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2. Diagram showing the proportion of white children of both sexes under 15 years, to the 1000 white females between 15 and 50 years, the nubile age, in each state at every decade from 1800 to 1870: devised and constructed by J.M. Toner, M.D. from data given in the several reports of the U.S. Census, to illustrate graphically, the fact of the decline of birth-rate in the U.S

nlm:nlmuid-101194560-bk