834.
The principles in question have been derived from the constitution of our nature and the constant relations which are found to obtain in chromatic phenomena. In experience we find much that is in conformity with these principles, and much that is opposed to them.
835.
Men in a state of nature, uncivilised nations, children, have a great fondness for colours in their utmost brightness, and especially for yellow-red: they are also pleased with the motley. By this expression we understand the juxtaposition of vivid colours without an harmonious balance; but if this balance is observed, through instinct or accident, an agreeable effect may be produced. I remember a Hessian officer, returned from America, who had painted his face with the positive colours, in the manner of the Indians; a kind of completeness or due balance was thus produced, the effect of