Chapman, J.G. (John Gadsby), 1808-1889. / The American drawing-book: a manual for the amateur, and basis of study for the professional artist: especially adapted to the use of public and private schools, as well as home instruction.
(1870 [1873 printing])
Chapter IV. The rudiments of drawing. Of manner or method--the act of writing, in connexion [sic] with drawing--general instructions, etc.--Conclusion., pp. 91-112
MANNER OR METHOD. 93 Suppose, fir example, we desire 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 ~ and if, on the other hand, its surface be broken, or uneven, we must have recourse to lines, by which that character can be most readily expressed. To represent a rude stake, water-worn and scraggy, far different lines are requisite, than if the object of imitation were a smooth and well-rounded post.
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