Symmes's Theory of Concentric Spheres Quotes

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Symmes's Theory of Concentric Spheres: Demonstrating That the Earth Is Hollow, Habitable Within, and Widely Open About the Poles (1826) Symmes's Theory of Concentric Spheres: Demonstrating That the Earth Is Hollow, Habitable Within, and Widely Open About the Poles by John Cleves Symmes
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