Notably suggested by Edmond Halley in the late 17th century, the notion was disproved, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774. It was still occasionally defended through the mid-19th century, notably by John Cleves Symmes Jr.
Notably suggested by Edmond Halley in the late 17th century, the notion was disproved, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774. It was still occasionally defended through the mid-19th century, notably by John Cleves Symmes Jr.
He envisaged the atmosphere inside as luminous (and possibly inhabited) and speculated that escaping gas caused the Aurora Borealis. Le Clerc Milfort in 1781 led a journey with hundreds of Creek Indians to a series of caverns near the Red River above the junction of the Mississippi River.
Milfort also claimed the caverns they saw "could easily contain 15,000 – 20,000 families." === 19th century === In 1818, John Cleves Symmes, Jr.
McBride wrote Symmes' Theory of Concentric Spheres in 1826.
It appears that Reynolds has an article that appeared as a separate booklet in 1827: Remarks of Symmes' Theory Which Appeared in the American Quarterly Review.
Exploring Expedition of 1838–1842, even though that venture was a result of his agitation. Though Symmes himself never wrote a book about his ideas, several authors published works discussing his ideas.
In 1868, a professor W.F.
According to Marshall Gardner, both the Eskimo and Mongolian peoples had come from the interior of the Earth through an entrance at the North pole. === 20th century === NEQUA or The Problem of the Ages, first serialized in a newspaper printed in Topeka, Kansas in 1900 and considered an early feminist utopian novel, mentions John Cleves Symmes' theory to explain its setting in a hollow Earth. An early 20th-century proponent of hollow Earth, William Reed, wrote Phantom of the Poles in 1906.
According to Marshall Gardner, both the Eskimo and Mongolian peoples had come from the interior of the Earth through an entrance at the North pole. === 20th century === NEQUA or The Problem of the Ages, first serialized in a newspaper printed in Topeka, Kansas in 1900 and considered an early feminist utopian novel, mentions John Cleves Symmes' theory to explain its setting in a hollow Earth. An early 20th-century proponent of hollow Earth, William Reed, wrote Phantom of the Poles in 1906.
She said an entrance to the subterranean kingdom will be discovered in the 21st century. Marshall Gardner wrote A Journey to the Earth's Interior in 1913 and published an expanded edition in 1920.
She said an entrance to the subterranean kingdom will be discovered in the 21st century. Marshall Gardner wrote A Journey to the Earth's Interior in 1913 and published an expanded edition in 1920.
The interior was connected with the surface by an opening in the Arctic. The explorer Ferdynand Ossendowski wrote a book in 1922 titled Beasts, Men and Gods.
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