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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 33

An illustration from 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, leaf 33
19 SURFACES. one direction and concave in the other, as the inside of a drum or cylinder. Conical — also flat in one direction and curved convexly in the other, but diminishing in size from one end to the other, as the sides of a sugar-loaf. … Funnel-shaped — the reverse of conical, flat in one direction and concave in the other, but

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.

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