Imitative art;, or, The means of representing the pictorial appearances of objects, as governed by aerial and linear perspective: : being a manual of details, for the amateur sketcher and the man of business, with a chapter on finish. (1840)
Howard, Frank, 1805-1866, Darton & Clark, publisher, J. Green and Co., printer · London : Darton and Clark, Holborn Hill. · leaf 38
24 SURFACES. or horizontal^ or diagonal ; … but the diminution, both in width and depth, will be in a less degree. Circular surfaces receding from the eye, whether in a vertical, horizontal, or inclined position, assume an oval form, more or less deep in proportion to its being much below or nearly on a level with the eye in a horizontal…
Drawing · Perspective · Shades and shadows · Surfaces · Drapery in art · Projection
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
