212 AMERIC&N ANTHROPOLOGIST [N. s., 18, 1916 



tively shorter and broader than the male, probably due to the 

 more extensive rotary use of the same. The male mandible is 

 approximately as long (condylosymphisial length) as it is wide 

 (bi-condylar width.) The gripping and grinding powers of the 

 jaws in both sexes is tremendous. The Eskimo workman uniformly 

 uses his teeth to reinforce his hands in tightening lashings or undoing 

 knots of frozen sealskin. The constant chewing by the women soon 

 wears their teeth to a common level. The inclination of wear is 

 slightly oblique, and pronouncedly so in the men, the outer edge 

 of the teeth being worn on the lower jaw and conversely above (see 

 pi. xiv). In both sexesS;here is a strengthening of the alveolar 

 process at the molars to withstand the heavy strain put upon them. 

 The molars themselves often show an extra cusp, and sometimes 

 an accessory one, while the third molar in many cases has a foliated 

 appearance, giving additional small cusps. 



The bones of the incomplete female skeleton were found to be 

 much more primitive than those of the two male skeletons. The 

 olecranon fossa were perforated, and there was an excessive forward 

 curve of the femur which was absent in both male skeletons. The 

 exostoses for the attachment of muscles were also more pronounced 

 in .the, female skeleton. Generally speaking, the female skeleton 

 strikes one as more primitive and less differentiated, and the male 

 as more specialized toward a racial type. 



THE FORM OF THE PELVIS 



The female pelvis in the Eskimo is chiefly remarkable for its 

 large dimensions. A specimen from Davis strait measured by 

 Turner gave the following results: 



Conjugate Transverse Oblique 



Brim 45/8 in. 6 in. 5 6/8 in. 



Cavity 55/8 &quot; 52/8 &quot; 54/8 &quot; 



Outlet 52/8 &quot; 51/8 &quot; 54/8 &quot; 



Circumference of Brim 16 1/2 in. 



Depth of Pelvis 4 



Index of Brim 76 



The female pelvis in the present series was incomplete, only one 

 innominate bone remaining. The dimensions of the same were, 



