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

Simple typographical errors were corrected; occasional unbalanced quotation marks retained. The spelling of non-English words was not checked or corrected.

Ambiguous hyphens at the ends of lines were retained.

In the original text, Figures and Footnotes were numbered from “1” in each chapter. Here, they are numbered in a single sequence for the entire eBook, and references to them have been adjusted accordingly.

Inconsistent font styles (normal, italics, small-caps) of the abbreviation “Fig.” in illustration captions have regularized to the predominant form, “normal” (no italics, no small-caps).

Index not checked for proper alphabetization or correct page references.

Transcriber modified the illustration on page 70 to make the reference points easier to find.

Page 184: No closing single quotation mark for text beginning “‘completely indicated”.