How to study architecture; by Charles H. Caffin ... an attempt to trace the evolution of architecture as the product and expression of successive phases of civilisation (1917)
Caffin, Charles Henry, 1854-1918 · New York, Dodd, Mead and Company · leaf 336
le of concentration of vaulting strainsupon four points; (d) the development of a buttress sys-tem to reinforce the main parts of the strain, and (e)the development of window openings both as to their sizeand ornamentation. Periods of Gothic.—The period of Gothic covers thethirteenth, fourteenth,… … SCULPTURED DETAIL From Doorway of Amiexs Cathedral. P. 269
Architecture
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