There are clues, however, and the author follows some of them in this book, bringing us to a conclusion which he feels is the most obvious. Because this book is easy to read it is recommended for young readers as well as old.

This is a new release of the original 1943 edition.

This Is A New Release Of The Original 1919 Edition.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This is a new release of the original 1926 edition.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This Is A New Release Of The Original 1920 Edition.