424 Variation and Correlation of the Human Skull 
126, 131 and 133 o and the conspicuous male maxima at 131, 135 and 138"5. 
This again is very inconclusive agreement. 
Lastly, if the material were markedly heterogeneous the variability in breadth 
and length of skull ought to be large as compared with admittedly homogeneous 
material. We give some comparative results in the following table of standard 
deviations and coefficients of variation : 
TABLE IV. 
Variability in L and B of Naqada Crania compared with Homogeneous Series. 
Series 
L 
L 
$ 
B 
B 
S. D. 
C.ofV. 
S. D. 
C.ofV. 
S. D. 
C.ofV. 
S. D. 
C.ofV. 
Naqada 
5-722 
3-092 
5-247 
2-963 
4-612 
3-421 
4-490 
3-420 
Bavarian* 
6-088 
3-371 
6-199 
3-571 
5-849 
3-887 
4-891 
3-394 
Aino* 
5-936 
3-195 
5-453 
3-077 
3-897 
2-759 
3-662 
2-677 
French t 
7-202 
3-966 
6-435 
3-651 
6-068 
4-206 
5-062 
3-674 
English J 
6-446 
3-435 
6-536 
3-665 
4-976 
3-554 
5-062 
3-781 
Judged by length we see that for both sexes the Naqada series is less variable 
than Bavarian, Aino, French, and English. Judged by breadth the Naqada are 
more variable than the Aino, less than French and English and differ little from 
the Bavarian skulls. Accordingly it would appear that the Naqada series is quite 
comparable in homogeneity with any modern series of skulls of like number, even 
with such very homogeneous material as the " Altbayerisch " crania of Professor 
Ranke and the Whitechapel crania of Professor Thane. We think therefore that 
we are justified in treating our material as homogeneous and in speaking of 
a Naqada race and not merely of the Naqada crania. 
(7) Mean Vahies of the Cranial Characters of the Naqada Race and their 
Comparison with those of allied and other Races. 
The accompanying Tables V'^ and V' contain our principal results for the 
mean values of the chief characters. We give the number of skulls dealt with for 
each mean and the probable errors calculated in the usual manner. We also give 
for comparison the values which were available for the following races : 
(a) Maciver's measurements on the earliest inhabitants of Abydos reduced 
by Miss M. A. Lewenz and Professor Pearson. These results are based on very 
* Dr A. Lee : Phil. Trans. Vol. 196, A, p. 230. 
t Deduced by C. D. Fawcett from Broca's measurements of the skulls in the Paris catacombs. 
X Unpublished measurements on Professor Thane's Whitechapel Skulls. 
