P. 30: "direcrection" changed to "direction" (east and west direction).
P. 66: "Ivitchuck" changed to "Ivitchuk".
P. 68: "lide" changed to "line" (line of declination).
P. 113: added "to" (next to my skin).
P. 136: "threugh" changed to "through" (the late journey safety through).
P. 163: "dissappeared" changed to "disappeared" (in many places, entirely disappeared).
P. 201: "fluffly" changed to "fluffy" (much shorter and less fluffy).
P. 202: "Seiurius" changed to "Seiurus".
P. 209: "p." inserted before "200" in item 56.
Pp. 218-223: The table entitled "Dip of the needle and force of magnetic attraction..." was reformatted and abbreviations were used to fit within a reasonable width.