International Correspondence Schools · Scranton, International textbook company · leaf 118
eneutral color, as gray, brown, etc., of which e is the transparent shade ; while / is the naturalshade on the ground color,made with the same as e, butgiving an entirely differentshade. 73. The Spectrum Shade.—This is produced by blending shades together, and its use is confined almost exclusively… … Fig. 5.
Lettering · Sign painting
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