Abstract
During the 35 years covered by this report the fertility ratio for the state of New York dropped from 666 to 463. The population of the state nearly doubled and the population of the cities increased five fold during this time. The resultant population was nearly equally divided between rural and urban by 1875. Taking 900 minor civil divisions the variables, density of population, percent native, value of land, and value of dwelling are significantly related to the fertility ratios in 1855, 1865 and 1875. If these variables are indices of urbanization, the data nor only point to the relation of fertility to degrees of urbanization but suggest that we should study more cultures within which a particular kind of urbanization has emerged.

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