Obvious punctuation errors have been corrected.
Spelling inconsistencies have been retained.
On page 83, the clause "It has an independent extinguisher for the
smaller wick tube" had "ndependent" in the original.
On page 91, the ad reading "The Turbine Wheel made by Risdon & Co., Mt.
Holly, N. J., gave the best results at Centennial tests." had "tets" in
the original.
On page 92, the patent named "Gas, scintillator for lighting" was
numbered "204,28" in the original. The final "5" has been added because
sorting the list reveals that the patent numbers form a consecutive
series from 204,122 to 204,413, with the only one missing being 204,285.
On page 92, the patent named "Shoetip" was guessed at; the "t" is
unclear in the original.
On page 94, the phrase "Alcohol Oxidized in the System." had no
terminating punctuation in the original.
On page 94, the illustration containing the words "Diamonds and
Carbor", the "Carbor" may be an abbreviation for "Carborundum"; the
image is unclear in the original.
On page 94, in the advertisement for "WATSONS [sic] NON [sic] CHANGEABLE
GAP LATHE", the abbreviation "MANR." had the "R" as a superscript in the
original.