155 pp. Translated into English from the original German by F. Bradley. Kuppers explains his new model for understanding color, the Rhombehedral System, and critically compares them to Ostwald's Pyramid, Hickethier's Cube, and others. Kuppers' method combines the definition of additive color mixing with that of subtractive color mixing and shows that each individual shade can be uniquely defined viz-a-viz the relationship of its color constituents to the primary colors.
