REPOllT OF THE ANTHROPOMETRIC COJIiXITTEE. 



269 



of the boys and masters under 40 years of age, divided into two gronps- 

 those who are nnder and those who are above the ago of 15 years. 



From the similarity of the percentages of the two periods it would 

 appear that little change takes place in the colour of the iris after the age 

 of 15 years, as the dark eyes are barely one per cent, greater in the later 

 than the earlier period. The proportion of fair to dark eyes is 64'7 to 

 35'3, or about two fair to one of dark complexion. 



GoLOUK-BLiNDNESS. — Of the 600 boys and masters, 15, or 2*5 per cent, 

 were found to be colour-blind, a proportion which has been found to exist 

 elsewhere in the same class of boys, and about half that which exists in 

 the uneducated classes. The following table shows the nature of the 

 chromatic defect, and the condition of the eyesight and the colour of the 

 hair and iris. 



Having observed in my private examinations that colour-blindness 

 was very frequent in persons with red hair, Mr. Preston has furnished me- 

 with the colour of the hair in his cases. The Table of the relative pi-e- 

 valence of different coloured hair published in the Anthropometric 

 Committee's Report for 1880 shows that red hair prevails in the professional 

 classes (in which are included the Marlborough hoys) to the extent of 

 9'06 per cent., while in conjunction with complete colour-blindness in the 

 above Table it exists to the extent of 41'7 per cent. Light-coloured eyes 

 are slightly in excess, and imperfect eyesight is more prevalent among th& 



