We are learning, too, that the love of beauty is one of Nature's greatest healers.

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

The buffalo is a surprisingly stupid animal.

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

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.

Man could not stay there forever. He was bound to spread to new regions, partly because of his innate migratory tendency and partly because of Nature's stern urgency.

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