NO. I 
NATIVES OF KHARGA OASIS HRDLICKA 
53 
better than the circumference or any other single dimension. When 
its relations to cranial capacity are better known, the cephalic module 
will serve capably, particularly in the form of its averages, as an 
index of the size of the brain. 
The conditions shown by the Kharga Oasis men in regard to the 
cephalic module are given in the next table. The average is per- 
ceptibly smaller than that of the central or north Europeans, and 
also smaller than that of the majority of the tribes of the Indians. 
Some details concerning this point will be given in succeeding 
paragraphs. The range of variation is moderate, extending over 
17.5 mm., which equals the variability of 0.057 P er centimeter of the 
mean. The distribution of the module gives two fairly separate and 
distinct modes. 
KHABGA OASIS, MEN: CEPHALIC MODULE. 1 
Number of observations : 150. 
Average: /5.4cm. 2 (ist 50: 15.45; 2d 50: 15.31; 3d 50: 15.45 cm.) 
Median: 15.38 cm. Modes: 15.25 (15.21-15.3) and 15.55 (15.51-15.6) cm. 
Minimum : 14.43 cm - Maximum : 16. 18 cm. 
Table of frequencies: 
VO 
^ 
00 
ON 
_ 
HH 
01 
> 
^ 
J 
n- 
rt 
Tj- 
IO 
IO 
10 
10 
to 
g 
ii 
I 
1 
i 
i 
i 
JH 
is 
J2 <-> 
VO U 
lx 
00 
O\ O 
O 
HH U 
04 O 
ro 

Tf 
TJ- 
M 
3 
Zf 
10 
M 
IO 
to 
to 
Number of cases. 
I 
I 
2 
5 
10 
10 
15 
I? 
15 
Per cent 
7 
7 
J 3 
J 3 
6 7 
6.7 
10.0 
11.3 
10.0 
1O V 
vo 
t-^ 
00 
ON 
HH 
N 
IO 
IO 
IO 
IO 
IO 
vo 
VO 
NO 
Is 
Tf 
is 
IO O 
is 
\o o 
1 
t^ u 
i 
00 
Ea 
ON 
SB 
o o 
Ee 
<-* u 
IO 
IO 
IO 
IO 
IO 
IO 
VO 
VO 
Number of cases 
IT. 
18 
15 
14 
6 
3 
2 
I 
Per cent 
8.7 
12.0 
10.0 
9.3 
4.0 
2.0 
1.3 
^.(7 
1 Diameter antero-posterior max. + diameter lateral max. + auricular line bregma height 
3 
2 Probable errors 0.018; standard deviation, <r, =0.3312, 0.013; co- 
efficient of variability, C, =2.151, 0.084. 
The size of the head, expressed by the module or in any other 
manner, possesses in the whites and in other races, as is well known, 
certain relations to stature. This relation is not the same for all the 
different statures found in any group, nor is it equally proportionate to 
