in red? The factors enumerated play a part in the complex effect, but there seem to be elements still unaccounted for. In order to explain the total phenomenon we must admit, as in the case of tones, some direct effect of the sensory light stimulus upon the feelings. Rays of light affect not only the sensory apparatus, causing sensations of color; their influence is prolonged into the motor channels, causing a total attitude of the organism, the correlate of a feeling. It would be strange if any sensory stimulus were entirely cut off by itself and did not find its way into the motor stream. But these overflows are too diffuse to be noticed in ordinary experience; they are obscured through association or are not given time to rise to the level of clear consciousness, because we are preoccupied with the practical or cognitive significance of the colors; only in the quiet and isolation of contemplation can they come into the focus. Of course the student of the evolution of mind will want to go behind these color emotions and inquire why a given color is connected with a given reaction. He may even want to connect them with instinctive responses of primitive men. But here we can only speculate; we cannot know. The problem is further complicated through the fact that private color- associations are formed obscuring the aesthetic meanings, which can be rediscovered only through the elimination of the former. Color preferences are often determined in this way; yet sometimes they spring from another and more radical source--an affinity between personal temperament and the feeling tone of the preferred color. A consistent choice of blues and grays indicates a specific kind of man or woman, very different from the chooser of yellows and reds.