[227] 'Real value in exchange may be defined to be the power of an object to command in exchange the necessaries and conveniences of life, including labour,' Malthus, Pol. Econ. (1820), p. 62. 'Wages are to be estimated by their real value, namely, by the quantity of labour and capital employed in producing them,' Ricardo, Pol. Ec. 2nd ed. 1819, p. 44, Wks., p. 32.
[228] See Pol. Econ. and Tax. ch. xxi. 'Effects of Accumulation on Profits and Interest.'
[229] The arrangement is altered, and we have such significant changes as 'almost exclusively' instead of 'solely.'
[230] Franked by himself.
[231] See Wks. p. 176. 'Malthus and his Work,' p. 294.
[232] See Ricardo, Wks. pp. 110-112.
[233] A Sinking Fund.
[234] This simile is used by Malthus in Quart. Rev. Jun. 1824, with 'old wine' in place of 'oak trees.'
[235] Franked by himself. Date only on cover.
[236] Perhaps the passage beginning at foot of p. 41 of Wks. and pp. 65-6 of 2nd ed. of Pol. Ec. and Tax. (where he is describing the effect of agricultural improvements), 'With the same population and no more, there can be no demand for any additional quantity of corn,' etc. etc., as far as the sentence, 'A considerable period would have elapsed attended with a positive diminution of rent.'