Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 152
a*. … Tfcarifr,. XX V// A BROACH SPIRE The broach spire in Fig. 132 is an octagonal pyramid, set in the usual way on a squaretower of the same diameter. Its plan is a regular octagon inscribed in a square bycutting off the corners, that is, the octagon made by the overlapping of two concentricsquares.…
Perspective
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