Punctuation and spelling were made consistent when a predominant preference was found for the same author in this book; otherwise they were not changed.

Simple typographical errors were corrected; occasional unbalanced quotation marks corrected in simple situations, otherwise unchanged.

Ambiguous hyphens at the ends of lines were retained.

Editor's comments at the beginning of each Chapter originally were printed at the bottom of the page, but have been repositioned here to appear just below the Chapter titles.

Page 49: "corollory" was printed that way.

Page 80: "than an hours spent" was printed that way.

Page 148: "perserver" may be a misprint for "preserver".

Page 163: "Circeronianus" was printed that way.

Page 346: "I enjoyed it an turned" probably is a misprint for "and".