﻿NO. I 



NATIVES OF KHARGA OASIS HRDLICKA 



89 



The older adults at Kharga have in general broader mouths than 

 the young adults, and a correspondence is frequently noticeable 

 between broad noses and faces and broad mouths. The nose and 

 mouth influence each other probably but very little, if at all, but 

 both are affected alike by age and breadth of face. 



The Bigonial Diameter of the Lower Jaw 

 The greatest lower facial breadth, or diameter bigonial, presents 

 in the Kharga men the very moderate average of 10.3 cm. Weis- 

 bach 1 obtained in the Patagonians 13.0; Australians 11.5 ; Maori 

 1 1.4; northern Slavs and Roumanians 11.3 ; Tagalogs 11.1 ; southern 

 Chinese, Magyars 11.0; Javanese 10.9; Gypsies 10.8; Hawaiians 

 10.7; Jews 10.6; Siamese, northern Chinese, Congo negroes 10.4; 

 Japanese 10.2; Kaffirs 10.1; and Hottentots 9.2 cm. 



The range of variation of the measurement in the Kharga series 

 is 3.2 cm., equalling ±0.156 per unit of the average, which is not 

 above the ordinary. The distribution of the measurement is some- 

 what irregular, which is doubtless due to functional causes, or more 

 directly, to uneven development of the masseters. 



KHARGA OASIS, MEN: DIAMETER BIGONIAL OF LOWER JAW 



Number of individuals measured: 100. 



Average: 10.3cm. (1st 50: 104; 2d 50: 10.2 cm.) 



Median : 10.4 cm. Modes : 10 and 10.6 cm. 



Minimum : 8.0 cm. Maximum : 12. 1 cm. 



Table of frequencies : 





R 













<M 



""*" 



vo 



cc 





n 



M 









<N . 



Tf . 



VO . 



00 . 





O . 



O . 



. 



. 



M 



M 



oi . 





? 



o\ £ 



?! 



r^S 



?i 



zs 



7 a 



7 S 



7 S 



7 S 



7 6 



7 6 



7S 





1 



1 



1 u 



HH O 



CO O 



10 



r-. 



On U 



M O 



CO O 











CO 



10 



c^ 



On 































O 















O 



1— 1 



t— 1 





00 



On 



6. 



On 



On 



On 

















Number and per 





























cent of cases 



1 



3 



3 



6 



8 



12 



11 



10 



19 



13 



6 



5 



3 



The bigonial diameter bears a direct relation with the greatest 

 breadth of the face and an indirect one with that of the head. But, 

 as in the case of the breadth of the forehead, the dimension aug- 

 ments within the series at a greater rate than those with which it is 

 compared, in other words it is enlarged to some extent through 

 other agencies than the correlation with the breadth of the upper face 



L. c, pp. 279-280. 



