta cathedral in Italy, and Rochester Cathedral (twelfth century) in England, while Rouen and Meaux cathedrals furnish Gothic instances. See also Enlart, I, p. 257, note 1. [75] It is also worthy of note as showing the architectural influence of Lombardy and the Rhenish provinces upon Auvergne, that Chatel-Montagne has the alternate system of supports, a Lombard-Rhenish-Norman characteristic rarely found outside of these schools.