the gifts of nature which exist in
boundless quantity. With a given quantity of materials, and with the
assistance of the pressure of the atmosphere, and the elasticity of
steam, engines may perform work, and abridge human labour to a very
great extent; but no charge is made for the use of these natural aids,
because they are inexhaustible, and at every man's disposal. In the same
manner the brewer, the distiller, the dyer, make incessant use of the
air and water for the production of their commodities; but as the supply
is boundless, it bears no price.[5] If all land had the same
properties, if it were boundless in quantity, and uniform in quality, no
charge could be made for its use, unless where it possessed peculiar
advantages of situation. It is only then because land is of different
qualities with respect to its productive powers, and because in the
progress of population, land of an inferior quality, or less
advantageously situated, is called into cultivation, that rent is ever
paid for the use of it. When, in the progress of society, land of the
second degree of fertility is taken into cultivation, rent immediately
commences on that of the first quality, and the amount of that rent will
depend on the difference in the quality of these two portions of land.
When land of the third quality is taken into cultivation, rent
immediately commences on the second, and it is regulated as before, by
the difference in their productive powers. At the same time, the rent of
the first quality will rise, for that must always be above the rent of
the second, by the difference between the produce which they yield with
a given quantity of capital and labour. With every step in the progress
of population, which shall oblige a country to have recourse to land of
a worse quality, to enable it to raise its supply of food, rent, on all
the more fertile land, will rise.
Thus suppose land--No. 1, 2, 3,--to yield, with an equal employment of
capital and labour, a net produce of 100, 90, and 80 quarters of corn.
In a new country, where there is an abundance of fertile land compared
with the population, and where therefore it is only necessary to
cultivate No. 1, the whole net produce will belong to the cultivator,
and will be the profits of the stock which he advances. As soon as
population had so far increased as to make it necessary to cultivate No.
2, from which ninety quarters only can be obtained after supporting the
labourers, rent
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