Retained publisher information from the printed copy (the electronic edition is in the public domain in the country of publication).
Corrected some palpable typos.
Reformatted column headings of tables for readable display on smaller windows (even so, some tables are up to 80 characters wide, and one takes 100 characters).
Resized images from original 8½×11 plates (thus, scale indications in captions are relative).
Created an original cover image for free, unrestricted use with this eBook.
In the text versions only, text in italics is delimited by _underscores_.