Andrews, E. C. (Emory Cobb), b. 1878 · Chicago : The Inland printer company · leaf 33
e that red is at the top, and it is fol- lowed by yellow, green, blue and violet. The spectrum does not stop definitely just beyond red, but blends off gradually into a very dark red, which finally is imperceptible. At the other end, the violet blends into a faint grayish color, so that it is… … Although types of the natural colors, except the purples, are to be found in the spectrum, the hues from yellow-red to green are so much stronger in chroma than the blues and violets that, in order to study the latter colors, it is well to examine them separately. This is accomplished by using as a…
Color printing
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