Suggestions in design : being a comprehensive series of original sketches in various styles of ornament : arranged for application in the decorative and constructive arts (1880)
Leighton, John, 1822-1912, Colling, James Kellaway · London : Blackie and Son · leaf 128
t Fig. 191. These forms Fig. 192. periods was the form of the pointed arch Fig. 198. mark the Early English period. The next pro- gression was to throw a general arch over the two lights, and to pierce the intermediate space, first with a simple itself. When first adopted it was seldom circle, and… … Decorated, they became of a more moderate “ tracery,” and groups of two, three, four, pitch; while in the third, the Perpendicular, or more lights were associated together they became so flat as to necessitate the use under one general arch, the mullions at the of lead for covering them. head of…
Decoration and ornament
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