188 PROCEEDINGS OF THE ANATOMICAL AND ANTHROPOLOGICAL 



male skull and the more massive character of the supraciliary ridges 

 and mastoid processes in the male sex are well known and are de- 

 scribed in the general text-books. I shall, therefore, merely remark 

 that the greater size of the cranial portion of the head in the male, as 

 estimated by external measurements, is almost entirely proportional 

 to the greater stature and weight of the male as compared with the 

 female. 



3. CHANGES IN THE SIZE AND SHAPE OF THE HEAD WHICH ARE 

 ASSOCIATED WITH VARIATIONS IN STATURE. 



Tall men in the aggregate have larger heads than short men, but 

 proportionally to the size of their bodies their heads are considerably 

 smaller than those of short men ; or, in other words, the proportion 

 that the size of the head bears to the stature diminishes with an 

 increase of the latter. This is especially noticeable in comparing 

 giants with dwarfs. 



With regard to the relation of the shape of the head to stature, 

 speaking generally, tall men and tall races have longer heads and 

 lower cephalic breadth indices than short, though there are certain 

 notable exceptions, such as the Esquimaux (B. L, 72'2) and the 

 Veddahs of Ceylon (B. I., 71), both of which races are of short 

 stature. 



4. CHAM;KS IN THE FORM AND SIZE OF THE HEAD ASSOCIATED WITH 

 ABNORMALITIES OF THE CRANIAL SUTURES. 



Abnormalities of the sutures may be classed into three main 

 groups. 



1. Sutures which have united prematurely. 



2. Sutures which normally become closed early, but which have 

 remained open in adult life. 



3. Sutures which occur in situations in which they are not nor- 

 mally present at any period of life. 



In addition to these three main groups there are certain irregu- 



