Transcriber's notes
Obvious typos have been corrected, but obsolete spellings have been retained (e.g. “develope”, “controul”, “recal”).
Inconsistent hyphenation (e.g. “co-exist” and “coexist”) has been retained.
Footnotes have been numbered consecutively and gathered at the end of each lecture.
The original edition sometimes lacked appropriate opening or closing quotation marks; they have been added where evident based on other editions of the work.
Greek characters follow the original and may contain diacritical errors. Transliterations of Greek passages are available as “mouseovers” in the HTML version of this document.