"Then, do you believe this theory?" I asked, somewhat surprised at the unusual interest taken by Captain Battell.
"Why not?" he responded. "I have always been among the few who treated every new thought with fairness and consideration, no matter what might be my own preconceived opinions. While not accepting every new fangled theory that comes along, I do not condemn, but investigate, with a view to ascertaining the exact truth. I will not knowingly twist and misrepresent facts and logical deductions therefrom, for the purpose of proving a pre-adopted creed. Hence I have given this theory an impartial hearing and justice compels me to admit that the arguments in its favor are well worthy of careful consideration. Scientists have all agreed that the earth is not a cold, solid body, and to account for its lack of density they assume that the center is expanded and diffused by heat. They further assume that it was originally a nebulous body entirely destitute of a solid surface. If this is true, then the centrifugal force generated by its rapid revolution on its axis would certainly throw its constituent elements outward toward the surface, thus tending to produce a hollow shell, the very thing claimed in this 'Theory of Concentric Spheres.' The operation of this mechanical law, which governs revolving matter, can be readily illustrated by placing a quantity of oil in alcohol of the same density. The oil at once assumes the globular form by virtue of the law of molecular attraction. Then insert a disk through the center of the globule and begin to turn it around. The oil at once begins to rotate on its axis and becomes depressed at the poles and bulged at the equator, just the form which the earth is conceived to be. Increase the rapidity of the revolution up to a certain point and the oil separates from the disk and becomes a revolving ring. Reasoning from these well-known mechanical laws, we are forced to the conclusion, that if the earth was ever a soft revolving body it must be hollow at the center, and it is not at all unlikely that there may be openings at the poles into this hollow space. So, we see that there is some logical foundation for this Hollow Globe Theory."
"It is true," I replied, "that the motion of a soft revolving body, such as the earth is supposed to have been, may be so accelerated, that the mass will separate from the line of its axis, but in such a case it would become a revolving ring, and not a hollow shell, as required by this theory of concentric spheres. Have you any theory as to how a revolving ring could under the operation of known mechanical laws, be converted into a hollow shell, with convex and concave surfaces?"
"Yes," responded Battell, "I can very easily formulate such a theory. I can assume that the earth was at one time a revolving ring of meteors, or minute planetary bodies, which by the mutual attraction of its parts became solid. This ring, besides the motion on its own axis, was revolving around the sun, or common center of the solar nebula, through space filled with meteors, and by its attraction it gathered other rings of meteors exterior to itself, thus forming a series of concentric rings revolving around the first, or present ring. The materials composing these external rings could not reach the parent ring at its equator because of the centrifugal force generated by its revolution around its axis, but under the operation of well-known mechanical laws, they might be drawn toward the pole where the attraction was the greatest and the centrifugal force the least. Under the influence of these contending forces, these external rings, thus acted upon, would one by one spread out and form, first a canopy over the central ring, and then it would part at the equator, and be drawn to the poles where it would ultimately find a resting place upon its polar edges. Such a process kept up long enough would convert the original revolving ring, or infant earth, into a hollow shell. Of course all this is mere speculation, but the same thing may be said of the nebular hypothesis, the supposed igneous condition of the earth's center, and in fact of nearly all the teachings of science when it attempts to go beyond the domain of undisputed facts."
"I am much interested in your reasoning," I said. "This is a new thought to me and I would like to follow it a little further. How does this Hollow Globe theory account for volcanoes and other evidences of internal heat, that have led scientists to the conclusion that the center of the earth is an igneous mass?"
"To my mind," said Battell, "these evidences of intense internal heat do not conflict with the Hollow Globe Theory. Assuming that the shell is one thousand miles thick; at the center, between the outer and inner crust, there would be a pressure of five hundred miles of solid matter, more than sufficient to generate a heat that would melt every known rock, and this of itself will account for every evidence of internal heat. Scientists have taught us that heat is a form of motion, or rather that it is the result of motion when arrested. Now pressure is only arrested motion, or in other words heat. Hence it has been estimated that the weight of a column of steel blocks, sixty-five thousand feet in height, would generate sufficient heat to melt the lower tier of blocks. These well-known laws, to my mind, offer a more plausible explanation of the existence of intense heat at great depths, than the assumption that this heat is the residue, that was left over from the heat of an original planetary nebula. Well known laws of physics, force us to the conclusion that this earth can never become a cold body and that the igneous condition at great depths, will continue as long as the centripetal and centrifugal forces continue to press the outer and inner surfaces toward each other. Or in other words, as long as the surface continues to press down upon the materials below, as they do now, there will be intense heat at great depths."
"Your theory," I replied, "if true, will force scientists to abandon the wonderful history of creation which they have evolved from long and persistent research."
"Nothing but their opinions will need to be revised," said Battell. "Every fact they have discovered will continue to be a fact. We are here on this expedition to discover facts of scientific importance, and it now looks as if we are making a most wonderful discovery that will force scientists to abandon some of their long cherished opinions and revise others. If we find that this earth is actually a hollow shell, it will be a fact, that must in the very nature of things harmonize with every other fact that has been, or will be discovered. Facts are facts, and while they may not be understood, they cannot be set aside. It was to discover facts that might benefit the entire human race by increasing their knowledge that I sacrificed a whaling business that was paying a handsome profit, to join Captain Ganoe on this expedition, in which I might lose the accumulations of years, and possibly life itself. I certainly did not join this expedition in order to either confirm, or disprove, any of the theories which scientists have given to the world."