Relations between the colorimetric values and densities of sapwood

Color measurements were made for sapwood specimens of 26 hardwood species. The densities of the specimens ranged from 258.5 to 945.6kg/m(3). The color imetric values and densities were compared among the species. The tristimul us values of X, Y, and Z were poorly correlated with the densities. The chr omaticity coordinate x had a good linear correlation with the densities of the wood specimens, especially in the transverse planes. The transverse pla ne of wood fibers is thought to emphasize the relative values in the long w avelength region of the visible ray.