"In the employment of fresh capital upon the land, to provide for the wants of an increasing population, whether this fresh capital is employed in bringing more land under the plough, or improving land already in cultivation, the main question always depends upon the expected returns of this capital; and no part of the gross profits can be diminished, without diminishing the motive to this mode of employing it. Every diminution of price, not fully and immediately balanced by a proportioned fall in all the necessary expenses of a farm, every tax on the land, every tax on farming stock, every tax on the necessaries of farmers, will tell in the computation; and if, after all these outgoings are allowed for, the price of the produce will not leave a fair remuneration for the capital employed, according to the general rate of profits, and a rent at least equal to the rent of the land in its former state, no sufficient motive can exist to undertake the projected improvement." Observations, p. 22. [55] See p. 124. [56] See p. 70, &c. [57] It is not necessary to state on every occasion, but it must be always understood, that the same effect will be produced by employing different, but equal portions of capital on the land already in cultivation, with different results. Rent is the difference of produce obtained with equal capitals, and with equal labour on the same, or on different qualities of land. [58] Observations on the Corn Laws, p. 4. [59] Upon shewing this passage to Mr. Malthus, at the time when these papers were going to the press, he observed, "that in these two instances he had inadvertently used the term _real price_, instead of _cost of production_." It will be seen from what I have already said, that to me it appears, that in these two instances he has used the term _real price_ in its true and just acceptation, and that in the former case only it is incorrectly applied. [60] Page 40. [61] Manufactures, indeed, could not fall in any such proportion, because, under the circumstances supposed, there would be a new distribution of the precious metals among the different countries. Our cheap commodities would be exported in exchange for corn and gold, till the accumulation of gold should lower its value, and raise the money price of commodities. [62] The Grounds of an Opinion, &c. page 36. [63] Mr. Malthus, in another part of the same work, supposes commodities to vary 25 or 20 per cent. when corn varies 33-1/3. [64] In Chap. 24. I have observed, that the real resources of a country, and its ability to pay taxes, depend on its net, and not on its gross income.