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He sells, therefore, his rude produce for money, with which he

can purchase, wherever it is to be had, the manufactured produce

he has occasion for. Land even replaces, in part at least, the

capitals with which fisheries and mines are cultivated. It is the

produce of land which draws the fish from the waters; and it is

the produce of the surface of the earth which extracts the

minerals from its bowels.

The produce of land, mines, and fisheries, when their natural

fertility is equal, is in proportion to the extent and proper

application of the capitals employed about them. When the

capitals are equal, and equally well applied, it is in proportion

to their natural fertility.