But a diminution in the real price of corn is still more efficient, in preventing the future improvement of land, than in throwing land, which has been already improved, out of cultivation. In all progressive countries, the average price of corn is never higher than what is necessary to continue the average increase of produce. And though, in much the greater part of the improved lands of most countries, there is what the French economists call a disposable produce, that is, a portion which might be taken away without interfering with future production, yet, in reference to the whole of the actual produce and the rate at which it is increasing, there is no part of the price so disposable. In the employment of fresh capital upon the land to provide for the wants of an increasing population, whether this fresh capital be employed in bringing more land under the plough or in 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 proportionate 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. It was a fatal mistake in the system of the Economists to consider merely production and reproduction, and not the provision for an increasing population, to which their territorial tax would have raised the most formidable obstacles. On the whole then considering the present accumulation of manufacturing population in this country, compared with any other in Europe, the expenses attending enclosures, the price of labour and the weight of taxes, few things seem less probable, than that Great Britain should naturally grow an independent supply of corn; and nothing can be more certain, than that if the prices of wheat in Great Britain were reduced by free importation nearly to a level with those of America and the continent, and if our manufacturing prosperity were to continue increasing, it would incontestably answer to us to support a part of our present population on foreign corn, and nearly the whole probably of the increasing population, which we may naturally expect to take place in the course of the next twenty or twenty five years. The next question for consideration is, whether an independent supply, if it do not come naturally, is an object really desirable and one which justifies the interference of the legislature.