Symzonia - The Museum of Hoaxes

The Symmes Theory of Concentric Spheres

John Cleves Symmes [Jr.] (1779 ... - New-York Historical Society ---1820"; at lower left in graphite: "Note by J.C. Symmes the son / the proper His "Theory on Concentric Spheres" was published in Cincinnati in 1826.

Tales of a Hollow Earth Tracing the Legacy of John Cleves ...

Porous Earth, Hidden Ocean - GovernmentSecrets.com

Tales of a Hollow Earth Tracing the Legacy of John Cleves ... Symmes Theory of Concentric Spheres, Demonstrating That the Earth is. Hollow, Habitable Within, and Widely Open About the Poles, in 1878 and. Flat-earthers go to war with their sworn enemies: hollow ...

John Cleves Symmes was a Philosopher, and the originator of Symmes Theory of Concentric Spheres and Polar voids; He contended that the Earth is a hollow  Peter W. Sinnema, “10 April 1818: John Cleves Symmes's 'No ...

John Quincy Adams and the Hollow Earth Theory