Ornamental drawing, and architectural design. With notes, historical and practical. Upwards of 200 illustrations (1857)
Burn, Robert Scott · London, Ward and Lock · leaf 22
of which are found at the corners of a square, as a' b' c d\ fig. 25. the side of which is equal to the distance between the extreme points, as a c or b d. The radius of the larger arcs is equal to half the side, as a A, c g, &c. The ornament known as the quatre-foil, and which forms Example 22,… … The radii of the circles described from the points d c g f is equal to half the side, as dm,fn, &c. An exemplification of this is shown in the gothic perforated parapet which forms
Architecture · Decoration and ornament
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
