The whole history of life is a record of cycles..

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….

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 ea….

In fact, the history of North America has been perhaps more profoundly influenced by man's inheritance from his past homes than by the physical featu….