Italic text is denoted by _underscores_.
Footnote anchors are denoted by [number], and the footnotes have been
placed at the end of the chapter.
A superscript is denoted by ^x or ^{xx}, for example und^r or 36^{th}.
Corrigenda on page xiv have been applied to the etext except for
illustration corrections.
Illustrations without captions have had a description added.
Some minor changes to the text are noted at the end of the book.
[Illustration: