Page 54, “versá” changed to “versâ” (red, and vice versâ)

Page 60, “widows” changed to “windows” (glasses in druggists’ windows)

Page 82, word “a” removed from text. Original read (small a piece of lead)

Page 82, “cut” changed to “out” (throwing out luminous)

Page 83, word “be” removed from text. Original read (antimony will be become)

Page 83, “Duch” changed to “Dutch” (copper, or “Dutch metal,”)

Page 98, “FRAME” changed to “FLAME” (COMBUSTION WITHOUT FLAME)

Page 100, “fell” changed to “feel” (will feel warmth)

Page 100, “fully” changed to “full” (cup nearly full of water)

Page 111, word “a” added to text (jar with a bladder)