Symmes's Theory of Concentric Spheres / Demonstrating that the Earth is hollow, habitable within, and widely open about the poles

by James McBride; John Cleves Symmes

I am Sir,

One of the believers in that Theory,—

THE AUTHOR.

1824.

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CONTENTS.

[CHAPTER I.]

Containing an introductory glance at some of the different Theories and Opinions which have been embraced respecting the formation of the Earth, and the reception which those Theories met with from the world when first promulgated.

[CHAPTER II.]

Symmes's Theory; comprehending his description of the form of the earth, and of the other orbs in the Universe; his principles of gravity, and the points wherein he differs from the old or generally received theories.