10 values traced with each hue. SCALE of VALUE. The Color Sphere.

Chroma-difference.

Strong, middle, and weak chroma (without change of hue).

Strong, middle and weak chroma (traced with three values without change of hue).

Strong, middle, and weak chroma (traced with three values and ten hues).

Maxima of color and their gradation to white, black, and gray. The Color Tree.

EXPRESSION of color.

[(49)] Matching and imitation of hues (using stuffs, crayons, and paints).

Matching and imitation of values and hues (using stuffs, crayons, and paints).

Matching and imitation of chromas, values, and hues (using stuffs, crayons, and paints).