This document has been transcribed from a scanned PDF. The original PDF is enclosed in the directory source/.
Throughout the document there are a number of comments from an unknown proofreader that have been incorperated as much as possible, otherwise the document tries to be as faithful as possible to the original.
If you use an electronic version of this document there is hyperlinks in the ”Table of Contents”, the ”Index” and some internal references.
The font ”Bookman Old Style” is used throughout the document.