I have already attempted to shew, that the market price of corn, would, under an increased demand from the effects of a bounty, exceed its natural price, till the requisite additional supply was obtained, and that then it would again fall to its natural price. But the natural price of corn is not so fixed as the natural price of commodities; because, with any great additional demand for corn, land of a worse quality must be taken into cultivation, on which more labour will be required to produce a given quantity, and the natural price of corn would be raised. By a continued bounty, therefore, on the exportation of corn, there would be created a tendency to a permanent rise in the price of corn, and this, as I have shewn elsewhere,[39] never fails to raise rent. Country gentlemen then have not only a temporary but a permanent interest in prohibitions of the importation of corn, and in bounties on its exportation; but manufacturers have no permanent interest in a bounty on the exportation of commodities, their interest is wholly temporary. A bounty on the exportation of manufactures will undoubtedly, as Dr. Smith contends, raise the market price of manufactures, but it will not raise their natural price. The labour of 200 men will produce double the quantity of these goods that 100 could produce before; and consequently, when the requisite quantity of capital was employed in supplying the requisite quantity of manufactures, they would again fall to their natural price. It is then only during the interval after the rise in the market price of commodities, and before the additional supply is obtained, that the manufacturers will enjoy high profits; for as soon as prices had subsided, their profits would sink to the general level.