Color study : a manual for teachers and students (1895)
Cross, Anson K. (Anson Kent), 1862-1944 · Boston : Ginn & company · leaf 40
he long-continued action of anycolor upon the eyes. This action causes the eyes to see, when theyare turned away from the object, its image tinged with a color whichis complementary to that of the object. Mixed contrasts are produced when an object or color is seen byeyes which retain the image of… … 1. Cut the pentagon, Fig. I. 2. Fold Fig. i on line ab, and obtain Fig. 2. 3. Fold Fig. 2 on cd, and obtain Fig. 3. 4. Draw line ef Fig. 3, and cut. 5. Transfer this unit to the other corners to obtain the desired units. 6. Cut on the lines drawn, and obtain Fig. 4. The Hexagon.
Color
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