io6 Social Environment 



Who's Who in America, 0.76 ± 0.05 for Who's 

 Who in Science, and 0.80 ± 0.05 for Cattell's. 

 Manufacturing states are of course the ones 

 in which great cities have grown up, and in 

 which wealth and cultural advantages have de- 

 veloped.^ It is evident that the opportunities 

 an urban environment affords are very closely 

 associated with the production of men of note. 

 Before leaving the question of the value of 

 a city environment, it may be observed that 

 there is evidence to show that the natives of 

 large cities do not achieve fame any more read- 

 ily than do the natives of the neighboring 

 smaller places and rural districts. Dr. Cattell 

 gives statistics^ that show that one-seventh of 

 the population, comprising the inhabitants of 

 the largest cities, produces 26% of the great 

 scientists, or 1.83 times its pro rata share. Now 

 his data show that a similar percentage of the 

 nation, comprising the total population of the 

 most thickly settled states, can be credited with 

 from two and one- fourth to three times its pro 

 rata share of great scientists. That is, the in- 

 clusion of the contiguous smaller places and 



■• Clearly shown by Correlation 31, which gives a coeflfi- 

 cient of 0.86 ± 0.03, in spite of the divergence that must 

 result from taking censuses thirty years apart. 



'^American Men of Science, p. 559. 



