An introduction to the study of Gothic architecture (1877)
Parker, John Henry, 1806-1884 · Oxford: J. Parker and Co. · leaf 165
with the points of thecusps formed into a roundmoulding, or bowtell (105) ; sometimes trefoilsor spherical triangles, ofwhich we have a veryrich example in the southtransept of WestminsterAbbey, where the sphe-rical triangle is made toinclose a foliated circle (106) : the same gradual 105.…
Architecture, Gothic
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