On LimitationsJohn Wesley Powell, soldier, geologist, explorer of the American West (1834-1902)This ebook presents «On Limitations», from John Wesley Powell. A dynamic table of contents enables to jump directly to the chapter selected.Table of Contents-01- About this book-02- ARCHÆOLOGY-03- PICTURE WRITING-04- HISTORY, CUSTOMS, AND ETHNIC CHARACTERISTICS-05- ORIGIN OF MAN-06- LANGUAGE-07- MYTHOLOGY-08- SOCIOLOGY-09- PSYCHOLOGY