In the vaulting of a nave the breadth across is about twice the breadth of the aisles, so that the nave bays are not square, but rectangular.
Plate XI., Fig. 4, and Plate XII., Fig. 2, show _lierne_-vaulting, having _lierne-ribs_, the short ribs joining and supporting all the ascending ribs as h, k, l, m, g.
Plate XII., Figs. 2 and 3, are lierne vaults. That shown in Fig. 3 is under the belfry of a church tower at Coventry, with circular opening for hoisting the bells.
The detail at B shows the method of collecting the three ribs into one at the _springers_ in the corners A, B, C, D, by small arches in the tracery of ribs.
Plate XII., Fig. 1, shows fan-vaulting having no ribs. The lines shown indicate mouldings on the masonry imitating ribs. The structure is built up of slabs of stone, accurately joined together forming concave half-cones, their vertices being the springers of the vault. The dotted lines show some of the jointing; the other lines represent the imitation ribs. The crown of the vault is the flat surface gh, gi, generally richly ornamented.
Buttress, Pl. V., Fig. 9; Pl. VII., Fig. 10
Chevron, Pl. I., Fig. 4; Pl. III., Fig. 6
Crocket, Pl. V., Figs, 1, 2; Pl. VII., Figs. 10, 11, 14
Finial, Pl. V., Fig. 2; Pl. VII., Figs. 6, 10, 11; Pl. VIII., Fig. 6
Geometrical Tracery, Pl. V., Fig. 5; Pl. VII., Fig. 1
Gothic Arch, Pl. IV., Fig. 2; Pl. V., Figs. 4, 5
Lierne-Vaulting, Pl. XI., Fig. 4; Pl. XII., Figs. 2, 3
Open Timber Roof, Pl. X., Figs. 3 to 8, p. 67
Parapet, Pl. VI., Fig. 6; Pl. IX., Figs. 1 to 4
Pinnacle, Pl. VI., Fig. 6; Pl. VII., Fig. 10; Pl. IX., Figs. 1, 2, 3
Principal and Principal Rafter, Pl. X., all Figs.
Rafters, Common, Pl. X., Figs. 1, 2, 4, 5, 7, 8
Respond, Pl. III., Fig. 3; Pl. XI., Fig. 2, p. 31
String Courses and Dripstones, Pl. IV., Fig. 4; Pl. V., Fig. 6; Pl. VII., Fig. 12; Pl. VIII., Fig. 8
Tracery Development, Pl. V., Figs. 4, 5; Pl. VII., Figs. 1 to 5
Triquetra, Pl. I., Fig. 8; Pl. III., Fig. 9
Tudor Arch, Pl. VIII., Fig. 4; Pl. IX., Fig. 6
Vaulting Ribs, Pl. XII., Figs. 2, 3; Pl. XI., Figs. 3, 4
Web (Vaulting), Pl. XI., Figs. 3, 4, p. 76
PRINTED IN GREAT BRITAIN BY BILLING AND SONS, LTD., GUILDFORD AND ESHER
End of the Project Gutenberg EBook of English Church Architecture of the Middle Ages, by A. Freeman Smith