Page 5, "passings" changed to "passing" (...nails from passing ships and how wooden pegs were substituted for nails in vessels...)

Page 27, "Conville" changed to "Gonville" (Gonville and Caius, Cambridge)

Page 36, added word "of" (...contribute effectively to the advancement of learning.)

Page 98, changed "Philosphical" to "Philosophical" (Philosophical Transactions)

Page 145, changed "formal" to "former" (...the muscle will recover the former motion...)

Page 169, changed "inadventently" to "inadvertently" (...miss meals, and inadvertently to put off...)

Page 206, changed "cicumstances" to "circumstances" (...that, under ordinary circumstances, all...)

Page 246, changed two cases of "pyschology" to "psychology" (...widely known as students of psychology, of whom...); (...great a passion for psychology, and...)

Page 266, changed "Allegmeine" to "Allgemeine" (...German biographer in the Allgemeine Deutsche...)

Page 296, changed "know" to "known" (...who had known him intimately:...)

Page 319, changed "galvonometer" to "galvanometer" (...machine deflected the needle of his galvanometer in the...)

Page 340, changed "Abderdeen" to "Aberdeen" (...physical sciences, at Marischal College, Aberdeen.)

Page 367, changed "realtive" to "relative" (...thoughts that occurred relative to problems...)

Page 368, changed "suface" to "surface" (...as we go below the earth's surface, he...)

Page 400, changed numerical order of index entry "Henry; Joseph"

Page 400, changed "Keppler" to "Kepler"

Page 401, added missing page reference "65" to "Mahomet; sarcophagus"

Page 402, changed "Poggendorf" to "Poggendorff"

Page 404, changed alphabetical order of "Winkelmann"

Updated Illustrations index to include Figures 22-27.