H. ()n8F/)W iMf) 



armngiyl in onlor of nmf^nitudt*'. Ktwh absciHsji then n^pn'srnlH an 

 individual insivt. 



Thi» diHtributions which rt'wult lor t'arh family, or j^roup of fumilicK, 

 have lK»i»n ^ivt'n in fidl al tin* rnd of thr jmjM r. lis it wjim cuUMidin'd a 

 mort* conris«* and acouniU' uh^iIukI (»f puhlishinL^ ih** <lata than any form 

 of UbK'. 



In each figure the heavy black line di'note.s t he orange values. ( )range 

 is the donunating colour, but owing to the particular dyes used in making 

 the coIouixhI glaitsi's. m»>re yell<>w units are always re(juired than Vi'<\. 

 This exct^ss of yellow is much less iniportant than the orange, since a 

 considerable inci-ejvse or decrease in it alt<*rs the colour torje much less 

 than quit<} a small change in the red. It is nevertheless significant, 

 so the values have been shnwn in each c.-usc by means of a small circle 

 on the same perptMidictdar as the corn's|)onding orange value. It will 

 be seen at once that these yellow values do not follow the sami* order 

 as the orange, and an oscillating curve results. This merely means 

 that of two given orangt's, the paler, i.e. the one containing the least 

 red, may contain more yellow than the darker, or rice versa. For this 

 reiison it ha.s been thought well to arrange the yellow values, also, in 

 their order of magnitude. The n-sulting curve is shown by a line of 

 crosses, but it must be remembered that any given cross does not 

 necessiirily refer to the same insect Jis the orange value on the same 

 perpendicular. The yellow curve arranged in the sann' order as the 

 orange has been called " yellow a," the yellow curve rearranged in its 

 own order of magnitude "yellow 6." Generally speaking it will be seen 

 that the yellow values are in most cases approximately equal to the 

 orange, so that the curve " yellow h " runs roughly parallel to the 

 orange curve. 



In the case of single families, the colour-values of the two parents 

 have been printed in the margin in s<piare brackets, beside the arrow 

 which indicates, at the appropriate point along the colour scale, the 

 orange value of each parent. Where more than one family is included 

 the mean value of the parents h;is been given. 



(6) 71) e frequency distributions (Figs. 2 — 14). 



Although the curves showing the distribution of the colour-values 

 have been given chi«*Hy to serve the purpose of a record, yet for the sake 

 of convenience and simplicity, and in onler to bring out the mostsiUient 



' ' This method has been HUggested for anthropological studies by Eug. Dubois (Man, 

 Vol. VIII. June, 19(>8). 



