Many of the questions both in morals and politics seem to be of the nature of the problems de maximis and minimis in fluxions; in which there is always a point where a certain effect is the greatest, while on either side of this point it gradually diminishes.

With a view to the permanent happiness and security from great reverses of the lower classes of people in this country, I should have little hesitation in thinking it desirable that its agriculture should keep pace with its manufactures, even at the expense of retarding in some degree the growth of manufactures; but it is a different question, whether it is wise to break through a general rule, and interrupt the natural course of things, in order to produce and maintain such an equalization.

3dly. It may be urged, that though a comparatively low value of the precious metals, or a high nominal price of corn and labour, tends rather to check commerce and manufactures, yet its effects are permanently beneficial to those who live by the wages of labour.

If the labourers in two countries were to earn the same quantity of corn, yet in one of them the nominal price of this corn were twenty five per cent higher than in the other, the condition of the labourers where the price of corn was the highest, would be decidedly the best. In the purchase of all commodities purely foreign; in the purchase of those commodities, the raw materials of which are wholly or in part foreign, and therefore influenced in a great degree by foreign prices, and in the purchase of all home commodities which are taxed, and not taxed ad valorem, they would have an unquestionable advantage: and these articles altogether are not inconsiderable even in the expenditure of a cottager.

As one of the evils therefore attending the throwing open our ports, it may be stated, that if the stimulus to population, from the cheapness of grain, should in the course of twenty or twenty five years reduce the earnings of the labourer to the same quantity of corn as at present, at the same price as in the rest of Europe, the condition of the lower classes of people in this country would be deteriorated. And if they should not be so reduced, it is quite clear that the encouragement to the growth of corn will not be fully restored, even after the lapse of so long a period.

4thly. It may be observed, that though it might by no means be advisable to commence an artificial system of regulations in the trade of corn; yet if, by such a system already established and other concurring causes, the prices of corn and of many commodities had been raised above the level of the rest of Europe, it becomes a different question, whether it would be advisable to risk the effects of so great and sudden a fall in the price of corn, as would be the consequence of at once throwing open our ports. One of the cases in which, according to Dr Smith, "it may be a matter of deliberation how far it is proper to restore the free importation of foreign goods after it has been for some time interrupted, is, when particular manufactures, by means of high duties and prohibitions upon all foreign goods which can come into competition with them, have been so far extended as to employ a great multitude of hands.(2*)"

That the production of corn is not exempted from the operation of this rule has already been shown; and there can be no doubt that the interests of a large body of landholders and farmers, the former to a certain extent permanently, and the latter temporarily, would be deeply affected by such a change of policy. These persons too may further urge, with much appearance of justice, that in being made to suffer this injury, they would not be treated fairly and impartially. By protecting duties of various kinds, an unnatural quantity of capital is directed towards manufactures and commerce and taken from the land; and while, on account of these duties, they are obliged to purchase both home-made and foreign goods at a kind of monopoly price, they would be obliged to sell their own at the price of the most enlarged competition. It may fairly indeed be said, that to restore the freedom of the corn trade, while protecting duties on various other commodities are allowed to remain, is not really to restore things to their natural level, but to depress the cultivation of the land below other kinds of industry. And though, even in this case, it might still be a national advantage to purchase corn where it could be had the cheapest; yet it must be allowed that the owners of property in land would not be treated with impartial justice.

If under all the circumstances of the case, it should appear impolitic to check our agriculture; and so desirable to secure an independent supply of corn, as to justify the continued interference of the legislature for this purpose, the next question for our consideration is;

Fifthly, how far and by what sacrifices, restrictions upon the importation of foreign corn are calculated to attain the end in view.

With regard to the mere practicability of effecting an independent supply, it must certainly be allowed that foreign corn may be so prohibited as completely to secure this object. A country with a large territory, which determines never to import corn, except when the price indicates a scarcity, will unquestionably in average years supply its own wants. But a law passed with this view might be so framed as to effect its object rather by a diminution of the people than an increase of the corn: and even if constructed in the most judicious manner, it can never be made entirely free from objections of this kind.