The Symmes Theory of Concentric Spheres: Demonstrating that the Earth is Hollow, Habitable Within, and Widely Open about the Poles |
Common terms and phrases
according accounted animals apparent verge appear arctic regions atmosphere Aurora Borealis auroral light axis Barrington and Beaufoy belts Buddington cape Captain Hall Captain Ross Captain Symmes cause cavities channel clouds coast cold colder concave concentric spheres currents distance dogs Dovekies earth equator Europe exist facts ferry ourselves fish Fort Adams further geese glacier Greenland Hans shot Hearn Hearne's Journal high latitude high northern latitudes highest hollow Hudson's Bay hummocks ice-foot icebergs icy circle interior John Cleves Symmes Lake land land-ice light longitude magnetic Marshall Bay meridian migrate milder climate miles MISSOURI TERRITORY navigators nearly needle north latitude northward numbers observed ocean open polar sea open water Pacific Ocean passed phenomena planet polar opening refraction reindeer right angles river Ross's Voyage seen shoals sledge snow solid globe southern verge space Spitzbergen spring season surface Symmes theory traveled variation vessel warmer winter