If the balance be even, and if the trade between the two places consist altogether in the exchange of their native commodities, they will, upon most occasions, not only both gain, but they will gain equally, or very near equally: each will in this case afford a market for a part of the surplus produce of the other: each will replace a capital which had been employed in raising and preparing for the market this part of the surplus produce of the other, and which had been distributed among, and given revenue and maintenance to a certain number of its inhabitants. Some part of the inhabitants of each, therefore, will indirectly derive their revenue and maintenance from the other. As the commodities exchanged, too, are supposed to be of equal value, so the two capitals employed in the trade will, upon most occasions, be equal, or very nearly equal; and both being employed in raising the native commodities of the two countries, the revenue and maintenance which their distribution will afford to the inhabitants of each will be equal, or very nearly equal. This revenue and maintenance, thus mutually afforded, will be greater or smaller in proportion to the extent of their dealings. If these should annually amount to a hundred thousand pounds, for example, or to a million on each side, each of them will afford an annual revenue in the one case of a hundred thousand pounds, in the other, of a million, to the inhabitants of the other.
If their trade should be of such a nature that one of them exported to the other nothing but native commodities, while the returns of that other consisted altogether in foreign goods; the balance, in this case, would still be supposed even, commodities being paid for with commodities. They would, in this case, too, both gain, but they
