cost at which a certain degree of luxury could be enjoyed, might induce people, in that prospect, to make fresh savings for a lower profit than they formerly were willing to do. When foreign trade makes room for more capital at the same profit, it is by enabling the necessaries of life, or the habitual articles of the labourer's consumption, to be obtained at smaller cost It may do this in two ways; by the importation either of those commodities themselves, or of the means and appliances for producing them. Cheap iron has, in a certain measure, the same effect on profits and the cost of labour as cheap corn, because cheap iron makes cheap tools for agriculture and cheap machinery for clothing. But a foreign trade which neither directly, nor by any indirect consequence, increases the cheapness of anything consumed by the labourers, does not, any more than an invention or discovery in the like case, tend to raise profits or retard their fall; it merely substitutes the production of goods for foreign markets, in the room of the home production of luxuries, leaving the employment for capital neither greater nor less than before. It is true, that there is scarcely any export trade which, in a country that already imports necessaries or materials, comes within these conditions: for every increase of exports enables the country to obtain all its imports on cheaper terms than before.
A country which, as is now the case with England, admits food of all kinds, and all necessaries and the materials of necessaries, to be freely imported from all parts of the world, no longer depends on the fertility of her own soil to keep up her rate of profits, but on the soil of the whole world. It remains to consider how far this resource can be counted upon, for making head during a very long period against the tendency of profits to decline as capital increases.
It must, of course, be supposed that with the increase of capital, population also increases; for if it did not, the consequent rise of wages would bring down profits, in spite of any
