Underground Rivers - University of New Mexico

Chapter 14 -- Hollow Earth Geophysics
Such Newtonian quibbling would not have phased Symmes,
however, as according to J. McBride's Symmes's Theory of
Concentric Spheres; Demonstrating that the Earth Is Hollow,
Habitable Within, and Widely Open about the Poles (1826),
gravity is not an attractive force related to mass, but rather a
pushing force (a pressure in modern terminology) exerted by
a universal ether.
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Case 6: The pressure of ehter
The hollow earth can be dismissed by any number of physical arguments, but our observation is
suffice. Everywhere on the earth objects fall straight downward with the same acceleration. We
can't say that we've proven the gravitational earth theory to be correct, but we can say that we've
proven Teed's hollow earth theory to be incorrect.
Symmes and Teed were not alone, however, in their application of alternative physics to
problems of fluid flow. Although the paper was written to establish why springs emit from outsideworld
-- as opposed to inside-world -- mountaintops -- the higer, the better, actually -- we see like
confusion in "Why Do Springs and Wells Overflow?" Popular Science, November 1879, by
Nelson W. Green.
Here's the essence of the proof with items colored to
assist quick identification.
Let aaa, be a great circle of the earth attained by
passing a plane through the earth's center C,
perpendicular to its axis, and bbb, the circle cut by
the same plane through the inner surface of the
earth's supposed crust. In order to obtain room for
the illustration, this section is exaggerated.
Let the line AB represent the force of gravity, and
AE the centrifugal force at the point A, which will
operate in the direction of the tangent AG. These
two forces, for the purposes of this discussion,
may be assumed to be equal, as the question of
their relative intensities does not enter into the
problem.
Erect upon the lone AB the square ABCD and draw the diagonal AD produced to F. By a wellknown
law we shall have AD representing the resultant of the forces of AB and AE -- that is,
the line AD will represent the direction of AF, and the intensity of the resultant of the force of
gravity and centrifugal force acting at the point A.
It will be observed that since the diagonal of either square or of a parallelogram is longer than
either of its sides, the resultant AD will have a greater intensity than gravity represented by AB.
Now suppose the point A' to be some point inside the earth's crust, and some distance form the
surface, and suppose that it is a particle of water in a body of water imprisoned by surrounding
rocks. This particle will be acted upon by a continual impulse to move in the direction of A'F'',
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