December 7, 1906.] 



SCIENCE. 



733 



and decreases continually at greater distances 

 from this center. It is reduced to about one 

 half in the surrounding states — 46.1 in Maine, 

 46 in New Hampshire, 57.1 in Vermont and 

 47.2 in New York. There is a further reduc- 

 tion to one half in Pennsylvania — to 22.7 — and 

 this proceeds as we go southwards, the rate 



being 8.8 in Virginia, 5 in North Carolina, 

 2.8 in Georgia, 2.1 in Alabama, 1.3 in Missis- 

 sippi and 1.4 in Louisiana. In the north 

 central states the conditions are intermediate 

 between New York and Pennsylvania. Thus 

 the birth rate per million is 32.1 in Ohio and 

 36 in Michigan. Here again it decreases as 



Table I. Distribution of the Thousand Men of Science. 



