TRANSCRIBER'S NOTE
Obvious typographical errors and punctuation errors have been corrected after careful comparison with other occurrences within the text and consultation of external sources.
Two unpaired double quotation marks could not be corrected.
Several illustrations (Figs. 17A, 25, 27, 36, 52, 59, 60 and 62) were printed sideways in the original book. These have been oriented normally in the etext.
Except for those changes noted below, all misspellings in the text, and inconsistent or archaic usage, have been retained. For example, Brazil wood, Brazil-wood; paper mills, paper-mills; india-rubber, indiarubber; inodorous; pectous; decoction; silicious; inclosed.
[Pg 80], 'Process for reating' replaced by 'Process for Treating'.
[Pg 208], 'the chimey-shaft' replaced by 'the chimney-shaft'.
[Pg 208], 'cylinders urrounding' replaced by 'cylinder surrounding'.
[Pg 229], 'may done rapidly' replaced by 'may be done rapidly'.
[Footnote 34], 'intsrument maker' replaced by 'instrument maker'.
Publisher's Book Catalogs:
Obvious typographical errors and punctuation errors have been corrected. Other minor errors and misspellings have been left unchanged.
Sometimes only the first line of a book title was italicized in the original text; the full title has been italicized in this etext.
The footer on each page of the second Catalog has been removed, except for the final page which has both the even- and odd-page footer.