Chemical Composition of Rice and Its Relation to Soil Fertility in China and Japan.

We believe that the Gordian knot may be cut by discarding the traditional definition of white, and assuming that red and green, when mixed alone, tend to cancel each other's chroma without the intervention of any blue process whatever. This leaves but little chroma for the blue to cancel when mixed with yellow. Consequently, no intrinsic blue process need be assumed to accompany yellow, and the extension of the blue curve into the yellow region need not be postulated. W. F. HAMILTON ELLIS FREEMAN