extent to which land, capital, and entrepreneur ability are present to
combine with those laborers. Where there is a large supply of these
factors, many laborers can be set to work. Thus one way of increasing
the demand for labor is to increase the supply of land, capital, and
entrepreneur ability.

The available supply of land can be increased by several methods.
Irrigation, reclamation, and dry farming increase the available supply
of farm land. The fertility of land may be retained and increased by
manuring, rotation of crops, and careful husbandry. Improved
agricultural machinery will also enable land to be used in larger
quantities and in more productive ways. And while we do not think of
man as actually creating land, the draining of swamps and the filling
in of low places increases the available amount of both farm and urban
land. By whatever means the amount of available land is increased, the
effect is to open more avenues to the employment of laborers.

The supply of capital may be increased chiefly by the practice of
thrift among all classes of the population. Capital arises most
rapidly when individuals produce as much as possible, and spend as
little as possible for consumers' goods. Any measure which will
discourage the well-to-do from wasteful or luxurious ways of living,
and at the same time encourage the poor to save systematically, even
though they save only a trifle, will add to the supply of available
capital. Every increase in the supply of capital will enable more and
more laborers to be set to work.

Entrepreneur ability may be increased by a variety of methods. The
training of men for business callings increases the supply of
entrepreneurs. Taxes on inheritances, excess profits, and the unearned