376 DR MATTHEW YOUNG. 



the three groups above named, while it is slightly less in value in the Naquada than 

 in the other two groups. 



Female Skulls. — Fewer groups are available for the comparison of the values of 

 the various dimensions in the female skulls. An analysis of the groups arranged 

 in Table XXII, however, shows that many of the characters in the various series 

 have a similar relationship to one another as they have in the corresponding male 

 groups. 



While the maximum breadth dimension is markedly greater in the German 

 groups than in the English and Scottish groups, we find that in the last group the 

 proportional values of length and breadth have altered, and as a result the Scottish 

 skull has moved into the mesaticephalic class, while the index for the English skull 



itasioiJ. 



-.££' 



AlVSotA^Po/tfT, 





Fig. 1. 



F.H. Frankfurt horizontal plane. P. Profile angle. 



A. Alveolar angle. 9 1 = (180° - <P- <N). 

 N. Nasial angle. 2 = (<P-<A). 



B. Basilar angle. 



remains practically the same as the male index. The length in the Scottish series is 

 approximately equal to that in the Naquada and Aino groups, the lengths of the 

 Tasmanian and Australian are practically alike, while the Tasmanian distinctly 

 exceeds the Australian in breadth. In length both are definitely shorter than the 

 Scottish mean value. As regards height, the Scottish, Whitechapel English, 

 Wiirtemberg, Tasmanian, and Australian have nearly equal values, while the Naquada 

 is distinctly higher in value. There is no hypsistenocephalic group tabulated in the 

 female sex, even the Australian falling below 100 as regards height-breadth index. 



The horizontal circumference is approximately equal in the Scottish, Whitechapel, 

 two German and Aino groups, and distinctly less in the Naquada, while the sagittal 

 arc in the two German female groups, as in the male groups, is distinctly less in value 

 than that found in other series which are very similar in value. 



The nasal and orbital dimensions show much the same relationship in the female 

 groups as in the male. In the Scottish female group the nasal and orbital indices 

 are higher in value than in the male group, the nasal index is much the same in the 

 English male and female groups, while the orbital index is distinctly higher in value 

 in the female than in the male series. While the nasal index is higher in value in 



