Editorial note — Chapter II
John J. (John Joseph) Lalor translation
In the whole Union, in 1830, the age classes up to 20 years embraced 56.12 per cent. of the population; in 1840, 54.62 per cent; in 1850, 51.85 per cent. Compare Horn, Bevölk. Studien, I, 126; Wappäus, A. Bevölk. Stat., II, 44, 125 ff., 88; Tucker, Progress of the United States, 105.