This book, "Proboscidea. A monograph of the discovery, evolution, migration and extinction of the mastodonts and elephants of the world. Volume 1", by Henry Fairfield Osborn, is a replication of a book originally published before 1936. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.