Miscellanea 
191 
The corresponding regression lines are 
21 Congo sknlls 
43 Gaboon (1864) 
17 Gaboon (1880) 
81 Negro skulls 
The corresponding Lee and Pearson formula obtained by the method of least squares is 
(7=-000156Z5i?' + 812 (0. 
The mean values of B, L, //' for the Bavarian female skulls discussed by Lee and Pearson are 
5 =144-11, 
Z =17.3-59, 
^' = 128-07. 
With these values, we deduce from 5—8 the following values for C. 
(5) 
(6) 
(7) 
(8) 
The mean of the measured values of the capacities of these skulls is 1 337 and formula (8) 
baaed on 81 negro skulls gives a result in very close agreement. 
If the above values of B, L, H' are substituted in Lee and Pearson's formula Q we obtain 
C'=1284 a result which differs from the true value much more seriously than the prediction by 
the negro regression formula. 
Again, if we insert the mean values 
B = 130-75, 
Z =171-33, 
^=129-81, 
of the 81 female negro crania in the formula Q we get C=1266 as against the mean of the 
measured values which is C=1227, demonstrating again the fact that the formulae P, Q based 
on 11 means are not as good as the regression formulae. 
§ 5. We add tables of the correlation between capacity and breadth, capacity and length, 
and capacity and total height for the 110 male and the 81 female skulls, and for comparison 
reprint the corresponding value for German (Bavarian) skulls. 
C= -0003645 BLH+ 164 ± -yl (5), 
V a 
C=-OOCm22BLff+ 27±~ (6), 
6'=-0003134.eZ^ + 311± ^ (7), 
V n 
C= -0003508 5Z^+ 204 (8). 
45 
JT, 
60 
■<Jn 
50 
C=1327±^ 
sin 
C'=1331± 
6'= 1347 ± 
6'= 1315 + 
