Thus the races, though alike in their physical response to climate, may possibly be different in their mental response because they have approached America by different paths.

Nevertheless most of the evergreen forests of the north must always remain the home of wild animals and trappers, a backward region in which it is easy for a great fur company to maintain a practical monopoly.

Fertile soil, level plains, easy passage across the mountains, coal, iron, and other metals imbedded in the rocks, and a stimulating climate, all shower their blessings upon man.

The whole history of life is a record of cycles.

America forms the longest and straightest bone in the earth's skeleton.

Thus the races, though alike in their physical response to climate, may possibly be different in their mental response because they have approached America by different paths.

From first to last the civilization of America has been bound up with its physical environment.