384 



DR MATTHEW YOUNG. 



male is more variable than the English male, while the female is less variable than the 

 English female. Exactly the opposite arrangement is shown in the values for the 

 \ ,i liability of palate breadth in these two series of crania. In both male and female 

 the palate length is more variable than the palate breadth in the Scottish skull, while 

 in the English series, in both male and female, palate breadth is more variable than 

 palate length. The Naquada crania show a very high degree of variability for palate 

 breadth in both sexes. The variability of palate length in the male Bavarian is 

 practically equal to that of the Scottish male, while the variation in the female is 

 greater than the male. 



The following table shows the variability of certain absolute measurements in 

 Scottish, English, and Naquada skulls : — 



Table XXXI. 



Reference Letter. 



B' . 

 LB . 

 G'H. 

 GB . 

 J 



NH . 

 NB . 

 OjL. 

 0,R. 

 9 L. 

 2 R. 

 GL . 



Character. 



Minimum frontal breadth 

 Basi-nasal length 

 Nasi-alveolar length 

 Intermalar breadth 

 Interzygomatic breadth 

 Nasal height 



, , breadth 

 Orbital breadth (left) 



(right) 

 Orbital height (left) 



>, (right) 

 Basi-alveolar length 



Scottish. 



Eng 



lish. 



Naquada. 



M. 



F. 



M. 



F. 



M. 



F. 



4-63 



4-05 



4-29 



4-55 



5-29 



4-47 



4-03 



3-31 



4-07 



411 



4-88 



468 



6 69 



5-57 



5-50 



744 



6-08 



687 



5-42 



4-25 



5-58 



5-40 



548 



4-77 



4-22 



333 



4-28 



4-13 



446 



4-77 



6-78 



6-19 



5-08 



5-55 



643 



6-81 



7-58 



7-58 



8-89 



7-06 



7-89 



7-28 



4-67 



447 



4-20 



353 



4-97 



5-30 



4-47 



3-97 



469 



4-00 



502 



5-38 



6-50 



6-22 



5-61 



4-31 



7 06 



6-58 



6-38 



6-28 



6-65 



4-47 



7-27 



6-85 



5-19 



521 



4-68 



4-95 



4-84 



5-09 



The above table at first sight seems rather complex, but it shows a few notable 

 features. First of all, in the Scottish series the variability for the male is greater 

 than that for the female in all the characters except two, viz. nasal breadth and 

 basi-alveolar length. In the former the variabilities shown by the two sexes are 

 equal ; in the latter the female is slightly the more variable. 



In the English series the female is more variable than the male in several of the 

 characters, namely, minimum frontal breadth, basi-nasal length, nasi-alveolar length, 

 nasal height, and basi-alveolar length. 



In the Naquada the female is more variable than the male in the following 

 characters : nasi-alveolar length, interzygomatic breadth, nasal height, orbital breadth 

 (both orbits), and basi-alveolar length. 



Examining the male coefficients of variation we find that, for minimum frontal 

 breadth, it is greatest in the Naquada and least in the English ; for basi-nasal length 

 it is greatest in the Naquada and smallest in the Scottish ; for nasi-alveolar length 



