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 The white is an imitation of new-fallen snow. Neither of these standards can be very nearly approached although we often hear of things as "white as snow" and as "black as night."

In the same group and following the black and white are two examples each of the four kinds of grays: Green gray, warm gray, cool gray and neutral gray. A pure white in shadow is the true neutral gray and a perfect imitation of this is made by the rotation of combined black and white disks on the color wheel. If to the black and white disks we add a blue disk we have cool grays. With red, orange or yellow the warm grays are produced, while the use of a green disk gives green grays. In the papers two tones of each gray are furnished.

The papers found in the first two sections comprise all the colors necessary for earliest primary color instruction, aud should become familiar to the children before explanation is made of the colors in the succeeding collections.

In the third section, designated "Broken Spectrum Scales" will be found a collection of gray colors or broken colors. As has before been stated, a broken color is a pure color mixed with a neutral gray. In the combination of pigmentary colors a tint of a color is the pure color mixed with white, a shade is the color mixed with black, and a broken color is a pure color mixed with both black and white, which is a neutral gray. Therefore if with red, for example, we mix a certain amount of a given neutral gray and call that the normal tone of a broken scale of red, for the tint in that scale we must mix with the standard red a lighter gray and for the shade a darker gray.

When a comparatively small quantity of neutral gray is combined with a pure color the result is a "gray color," as above described, because the color is quite definitely retained, but more or less modified by the gray. On the other hand, if a relatively small quantity of color is added to a neutral gray, the resulting color is properly called a "colored gray," because it is still a gray modified by color, and in this class we have warm grays, cool grays, etc., according to the color combined