DATA FOR THE PROBLEM OF EVOLUTION IN MAN. 
247 
While I believe strongly in picking out the formula for the most closely associated 
race, I give the value of the constants for the male and female formulm as obtained 
not by correlation, but by the method of least squares from the results in Table XX. 
For the males excluding the negroes, I find for the ten races 
d C = -000365 L X B X H + 359-34 .(lO). 
For the females excluding the negroes, I find for the eight races : 
? C = -000375 L X B X H 4- 296-40 .(11) 
Table XXL gives the capacities of the races as found from (10) and (11). 
Such equations should, I think, only be used when we have no knowledge of the 
evolutionary history of the race, which would lead us to adopt one of the special 
equations of Table XVII. 
(12.) In attempting to use the formulm given in this section, the reader must 
bear in mind that they can only be applied when the maximum length, maximum 
breadth, and the auriculai' height are known. The latter measurement unfortunately 
is occasionally omitted in series of skull measurements. If the total height of the 
skull H' be given, then the following formulas can be used, which have been 
calculated by the method of least squares from all the results in Table XX. 
d C = -000266 L X B X H' + 524-6 .(12), 
$ C = -000T56 L X B X H' + 812-0.(13). 
The following table includes results from (12) and (13) as well as from (10) 
and (11) :— 
* Excluding for various reasons the unsatisfactory French (P), the French (M), and the Badenser, I ftnd 
C = -000.370 L X B X H + 321-16. (10) his. 
