434 Variation and Correlation of the Human Skull 
We may turn now to the actual means for the Naqada race and give these 
numbers their classes according to the conventions of the Frankfurter Verstdn- 
digung. 
TABLE X. 
Specification of Naqada Race. 
Class 
Character 
Bemarks 
6 
? 
0) lOOBjL 
Dolichocephaly 
ditto 
Female significantly less doli- 
chocephalic 
(y) lOOH/L 
Ortliocephaly 
ditto 
Sexes equally orthocephalic 
(aa) Protile Angle ... 
Mesognathy 
Mesognathy 
Sexes alike 
(77) Facial Index ... 
Narrow faced 
ditto 
Sexes practically alike 
(0) Upper Face Index 
Narrow uiiper face 
ditto 
Sexes alike 
Zygoni. Face Index* 
Chamaeprosopy 
Leptopro.sopy 
S index=89-17 ; ? index = 
93-92 1 
Zygom. Upper Face Index* 
Leptoprosopy 
Leptoprosopy 
S index = 53-80 ; $ index = 
56-25 1 
(X) Orbital Index 
Chamaeconchy 
Chamaeconchy 
Actual Frankfurt Concordat 
results as in Table V. Fe- 
male sensibly less so than 
male 
ditto 
Hypsiconchy 
Hypsiconchy 
Maciver-Schmidt method of 
measurement. Female dif- 
fers sensibly from male 
(k) Nasal Index 
Platyrrhiny 
Platyrrhiny 
The male is on the borders 
of mesorrhiny and differs 
sensibly from female 
(^) Palate Index 
Leptostaphyline . . . 
Leptostaphyline 
Actual Frankfurt Concordat 
results as in Table V. Sexes 
alike 
ditto 
Bracliystaphyline . . . 
Mesostaphyline 
Schmidt's convention as in 
Table, p. 430. Sexes sensibly 
different 
Alveolar Index* § 
9,5-35 
95-95 
Sexes practically alike 
We are dealing therefore with a long-headed narrow-faced race with a flat nose 
and rather round orbits. Comparing the sexes we note that male and female 
are significantly different in cephalic and zygomatic face indices, further in the 
shapes of the orbit and of the nose ; or greater tendencies to brachycephaly, 
leptoprosopy, hypsiconchy, and platyrrhiny seem secondary sexual characters in 
the female. These results receive confirmation from a sexual comparison of the 
* A formula for calculating the index from the means of the lengths is given by Pearson: R. S. Proc. 
Vol. Lx. p. 492, but the corrective terms modifying the simple ratio of the means are insensible to two 
places of decimals in the present cases. 
t For Aiuos zygomatic face index for <? =86-2, for $ =86-4. 
X For " Altbayerisch " skulls zygomatic upper face index for t? =52-4, for $ =52-8^ and for Ainos 
for g =50-8, for ? =50-5. 
§ The alveolar index, = lOOGLjLB, is not considered and classified in the Frankfurter Verstandi- 
gung, so the actual values are here given. 
