Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 707
ing, Observations on the Classification \and Details of the Architecture of theMiddle Jiges. By E. B. Lamb, Esq. Architect.(continued from p, 141.)The Third Class commenced about 1377, and continued till 1460. Inthe first division of this class the equilateral arch was given up for onestruck with… … ter of the whole of this class, and the mouldings, became gradually morecomplex. The windows, for some time, retained the simple arch, the Architecture of the Middle Ages. 209 compound arch only being used in small openings. Windows were di-vided in their height by transoms, and sometimes columns…
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