funkhousek] ARCHAEOLOGICAL SURVEY OF NORRIS BASIN 



245 



pometric practice of considering only the measurements of adult 

 males. 



Considering first the skulls, of which 23 were measured, we have 

 the following summary: 



Skulls 



Length : Millimeters 



Maximum 194 



Minimum 147 



Mean 165 



Average 166. 82 



Breadth : 



Maximum 175 



Minimum 135 



Mean 156 



Average 154.36 



Cephalic index: 



Maximum 116. 3 



Minimum 77 



Mean 92 



Average 92. 5 



Glabella-inion length : 



Maximum , 175 



Minimum 145 



Glabella-inion length. — Con. Millimeters 

 Mean 158 



Average 160 



Height : 



Maximum 155 



Minimum 125 



Mean 140 



Average 140 



Sagittal-cranial arc: 



Maximum ., 373 



Minimum 329 



Mean 341 



Average 349. 73 



Circumference : 



Maximum 530 



Minimum 480 



Mean 510 



Average 507. 64 



In addition to the data shown in the above summary, it may be 

 noted that the skulls are in general asymmetrical, rather thin walled, 

 show a rather sloping or flattened frontal region, a low cranial arch, 

 and in most cases an occipital flattening. The cheek bones are high 

 and far apart. The bicondylar breadth is great as compared to the 

 bigonial breadth and to the length of the ramus. The eye sockets 

 are uniformly wider than high and in many cases more or less rec- 

 tangular. The above data were secured from enough specimens to 

 insure, we believe, a representative set of means and of averages. 



Corresponding data for the lower jaws of 28 adult males may be 

 tabulated as follows : 



Lower Maxillary 



Bigonial breadth: Millimeters 



Maximum 118 



Minimum 94 



Mean 111 



Average 109. 8 



Bicondylar breadth: 



Maximum 140 



Minimum 110 



Mean 125 



Average 125. 8 



Length of ramus: Millimeters 



Maximum 63 



Minimum 47 



Mean 57 



Average 56. 86 



Breadth of ramus: 



Maximum 39 



Minimum 29 



Mean 34 



Average „ 33. 34 



