Page 34, ‘Hook’ changed to ‘Hooke,’ “...invented by Dr. Hooke.”
Page 37, ‘Aneriod’ changed to ‘Aneroid,’ “...by means of Barometer or Aneroid,...”
Page 39, space changed to stop, “...between nine and ten p.m.”
Page 42, space inserted between ‘no’ and ‘less,’ “...at no less than 212 miles.”
Page 46, illustration number added to caption, “38. Damp Detector.”
Page 51, comma moved to after ‘weather,’ “In cold calm weather,...”
Page 57, ‘!’ changed to ‘,’ “cloud reflector,”
Page 58, ‘2.’ changed to ‘2nd.,’ “...and 2nd. Velocity of Motion.,”
Page 74, degrees changed to minutes, “57° 29´ N.”
Page 79, ‘Guage’ changed to ‘Gauge,’ “Lind’s Anemometer or Wind Gauge...”