Transcriber’s Notes
Reading edition
Retained publication information from the printed edition: this eBook is public-domain in the country of publication.
Silently corrected a few palpable typos.
Moved illustrations to the nearest paragraph break.
In the text versions only, text in italics is delimited by _underscores_.
In the text versions only, superscript text is preceded by caret.
In the ASCII version only, subscripted numbers are preceded by underscore and delimited by brackets.