40 



H. B. Ferris, M.D. 



The followini^' tables make possible a ready comparison of the 

 results of former observers with our results : — 



Head length 



Average 



Maximum 



Minimum 



Range of variation 



Head breadth 



Average 



Maximum 



Minimum 



Range of variation 



Head height 



Average 



Maximum 



Minimum 



Range of variation 



Cephalic index 



Average 



Maximum 



Minimum 



Range of variation 



The average cephalic index as determined by the two expe- 

 ditions is practically the same but distinctly less than Chervin's 

 results. The average index in the female is somewhat greater 

 than that in the male but both just come within the mesaticephalic 

 group (76-80.9) barely escaping the brachycephalic class. Thf* 

 seriation table shows that 15.3%' of the males are dolichocephalic 

 (-75-9) • 55-37^ niesaticephalic. and 29.47^ brachycephalic (81-). 

 In the case of the females 5-97^' are dolichocephalic, 48.57^ are 

 mesaticephalic, and 45.6% brachycephalic. l^rachycephaly is 

 therefore more frecjuent and dolichocephaly less frequent in the 

 female than in the male. 



The following table makes possible a comparison with Chervin's 

 results : — 



