[Transcriber’s Note]

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

Simple typographical errors were corrected.

Ambiguous hyphens at the ends of lines were retained.

Some words were printed both with and without accent marks. The ones clearly meant to be the same (e.g., Index references to the other form) were changed; the rest appear both ways.

Devices unable to display Greek and some other symbols may substitute question marks or other placeholders.