Part 24

1. Obvious printers’, punctuation and spelling errors have been corrected silently.

2. Some hyphenated and non-hyphenated versions of the same words have been retained as in the original.

3. Superscripts are represented using the caret character, e.g. D^r. or X^{xx}.

4. Italics are shown as xxx.

5. Bold print is shown as =xxx=.