unfavorable circumstances obtains a value proportioned to its cost of production; all the portions raised in more favorable circumstances, [pg 280] selling as they must do at the same value, obtain a value more than proportioned to their cost of production.
The owners, however, of those portions of the produce enjoy a privilege; they obtain a value which yields them more than the ordinary profit. The advantage depends on the possession of a natural agent of peculiar quality, as, for instance, of more fertile land than that which determines the general value of the commodity; and when this natural agent is not owned by themselves, the person who does own it is able to exact from them, in the form of rent, the whole extra gain derived from its use. We are thus brought by another road to the Law of Rent, investigated in the concluding chapter of the Second Book. Rent, we again see, is the difference between the unequal returns to different parts of