There was a problem when proofreading this page.
SPACING OF THE MUNSELL COLORS
415
An image should appear at this position in the text.Fig. 13. Master hue chart in the I.C.1I. standard coordinate system showing the recommended loci of constant hue for the 20 standard hues at value levels 1/ through 9/.
wave-length. Reference to Fig. 13 shows that the loci representing the same hue at different values are in some regions much more closely grouped than in others. The 10Y line, for example, is nearly the same at all value levels. This agrees with findings of Purdy (32) and of Exner (7) in their investigations of the Bezold-Brücke effect. Figure 13 also suggests invariables of this type at
