London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 231
arch divided into twoparts (see ^fig. 114.), and these again sub-divided, with quatrefoiled circles cut in the flat space betweenthe heads. Here we clearly discern the germ of the subsequentgeometrical tracery. This is still farther developed in the mag-nificent windows of the chapter-house… … of Gothic Architecture. 219 instead of being cut into a solid space, merely touch at the points,and do not extend the full thickness of the wall. From thelightness of the shafts, or mullions, of these windows, and their of
Architecture
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