It will be a vast boon to mankind when we learn to prophesy the precise dates when cycles of various kinds will reach definite stages.

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.

A journey of four hundred and thirty miles can be made in any part of the United States, but in Turkey it takes as many days.

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

The buffalo is a surprisingly stupid animal.

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.

Although mountains may guide migrations, the plains are the regions where people dwell in greatest numbers.