Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 763
r will be represented by verticallines, in running water are indicated by horizontal lines with closer shading togive depth of tone. In drawing the trunk of a tree the characteristics of the bark must be ob-served. The trunk of an oak is rough and broken, while that of the birclirequires curved… … FREP]-HAND DRAWING. 747 In all sketching from Nature the lines must be crisply and unhesitatinglydrawn, the forms clearly defined, and the masses decisively indicated. In rapidwork a mere outline must suffice, but it must be clearly and cleanly pencilledin. When an elaborate drawing is required,…
Mechanical drawing
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