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.

Ambiguous hyphens at the ends of lines were retained.

The hierarchy of the Table of Contents has been used as the guide to the rest of the book, even though the two sometimes differ.

Index not checked for proper alphabetization or correct page references.

Page 26: “P R S” has an underline below “P” and a double-underline below “R”.

Page 34: “flexed far toward” perhaps should be “forward”.

Page 79: “as well all the details” may be missing “as” after “well”.

Page 117: “all vertebra above, so to speak” perhaps should be “vertebrae”.

Page 147: “this move is predicated” was printed as “this more was predicated”; changed here.

Page 158: “Posterior, right, inferior—P.R.I.” was printed as “P.R.L.”; changed here.

Page 187: “but is claimed” probably should be “but it is claimed”.

Page 307: “has been builded” was printed that way.