[213] A similar difficulty in distinguishing town influences from specific trade influences confronted Dr. Arlidge in his investigation into diseases of employments. "It is a most difficult problem to solve, especially in the case of an industrial town population, how far the diseases met with are town-made and how far trade-made; the former almost always predominates." (Diseases of Occupation, p. 33.)

[214] Mulhall, Dictionary of Statistics, p. 545.

[215] Cf. Marshall, Principles of Economics, vol. i. p. 315.

[216] D.A. Wells, Contemporary Review, 1889, p. 392.

[217] Taylor, Modern Factory System, p. 435.

[218] Cf. the comparison of conditions of town and country labour in Adam Smith's Wealth of Nations, Bk. I., chap. x., part 2.

[219] Diseases of Occupations, pp. 25, 26.

[220] The Social Horizon, p. 22.

[221] Ure, Philosophy of Manufactures, chap. i. p. 19.

[222] Marshall, Principles of Economics, p. 265.