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MIXTURE & BALANCE

41

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N^{5}, as will also N^{7} and N^{3}, N^{8} and N^{2}, or N^{9} and N^{1}. But N^{9}
and N^{3} will unite to form N®, which is midway between 3 and 9.

(66) When this numbered scale of values is familiar, it serves
not only to describe light and dark grays, but the value of colors
which are at the same level in the scale. Thus R’ (popularly
called a tint of red) is neither lighter nor darker than the gray of
N?. A numeral written above to the right always indicates value,
whether of a gray or a color, so that R^{1}, R^{2}, R^{3}, R^{4}, R^{5}, R^{6}, R^{7},
R^{8}, R^{9}, describes a regular scale of red values from black to white,
while G^{1}, G^{2}, G^{3}, etc., is a scale of green values.