", if it appears in a caption to a Collotype Plate, links back to the Note describing that Plate. The symbol "

", if it appears in a caption to a figure, links to a larger version of the illustration. The extra-large images are available only in the html version. Most of the images have been refurbished, which means radically brightened, whitened, and sharpened. The [Collotype Plates], however, have been subjected to only minor brightening and sharpening in the midrange, since radical changes necessarily destroy detail.

Most of the footnotes are renumbered into a single sequence and moved from the ends of pages to the ends of major sections, which are: the Author’s Preface, Part I, Part II, Appendix A, and Appendix B. Footnotes in the section "Notes on the Collotype Plates" are relocated to the end of the relevant Plate description.

Ditto marks are generally deleted, and replaced with repeated text if necessary. Large curly brackets, "{" or "}", used to indicate combination or grouping of information on two or more lines, have been eliminated from this ebook. Such information has been recast if necessary, preferring minimal changes, to retain the original meaning. The complex tables on page [72] and pages [162–3] are examples of such recasting.

Page [viii]: "ornamention" was changed to "ornamentation".

Page [214]: "illluminated borders" changed to "illuminated borders".

Page [227]: The Figure originally marked "Fig. 134a" on this page was changed to "Fig. 134d."

Page [239]: The complex table was recast as a nested list.