_Six Centuries of Work and Wages_, ch. xii., esp. p. 345. Footnote 565: The facts of Malthus’ “review” may be roughly given in the following diagram, where the bar indicates the wheat earned per day by the agricultural labourer. The amount for 1350 assumes that the Statute of Labourers was successful. One peck. Two pecks. 1340 (before Plague) :-------------- : : 1350 (after Plague) :----------------- : : 1400 :-------------------: : 1500 :-------------------:-------------------: 1603 :----------------- : : 1650 :----------- : : 1699 :-------------------: : 1730 :-------------------: : 1766 :------------------ : : 1811 :------------------ : : 1822 (?) :-------------------: : Add 1884, taking wages ------------------------------------ at 14_s._ a week and wheat at 36_s._ a quarter, or 1_s._ 1½_d._ a peck. Footnote 566: 7th ed., pp. 321 _seq._ (Bk. III. ch. viii.), first in 1817. Footnote 567: Cf. above, p. 225 n. In _Pol. Econ._ (1820), p. 432, he says, “All the great results in _Pol. Econ._ respecting wealth depend upon proportions.” 2nd ed. added (p. 376), “not only there, but throughout the whole range of nature and art.” So he thinks a peck of wheat a good “middle point” of wages. _Pol. Econ._ (1820), p. 284, (1836) p. 254. Footnote 568: _Essay_, 7th ed., Bk. III. ch. ix. pp. 328 _seq._ Cf. pp. 334, 338. Footnote 569: _Ibid._, p. 332. Footnote 570: _Ibid._, Bk. III. ch. x. pp. 334 _seq._ Footnote 571: See above, p. 201 n. Cf. _Essay on Pop._, 7th ed., p. 337. Footnote 572: _Essay_, _l. c._ p. 338. Footnote 573: _l. c._ Bk. III. ch. x. pp. 338–9. Footnote 574: _Fortnightly Review_, Nov. 1881, his last writing. Cf. _Essay_, _l. c._ pp. 340–342. Footnote 575: In two long chapters on Corn Laws and Bounties, _Essay on Pop._, Bk. III. ch. xi. pp. 343–367. Cf. above, pp. 226 _seq._ Footnote 576: See below, Bk. IV. Footnote 577: _The Measure of Value stated and illustrated, with an application of it to the alteration in the value of the English currency since 1790._ (April) 1823. Footnote 578: So _Tract on Value_, p. 1. But in _Definitions_ value is “the relation of one object to some other or others, in exchange, resulting from the estimation in which a thing is held” (def. 40, 41; cf. with def. 5). Footnote 579: Adam Smith, _Wealth of Nations_, I. v. Footnote 580: _Measure of Value_, p. 23. Cf. _Pol. Econ._ (1820), pp. 126 _seq._; (1836), pp. 84, 93 _seq._ Footnote 581: