Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 168
etermination of the arch curves, it is safer to construct the points inde-pendently than to follow round from one to another, and better to use this last methodfor a verification. It will be seen, too, that the tangents, being 450 lines in the plane ofthe wall face or parallel vertical planes, will… … -j -i-TK-f GROINED VAULTING The groined vault shown in Fig. 138 illustrates some of the devices which specialproblems suggest, as well as the use of tangents for perspective curves. The vaults areof uniform semicircular section, covering two series of aisles at right angles, and cani.-don columns.…
Perspective
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