Transcriber's Notes:
1. Minor changes have been made to correct obvious typesetters’ errors; otherwise, every effort has been made to remain true to the author’s words and intent.
2. The original book did not have a Table of Contents; one has been added for the reader’s convenience.
3. German readers may find it unusual that German nouns have not been capitalized; the book did not follow the German convention, and the transcriber has not changed that in this e-text.