Page 58: ... accessaries, as anvils, ... changed to ... accessories, as anvils, ....
Page 77, Endnote 2: opening quote mark inserted before The inquiry of truth ....
Page 171: Maudslay, Clement Murray, Nasmyth changed to Maudslay, Clement, Murray, Nasmyth.
Page 194: Opening quote mark inserted before Applying our popular schemes ....
Page 257: Endnote marker numbering [E1] corrected to [E11] to conform to endnotes for this chapter.
Page 392, footnote [125]: Of the 51 cities tabulated ... changed to Of the 54 cities tabulated ....
Page 432: Chicago Manual Training School, equipment of: 341 changed to 347.