[Transcriber's Notes]

The Index in this eBook uses Roman numerals to reference all twenty volumes of this series. Most of those volumes are available at no charge from Project Gutenberg:

VOL.PROJECT GUTENBERG EBOOK
I:[http://www.gutenberg.org/ebooks/10471]
II:[http://www.gutenberg.org/ebooks/10643]
III:[http://www.gutenberg.org/ebooks/10748]
IV:[http://www.gutenberg.org/ebooks/10921]
V:[http://www.gutenberg.org/ebooks/10993]
VI:[http://www.gutenberg.org/ebooks/11180]
VII:[http://www.gutenberg.org/ebooks/11527]
VIII:[http://www.gutenberg.org/ebooks/11659]
IX:[http://www.gutenberg.org/ebooks/12059]
X:[http://www.gutenberg.org/ebooks/12572]
XI:[http://www.gutenberg.org/ebooks/12745]
XII:[http://www.gutenberg.org/ebooks/12845]
XIII:[http://www.gutenberg.org/ebooks/13620]
XIV:[http://www.gutenberg.org/ebooks/25009]
XV:[http://www.gutenberg.org/ebooks/25509]
XVI:not available when this eBook was produced
XVII:[http://www.gutenberg.org/ebooks/44640]
XVIII:not available when this eBook was produced
XIX:[http://www.gutenberg.org/ebooks/23998]
XX:this volume

Links to those volumes have been included for use on devices that support them. The links are to the volumes, not to the specific pages. However, references to this volume (XX) are linked to the pages. No links are given for volumes XVI and XVIII, as they were not available at Project Gutenberg when this eBook was produced.

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

Simple typographical errors were corrected; occasional unbalanced quotation marks corrected in simple situations, otherwise unchanged.

Ambiguous hyphens at the ends of lines were retained.

Editor's comments at the beginning of each Chapter originally were printed at the bottom of the page, but have been repositioned here to appear just below the Chapter titles.

This eBook contains references to other volumes in this series, most of which are available at no charge from Project Gutenberg: