e been left with little. We shall also discover what wonderful
things men are doing to make up for the failures of Nature, and to make
habitable many of those places which she left uninhabitable.

The forests of the eastern half of the country have been thinned out.
West of the Mississippi River there are thousands of square miles of
prairies where there are almost no trees. In such places the first
settlers had difficulty in getting firewood, and had to build their
houses of earth or stone.

Upon the northwest coast there is fog and rain and little sunshine.
There the forests grow so dense that it is difficult to travel through
them. In the deserts of the Southwest the sun shines out of a cloudless
sky almost every day in the year. The ground becomes very dry and the
living things found there have strange and curious habits.

In the Central and Eastern states there is much coal; and because of
this, millions of people have gathered there to engage in manufacturing.
In California coal is scarce and has to be brought from other parts of
the earth.

The vast prairies of the Mississippi Valley are covered with fields of
waving grain, much of which is shipped to distant regions. In New
England much of the soil is rocky and not enough grain is raised there
to supply the needs of the population.

[Illustration: _U. S. Office of Farm Management (J. S. Cotton)_
A farming scene in the fertile valley of the Missouri River.]

The work that people do in different places is determined by the way in
which Nature has distributed her resources. The farmers are mostly found
in the valleys where the soil is best. Cattle are pastured on those
lands not suited to farming. The miners go to the mountains, where they
can more easily find the minerals they are after. The lumberman finds
his work where the climate favors the growth of forest trees. The
manufacturer seeks the waterfalls, where there is power to turn his
mills.

Now let us try to discover in how far we can change Nature's plan and
make habitable those places which she left uninhabitable. There are some
things which we cannot do. We cannot make the air warmer or colder. We
cannot cause rain to fall even though the fields are parched with
drought. We cannot stop the rain falling, and we cannot stop the winds
blowing.

[Illustration: _H. W. Fairbanks_
The prickly pear in its desert home.]

While we cannot stop the water falling from the clouds, we can drain the
l