Footnotes were renumbered sequentially and were moved to the end of the book, preceding the Index. Dialect, obsolete and alternative spellings were left unchanged. Inconsistent hyphenation was not changed. Misspelled words were not changed.
Obvious printing errors, such as partially printed letters, were corrected. Final stops missing at the end of sentences and abbreviations were added. Duplicate words and syllables at line endings or page breaks were removed. Two unnecessary commas in the Index were deleted.
Fig. 53 was moved to appear in numerical sequence.
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