Minor typographical errors have been corrected without note where the author's
original intent was clear.
Punctuation and spelling were made consistent when a predominant
form was found in this book; otherwise they were not changed.
Ambiguous hyphens at the ends of lines were retained.
Mid-paragraph illustrations have been moved between paragraphs
and some illustrations have been moved closer to the text that
references them. The List of Illustrations paginations and those
in image captions were not corrected.
Footnotes were moved to the ends of the chapters in which they
belonged and numbered in one continuous sequence. The pagination
of index entries which referred to these footnotes was not
changed to match their new locations so they refer to the pages
in the main text where the footnotes are referenced.
The index entry for "Manufacture of Cards, extensive ... at
Venice, 1441;...." lacked a page reference. That text was found
to be on page 194 and was added to the index entry.