Changed "Agatharcides" to "Agatharchides" in the footnote on page 399, and again in the footnote on page 465.
Changed "bare" to "bars" on page 418: "the lattice-like bars sells."
Changed "Nütliche" to "Nützliche" in footnote 59 on page 433: "the Nützliche Bergbüchlein in association."
Changed "threequarters" to "three-quarters" on page 437: "three-quarters of a foot."
Changed "the spout from the opercula extends" to "the spouts from the opercula extend" in the caption to the illustration on page 446.
Changed "earthern" to "earthen" on page 451: "melted with copper in a red hot earthen crucible."
Changed "Boussingalt" to "Boussingault" in footnote 18 on page 454: "Investigation by Boussingault."
Footnote 26, on page 465, refers to a discussion on page 389; there is no such discussion. Perhaps the note on page [390] was intended, but no change was made.
The reference to p. 480 in the footnote on page 466 doesn't seem to make sense. Perhaps the reference should be to the note on p. [475] or the illustration on p. [481], but it was not changed.
Changed "Agricolas'" to "Agricola's" in footnote 27 on page 467.