Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.

Simple typographical errors were corrected; occasional unbalanced quotation marks retained.

Ambiguous hyphens at the ends of lines were retained; occurrences of inconsistent hyphenation have not been changed.

Illustrations have been moved to appear between paragraphs. In versions of this eBook that support links, the List of Illustrations links to the correct images, not necessarily to the listed page numbers.

The printed captions of illustrations usually are shown here in upper-case, as they were in the original book. Some illustrations bore signatures, rather than printed captions; those are shown here in lower-case, followed by the full names, taken from the List of Illustrations.

Many captions in the original book did not exactly match the words in the List of Illustrations; those differences have been retained here.

The symbols in the lists of books at the beginning and end of this eBooks are right-pointing hands.