Changed "or" to "of" in the table in footnote 17 on page 512: "564.8 lbs. of (A)."
Changed "near-by" to "nearby" on page 526: "in a nearby timber."
Changed "fore-hearth" to "forehearth" on page 540: "into the forehearth," and on page 543: "into the forehearth."
Changed "sideboards" to "side-boards" on page 552: "the side-boards are fixed."
Changed superscripts to subscripts in footnote 9 on page 561: "Ca(NO3)2+ K2CO3= CaCO3+ 2KNO3."
Changed "crystallised" to "crystallized" in footnote 9 on page 561.
Changed "hydros" to "hydrous" in the footnote on page 565: "the hydrous sulphate."
Changed "octrahedra" to "octahedra" in the footnote on page 565.
Changed "subtance" to "substance" in footnote 11 on page 572: "that feathery substance."
Changed "ventholes" to "vent-holes" on page 580: "two or three vent-holes."
Changed "prehistoric" to "pre-historic" on page 582: "from pre-historic times."
Changed "Rawlinsons, Trans." to "Rawlinson's Trans." in the footnote on page 583.
Changed "Neavius" to "Naevius" on page 596: "Johannes Naevius."
Changed "Unständliche" to "Umständliche" in footnote 3 on page 599: "Umständliche ... Chronica."
Changed "Watts" to "Watt" on page 605: "Watt mentions it."
Changed "begininng" to "beginning" on page 611: "beginning of the sixteenth centuries."
Changed "oxidising" to "oxidizing" on page 615: "an oxidizing blast."
Changed "Oryguia" to "Orguia" on page 617.
Changed the reference for Annaberg on page 619 from "XXI" to "XXXI."
Changed "Ceragurite" to "Cerargurite" in its index entry on page 620.
Changed "Fibræ" to "Fibrae" (ae-ligature) in its index entry on page 622.
Changed the reference for Glass on page 623 from "534-592" to "584-592."
Changed two references for Magnes on page 625 from "584" to "585."
Changed the reference for Nuremberg, Scale of Weights on page 626 from "264" to "263."
Changed "Pickscheifer" to "Pickschiefer" in its index entry on page 626.
Changed the reference for Proustite on page 626, and the references for Pyrargyrite, for Ruby Silver, for Silver, for Silver Glance and for Silver Ores on page 627, from "109" to "108."
Changed the reference for Quicksilver on page 626 from "111" to "110."
Changed "Stuices" to "Sluices" on page 626, in the index entry for "Pockets in Alluvial Sluices."
Changed the references for Schneeberg, St. George mine and for St. George Mine on page 627 from "92" to "91."
Changed "Steinmack" to "Steinmarck" in its index entry on page 628.
In the Index to Persons and Authorities (starting page 630), there are a number of references to page 599 that appear to make more sense as references to 603, but which were not changed.
Changed the reference for Venice, Scale of Weights on page 630 from "264" to "263."
Changed the reference for De Mensuris et Ponderibus, Weights and Measures on page 632 from "264" to "263."
Changed the reference for De Natura eorum quae Effluunt ex Terra, Dedication on page 632 from "VIII" to "VII."
Changed the reference for De Precio Metallorum et Monetis on page 632 from "264" to "263."
Changed "Diphilus" to "Diphilos" in its index entry on page 632.
Changed the references for Forehearth and for Furnaces, Blast on page 637 from "390" to "389."
Changed the references for Pumps, Suction on page 638 from "188; 137" to "183; 187."
Changed the reference for "Tests" for Refining Silver on page 638 from "384" to "484."