Chapter Xi Where This Argument Is Materially Strengthened. the Points Here

made, however, seem adequate.

Jevons, Principles of Economics, 1905 (posthumous), p. 50.

Walker, op. cit., p. 5.

Marx, op. cit., vol. I, chap. I.

Laughlin, Elements, p. 77. Cf. also, Ely, op. cit., 99-100.

Ibid., p. 18. It is interesting to note that Professor Irving Fisher so defines wealth and value as to divorce the two concepts. Wealth includes free human beings, who cannot be exchanged, while the idea of value is derived from that of price, which, in turn, comes from the ideas of exchange and transfer. (Nature of Capital and Income, chap. I.)

Principles, pp. 8-11.

Money, p. 288.

Cf. Kinley, op. cit., Merriam, loc. cit., and Carver, "The Concept of an Economic Quantity," loc. cit. Cf. also, Laughlin, Money, 1903, pp. 14-16; and Davenport, Value and Distribution, p. 181, n.