[43] Cf. T. N. Carver, "Distribution of Wealth," p. 31: N. Y., 1908.
[44] Cf. H. R. Seager, "Introduction to Political Economy," pp. 53-54: N. Y., 1908.
[45] H. Sidgwick, "Principles of Political Economy," p. 297: London, 1887.
[46] Cf. "Wage-Earning Women in Stores and Factories," p. 22: U. S. Bureau of Labor, 1911.
[47] W. Cunningham, "Christianity and Social Questions," p. 118: London, 1910.
[48] J. B. Clark, "Essentials of Economic Theory," pp. 453 and 456: N. Y., 1907.