_My ninth and last geological argument for the divine benevolence is founded upon the permanence and security of the world, in spite of the mighty changes it has undergone, and the powerful agencies to which it is now subject._
When we learn from the records of geology, as they are inscribed upon the rocks, how numerous and thorough have been the revolutions of the surface and the crust of the globe in past ages; how often and how long the present dry land has been alternately above and beneath the ocean; how frequently the crust of the globe has been fractured, bent, and dislocated,--now lifted upward, and now thrown downward, and now folded by lateral pressure; how frequently melted matter has been forced through its strata and through its fissures to the surface; in short, how every particle of the accessible portions of the globe has undergone entire metamorphoses; and especially when we recollect what strong evidence there is that oceans of liquid matter exist beneath the solid crust, and that probably the whole interior of the earth is in that condition, with expansive energy sufficient to rend the globe into fragments,--when we review all these facts, we cannot but feel that the condition of the surface of the globe must be one of great insecurity and liability to change. But it is not so. On the contrary, the present state of the globe is one of permanent uniformity and entire security, except those comparatively slight catastrophes which result from earthquakes, volcanoes, and local deluges. Even the climate has experienced no general change within historic times, and the profound mathematical researches of Baron Fourier have demonstrated that, even though the internal parts of the globe are in an incandescent state, beneath a crust thirty or forty miles, the temperature at the surface has long since ceased to be affected by the melted central mass; that it is not now more than one seventeenth of a degree higher than it would be if the interior were ice; and that hundreds of thousands of years will not see it lowered, from this cause, more than the seventeenth part of a degree. And as to the apprehension that the entire crust of the globe may be broken through, and fall into the melted matter beneath, just reflect what solidity and strength there must be in a mass of hard rock from fifty to one hundred miles in thickness, and your fears of such a catastrophe will probably vanish.