Whipple, G. C. Vital Statistics: An Introduction to Demography (New York, 1923). (VII, 1; VIII, 2, 3; IX, 2.)
2. The relative differences in the age and sex groups, in the city as over against the country, and in the various areas in the city are indicative of fundamental processes tending to produce typical results.
Baker, J. E. “City Life and Male Mortality,” Publ. Amer. Statist. Assoc., XI (1908), 133–49. (VIII, 1.)
Böckh, R. “Sterbetafeln C (für Grossstädte); Die fünfzig Berliner Sterbetafeln,” Bericht über 14ten Intern. Kongr. Hygiene, III (Berlin, 1908), 1078–87. (V, 1, 2, 3, 4; VIII, 1.)
Heron, David. On the Relation of Fertility in Man to Social Status and on the Changes in This Relation That Have Taken Place during the Last Fifty Years (London, 1906). (VII, 1, 5; VIII, 1.)
Röse, C. “Die Grossstadt als Grab der Bevölkerung,” Aerztliche Rundschau, XV (München, 1905), 257–61. (VII, 3; VIII, 1.)
3. Whether the conditions of city life have an influence on the fecundity of women and the size of the family is an aspect of city life inviting accurate study, attempts at which have already been made.
Haurbeck, L. “Der Wille zur Mutterschaft in Stadt und Land,” Deutsche Landwirtsch. Presse., XI (1915), 12. (VIII, 1, 2; X, 2.)
Kühner, F. “Stadt und Bevölkerungspolitik,” Städte-Zeit, XIV (1917), 306.
Lewis, C. F., and J. N. Natality and Fecundity: A Contribution to National Demography (Edinburgh, 1906).