Volume I of this eBook is available at Project Gutenberg as eText #41979.

Simple typographical errors were corrected, including some Index references to Volume I. No attempt was made to ensure the accuracy of the Index.

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

The Table of Contents listed the Appendix as beginning on page 264; it begins on page 235 and is shown that way in this eBook.

Tables on pages 265-269 have been segmented to fit within Project Gutenberg's width requirements. The first column of the original tables has been duplicated in each of the segments to make them easier to read.