with the same country, and to export and import the same commodities. The difference, therefore, in what their imports cost them, depended solely on the other cause, the unequal efficiency of their labour. They gave the same quantities; the difference could only be in the cost of production. But if England traded to Germany with cloth, and France with iron, the comparative demand in Germany for those two commodities would bear a share in determining the comparative cost, in labour and capital, with which England and France would obtain German products. If iron were more in demand in Germany than cloth, France would recover, through that channel, part of her disadvantage; if less, her disadvantage would be increased. The efficiency, therefore, of a country's labour, is not the only thing which determines even the cost at which that country obtains imported commodities—while it has no share whatever in determining either their exchange value, or, as we shall presently see, their price.
