Penny Blood: Serial Sensation and Working-Class Entertainment — page 11: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

viii CONTENTS. CHAPTER IV. LATERAL PRESSURE, ITS AMOUNT. Generally received views regarding the contortion of rocks by lateral pressure— Calculation of the possible amount of such pressure at the surface—Attempt to estimate the same within the earth—Mountain chains elevated by lateral pressure—The Himalayas. , . . : . : . . 84 CHAPTER V. ELEVATIONS AND DEPRESSIONS. Distinction between compression and contraction—Definition of datum levels— General geometrical relation between the compression of a portion of the earth’s crust and the elevations and depressions referred to the upper datum level resulting therefrom—The same extended to the whole surface of the glove —Modification of this relation if the globe is supposed to be wholly solid— Average height of all the elevations above the datum level upon the supposi- tion of solidity, expressed in terms of depth of sea and height of land, and of areas of the same—This average height of actual elevations estimated in CHAPTER VI. ELEVATIONS ON THE HYPOTHESIS OF SOLIDITY. Any physical hypothesis regarding the condition of the interior of the earth may be tested by comparing the average height of the elevations it would produce with that which exists in nature—Sir Wm. Thomson regards the earth as a solid cooling by conduction—Some of the results of his paper ‘‘ On the Secular Cooling of the Earth”—His mathematical formula for expressing the law of temperature in descending—Calculation in general symbols of the average height of the elevations which would be produced upon the supposition of the earth cooling as a solid—Numerical result obtained with a value of the coeffi- cient of contraction deduced from Mallet’s experiments and Sir Wm. Thomson's estimates of the melting temperature and conductivity—The same with Mr Mallet’s estimate of the melting temperature of slag—The corresponding age of the earth—Amount of radial contraction . . ° . ‘ . 57 CHAPTER VII. HYPOTHESIS OF SOLIDITY FAILS. Summary of results of Chap. VI.—Grounds on which Physicists have restricted geological time within certain limits—Discrepancy between height of the actual average elevations and of those which would be produced upon a cooling solid globe—Necessary alternative suppositions—Captain Dutton’s commiclsoolkks (CO)