Pg. 76: (footnote) "Herne's" changed to "Hearne's" (Hearne's Journal). Pg. 83: (footnote) "Ross's" changed to "Ross'" (Ross' Voyage). Pg. 99: "Praire" changed to "Prairie" (in the neighbourhood of the Little Prairie). Pg. 107: "maintainance" changed to "maintenance" (the maintenance and support of organic life). Pg. 109: "plumet" changed to "plummet" (between the plummet and the centre of gravity). Pg. 123: "Geogrophy" changed to "Geography" (to teach mankind Geology, Geography, or Astronomy). Pg. 134: "cotemporaries" changed to "contemporaries" (above his contemporaries). Pg. 151: "apparant" changed to "apparent" (beyond the apparent verge). Pg. 159: "catridges" changed to "cartridges" (discharged seventy rounds of cartridges). Pg. 161: "Gallileo" changed to "Galileo" (patience and perseverance of a Galileo). "cotemporary" changed to "contemporary" (contemporary writer has remarked). Pg. 166: "buffetted" changed to "buffeted" (has been buffeted by the ridicule). End of Project Gutenberg's Symmes's Theory of Concentric Spheres, by Anonymous