The elements of art; a manual for the amateur, and basis of study for the professional artist (1848)
Chapman, J. G. (John Gadsby), 1808-1889, Chapman, J. G. (John Gadsby), 1808-1889. American drawing book · London, D. Bogue · leaf 97
to represent a square block, with a smooth, even surface : the greater degree of evenness and regularity that we can preserve in the lines, the nearer we will approach its faithful resem- blance j and if, on the other hand, its surface be broken, or uneven, we must have recourse to lines, by which…
Drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
