For the source of any characteristic so widespread and uniform as this adaptation to environment we must go back to the very beginning of the human race.

In America the most widespread type of forest is the evergreen coniferous woodland of the north.

Year by year we are learning that in this restless, strenuous American life of ours vacations are essential.

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 Negro, however, has been tested on an extensive scale.

The whole history of life is a record of cycles.

For the source of any characteristic so widespread and uniform as this adaptation to environment we must go back to the very beginning of the human race.