Color study : a manual for teachers and students (1896)
Cross, Anson K. (Anson Kent), 1862-1944 · Boston : Ginn & Co. · leaf 72
spectrum chart by relation of colors. II. Trace around a 1^' square tablet on practice paper and cut. Fold on one diagonal, ■&?, a b (Fig. i), and cut. Fold one of the triangles, as Fig. 2, and obtain Fig. 3. Each pupil make an original variation by drawing and cutting. Unfold and reserve the pat-… … or violet-red paper. Cut an oblong background, of the required size, from gray paper.
Color -- Study and teaching
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