Note 764 — Chapter XVIII · PROBLEMS OF MARRIAGE AND THE FAMILY
Reading edition
Oettingen, Die Moralstatistik, 89-94, and authorities there cited; Bertillon, Annales de démographie internationale, I, 24; Cauderlier, op. cit., 61-78, 102 ff., giving statistics for Germany, Belgium, England, and France. Cf. Mayo-Smith, Statistics and Sociology, 100, 101.