382 



DR MATTHEW YOUNG. 



The Scottish male, as represented in the present series, is the least variable as 

 regards length, with the Naquada and Tasmanian almost equal to it ; the English 

 male is distinctly more variable, and the Australian shows the highest variation. In 

 the case of the female, as regards length the Scottish group shows the smallest co- 

 efficient of variation, the Australian is next lowest and almost equal to the Scottish, 

 while all the other types are distinctly more variable. 



In respect of breadth, the Scottish male is less variable than the English male, 

 which is less than the German ; the Tasmanian shows an equal variability with 

 the Scottish skull. In the case of the female, the Scottish skull is less variable 

 than the English and German but distinctly more variable than the Tasmanian 

 and Australian. 



As regards height, the English skull is again more variable than the West Scottish, 

 which is practically equal in variability to the Naquada crania and distinctly less so 

 than the Australian. Auricular height I have calculated only for 100 male skulls, 

 and the variability shown for this measurement is greater in the Scottish than in all 

 the other races contained in the table, except the Germans. 



For each of these dimensions, as before mentioned, the male is more variable than 

 the female. 



For circumferential measurements we can compile a table such as the following 

 from the figures available : — 



Table XXVIII. 



Eace. 



Horizontal Circum- 

 ference. 



Vertical Circum- 

 ference. 



Sagittal Arc. 



M. 



F. 



M. 



F. 



M. 



F. 



Scottish . . . 



English 



Bavarian .... 

 Naquada .... 

 Row Grave Germans 



2-69 

 2-87 

 2-86 

 2-54 

 2-70 



2-11 

 292 

 309 



2-27 

 2-40 



3-52 

 3-70 



3-32 



3-02 

 3-97 



2-72 



3-40 

 3-63 



319 



2-79 

 3-90 



3-51 



! 



From an examination of the above table we find that, for the horizontal circum- 

 ference in the male, the Naquada crania show the least variability, the Scottish and 

 Row Grave Germans practically equal variability and sensibly greater than that of 

 the Naquada, while the English and Bavarian coefficients of variation are equal and 

 distinctly higher than that shown by the Scottish series. In the female, on the other 

 hand, the Scottish group shows the smallest coefficient of variation; then the Naquada, 

 Row Grave Germans, English, and Bavarian in an ascending degree. 



With regard to the vertical circumference, we observe that the Scottish groups, 

 both male and female, are more variable than the corresponding Naquada groups but 

 less variable than the English Whitechapel series. 



