554 



AMERICAN MEN OF SCIENCE 



a hundred times as many scientific men as 

 other parts. The negroes may have a racial 

 disqualification, but even this is not proved. 

 The main factors in producing scientific and 

 other forms of intellectual performance seem 

 to be density of population, wealth, oppor- 

 tunity, institutions and social traditions and 



ideals. All these may be ultimately due to 

 race, but, given the existing race, the scien- 

 tific productivity of the nation can be in- 

 creased in quantity, though not in quality, 

 almost to the extent that we wish to increase it. 

 There may be no significant difference in 

 the distributions of the first and second groups 



TABLE I. DISTRIBUTION OF THE THOUSAND MEN OF SCIENCE 



