Hrdlicka. 



55 



Average Head Circumference Maximum of the Children, According 

 to Color, Sexes and Ages. 



The module of Smith is a term applied in anthropometry to an 

 abstract number which is obtained by adding together the greatest 

 length, the greatest width and the height of the head and divid- 

 ing the resultant by 3. The figure obtained, although not express- 

 ing any real size of head, is nevertheless a very useful substitute for 

 the real size or capacity of the cranium and is very useful in com- 

 parisons. Our table below, which gives the average modules of the 

 different classes of children, shows how well we can trace the differ- 

 ences in the size of the head through these abstract figures. I pre- 

 fer the module for this purpose to everything except the real cranial 

 capacity, which, of course, can only be obtained on skulls. 



Average Modules of the Head of the Children According to Color, 



Sexes and Ages. 



