The following minor typographical flaws have been corrected:
- Fig. 7: _missing period at the end of the caption_
- "feeler,"' _unnecessary additional closing quote_
- *Index:* Drops of liquid, shapes of, 10, 29, 30, 31 _missing commas_
- *Index:* Mono-brom-benzene _added hyphen to conform with reference
in text_
Footnotes have been renumbered progressively throughout the book.