CONSANGUINEOUS MARRIAGES 



253 



These differences are correlated with differences in the number of 

 respirations per minute which are as follows: whites 16.4, negroes 

 17.7 and mulattoes 19. Gould gives results on cranial measure- 

 ments as follows: circumference of head, 22.1 in. in whites, 21.9 in 

 negroes, 22.0 in mulattoes. Dr. S. B. Hunt l has shown that the 

 weight of the brain in the mulatto increases with the proportion 

 of white blood in his composition. The mulattoes less than half 

 white have, on the average, a less brain weight than the pure 

 negro. The results are shown in the following table : 



Brain Weights of Mulattoes 



The figure for the brain weight in whites based on 278 other 

 cases is 1,403 gm. Results confirmatory of these findings have 

 been reported also by Topinard. 



In regard to the fecundity of the mulatto we have varied opin- 

 ions. Morris (The Aryan Race, p. 216) tells us that he "has the 

 weakness and infertility of the hybrid." Nott finds that in 

 South Carolina the mulattoes show a decided infertility, although 

 in Louisiana they are fairly prolific. Woodruff (Expansion of 

 Races, p. 251) states quite positively that "The Mulatto in- 

 variably dies out unless new black blood is infused into the 

 mixed race, and though some families survive a few generations, 

 as a rule there is absolute extinction of such feeble offspring." 2 



lU The Negro as a Soldier." Anthrop. Rev. 7, 1869. 



1 As Prof. Kelsey has remarked (The Physical Basis of Society, p. 298), "Whenever 

 we are told that a people of mixed white and Negro blood must perish from the 

 earth let us not forget that across Africa in the Sudan and down the East Coast 

 there are untold millions of people of just that descent." 



