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 72
ill be graduated as in the front of a cube, and the receding cylindrical surface diminishing in thickness to a point upon the horizon as it recedes, will be graduated from a point on the upper surface nearest the source of light into a half-tint as it recedes from the light and the spectator, until… … spectator, a horizontal light, graduated from the
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.
