272 



ANTHROPOLOGICAL SURVEY IN ALASKA 



[BTH. ANN. 40 



The general orbital index of the Eskimo is close to 90 in the 

 males, 90.5 in the females. Such orbits are classed as also relatively 

 high or megaseme, a character in which they resemble many of the 

 American Indians. Thus the male crania of the Siouan tribes give 

 the practically identical general index of 90.5. 



The slightly higher index in the females is the rule to which there 

 are but few exceptions, and those in individual groups where the 

 numbers of specimens may not be sufficient. The same tendency is 

 observable in the Indians, and appears in fact to be panhuman. It 

 is due to slightly lesser relative height as compared to the breadth 

 of the orbit in the males, which condition is due in all probability 

 to the greater development in the males of the frontal sinuses and 

 supraorbital arches. 



Eskimo Crania: Dimensions of the Orbits in Relation to Those of the 



Face 



orbital height versus upper facial height 



PERCENTAGE RELATIONS OF ORBITS TO FACE 



