A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ... (1849)
ssure, much more so than if the joint weremade horizontal, as at 6. These remarks will alsoapply to fig. 4, Plate 24. Problem 62. Fig. 4. To describe an Ogee Arch^ or an Arch of Contrary Flexure. Note.—^This arch is seldom used over a large opening, butoccurs frequently in canopies and tracery in…
