Transcriber's Note:
Obvious typographical errors have been corrected. Inconsistent spelling and hyphenation in the original document have been preserved.
D'Appligny was changed to D'Apligny.
Gallium was changed to Galium.
Page 132: a "Note" was anchored, and added to the footnote sequence.
Inconsistent punctuation and capitalization of lists, chapter headings, and footnotes was retained.
The listed Errata were corrected.
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