--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_.