The words are, “enable the labourers to maintain a stationary or an increasing population” (_Pol. Econ._, 1836, p. 218). The awkwardness of the sentence may be due to bad editing; but we read elsewhere of the “_price of wages_.” Footnote 611: _Pol. Econ._, 1836, pp. 218, 223. Footnote 612: See Lassalle and Marx. Footnote 613: Cf. Malthus, _Pol. Econ._ (1836), pp. 224, 225, &c. _Essay on Population_, 7th ed., III viii. 323, but especially IV. xiii. 473. See also Rogers, _Six Centuries_, ch. viii., ‘The Famine and the Plague,’ especially pp. 233–242. Footnote 614: Malthus, _Essay on Pop._, IV. xiii. 473; cf. pp. 373 and 434. Footnote 615: Cf. especially _Essay on Pop._ (2nd ed.), III. ix. 444. “The price of labour has been rising—not to fall again.” Footnote 616: _Emigr. Comm._ (1827), p. 326, qu. 3411; cf. 3408, 3409. Cf. above, p. 197. Footnote 617: The chief of them being the rate of profits which is at the given time enough to induce the “undertaker” (or “enterpriser”) to continue business. Footnote 618: See Mill on Thornton’s ‘Labour,’ _Fortnightly Review_, May 1869. Cf. Walker on _The Wages Question_, pp. 140 _seq._ Footnote 619: So in _Quarterly Review_, Jan. 1824, p. 315, Malthus says profits depend rather on the demand for produce than on the demand for labour. Footnote 620: _Discourse on Pol. Econ._, by J. R. MacCulloch, pp. 61, 62 (1st and 2nd edd.), 1825. Footnote 621: _Conversations on Pol. Econ._, 1817 (1st and 2nd edd.), p. 137. Mrs. Marcet’s memory is preserved for latter-day readers by Macaulay’s reference to her in the essay on Milton. Footnote 622: _Discourse_, _l. c._ Cf. MacC.’s _Pol. Econ._, Pt. III. ch. ii. p. 378 (ed. 1843); Prof. Fawcett’s _Manual of Pol. Econ._, p. 131 (1876). Footnote 623: James Mill, _Elem._ (1821), p. 25; John Mill, _Principles_, II. xi. § 1. Cf. _Fort. Rev._, 1869, May; Thornton, _Labour_, II. i. p. 83. Footnote 624: _Wealth of Nations_, I. viii. p. 31, 2. Footnote 625: _Ibid._, IV. ix. 306, 1. Footnote 626: _Ibid._, IV. ix. 310, 2. Footnote 627: _Ibid._, V. i. 327, 2. Footnote 628: _Pol. Econ._, ed. 1836, ch. iv. sect. ii. p. 224. Footnote 629: _Ibid._ ed. 1820, ch. iv. p. 248. Footnote 630: _Quarterly Review_, Jan. 1824. Cf. below, p. 288. Footnote 631: Supplement to _Encyclopædia Britannica_. Cf. above, p. 71. Footnote 632: Empson in _Edin. Rev._, Jan. 1837, p. 496. Footnote 633: _Quart. Rev._, Jan. 1824 (no. lx.), pp. 333–4. Footnote 634: Ricardo, _Pol. Econ. and Tax._, ch. i. sections iv., v.; _Works_, pp. 20, 25. Cf. Malthus, _Pol. Econ._, 1820, p. 104, and the whole of section iii. pp. 72 _seq._ Footnote 635: _Quart. Rev._, _l. c._ p. 324; cf. p. 315. Cf. above. Footnote 636: _Pol. Econ. and Tax._, ch. i. sections iv. and v. Footnote 637: Any given value, it might be added, is influenced by custom as well as competition. Footnote 638: