DATA FOR THE PEOBLFAI OF EVOLUTIOX IN MAN. 
261 
Appendix. 
On the Correlation of Shull Capacity with Circumfereyitial Measurements on the Skull. 
It may have occurred to some readers that other measurements of the skull beside 
length, breadth, and auricular height would give effective means of reconstructing the 
capacity. The two that most readily suggest themselves are the horizontal 
circumference, U say, and the vertical circumference, from the top rim of one auricular 
passage over tlie top of the skull to the other, V say. The following are the values 
for C, U, and V for the Naqada skulls as measured and calculated by Miss C. 1). 
Fawcett, B.Sc., who has most kindly placed them at my disposal. 
Naqada Skulls, S- 
Organ. 
Mean. 
8. I). 
Correlation. 
U . . . 
509-170 
12-178 
Tuc = - 6803 
C . . . 
1379-23 
109-213 
/-av = --5116 
\^ . . . 
.304 - 423 
9-850 
•rye = -6736 
Naqada Skulls, ? . 
H . . . 
492-759 
11-958 
/-ye = - 6588 
0 . . . 
1283-238 
86-902 
/ UV “ * 4:1) 1 0 
Y . . . 
29G-615 
8-430 
rye = -5821 
The units are millims. for U and V and cubic centims. tor C. From these the 
following equations for the reconstruction of C in terms of U and V result :— 
For males 
For females 
C = 3-5035 U + 2-7789 V - 1250-6041 
> ■ 
C = 3-2244 U + 3-2859 V - 1280-286 
(IS). 
I have worked out somewliat fuller data for the collection of skulls of Theban 
Mummies at Leipzig, the measurements of which are given in the German Anthro¬ 
pological Catalogue. 
