io8 Social Environment 



ures have been combined into one index giving 

 each equal v^eight, and the states ranked in 

 accordance with this index. It is found that 

 common-school efficiency as thus determined 

 correlates markedly with fertility in noted men, 

 the coefficient being 0.77 ±0.05. In the case 

 of the scientists the correlation is still more 

 marked. The computation on the basis of 

 Who's Who in Science gives a coefficient of 

 0.86 ±: 0.03, while on the basis of Dr. Cattell's 

 list it reaches the remarkably high figure of 

 0.93 ± 0.02. Such a very decisive correlation 

 is a significant proof of the value of public 

 education as a means of discovering genius. 



It is college education, however, that is pre- 

 sumably most directly related to the prepara- 

 tion of leaders. Data showing this relation 

 were sought, but the census of i860 was found 

 to be disappointing, as it confessedly has been 

 unable to draw the line between academies and 

 colleges. As a result the statistics of higher 

 education for i860 are misleading. While it 

 ought not to be difficult to establish from other 

 sources the association of the greater centers 

 of learning with the areas of dense population, 

 and hence with the production of noted men, it 

 has been found more profitable to approach the 



