Walker, William, b. 1821 · New York : C. Scribner · leaf 61
d should be drawncleanly and firmly at once, as in the various perspectivefigures in this work; but when such objects as tree-stems,rustic figures, &c., have to be sketched, then, instead of acold single line, several approximate lines may be used (asin Fig. 23, a), but never dotted lines (as… … o CI d Oil Sketcliing. 33
Drawing -- Study and teaching
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