A CONTRIBUTION TO THE STUDY OF THE SCOTTISH SKULL. 



383 



For the variability of the sagittal arc the same relationship obtains in the male 

 sex as for the transverse arc, but in the female the sagittal arc is less variable than 

 in the Naquada crania and the Whitechapel English. No figures are available for 

 the sagittal arc and the transverse arc in the Bavarian series. 



Fewer figures are available for the remaining absolute measurements in the 

 various races, but we may compare the following : — 



Table XXIX. 



Profile Angle. 



Race. 



Standard Deviation. 



M. 



F. 



Scottish ..... 

 English ..... 

 Bavarian ..... 

 Naquada ..... 



3-09 

 3-92 

 2-79 



2-87 



2-70 

 2-85 

 3-59 

 3-66 



The English skull shows the highest variability in respect of this angle in the 

 male sex, the Scottish is next in magnitude, while the coefficients of variation in the 

 Bavarian and Naquada are distinctly less and about equal in value. In the female 

 there is a rearrangement of the groups. The Scottish and English are approximately 

 equal in variability, while the Bavarian and Naquada are sensibly more variable and 

 are also about equally so. In the Scottish and English groups therefore the male is, 

 as regards this dimension, more variable than the female, while the opposite relation- 

 ship obtains in the Bavarian and Naquada. 



Comparing palate lengths and breadths with regard to variability, we have the 

 following table : — 



Table XXX. 



Race. 



Length of Palate. 



Breadth of Palate. 



M. 



F. 



M. 



F. 



Scottish ..... 

 English ..... 

 Bavarian ..... 

 Naquada ..... 



6-47 

 5-65 

 6-42 

 649 



6-29 

 6-53 

 6-85 

 7-41 



6-84 

 7-75 



9-29 



5-77 

 7-68 



8-55 



The above table shows the high degree of variability that holds in all the series 

 named in respect of palate length and breadth. For palate length the Scottish 



