Penny Blood: Serial Sensation and Working-Class Entertainment — page 12: what you’re looking at

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

CONTENTS. 1x argument—Ocean basins—Opinions about them of Pratt, Mallet, Hopkins, LeConte—Radial contraction cannot explain them—Still less oscillations of surface—Ezamples of oscillation—N. Wales, Appallachians, New Zealand, India, Colorado Plateau—Gwyn Jeffreys on changes of level—Babbage—The distribution of elevations in ranges requires a fluid substratum—This sup- position explains other surface movements—The pressures under which any part of the crust ts in equilibrium—-The so-called “‘contractional hypothesis” not to be abandoned—Captain Dutton’s objections to it considered . . CHAPTER VIII FLUID SUBSTRATUM. The extravasation of water-substance from beneath the crust suggested as a cause of contraction of volume—Igneo-aqueous fuston—Disaolving power of water when above the critical temperature—Scrope—LeConte—Escape of steam from volcanic vents—Opinion that sea-water gains access to volcanic foci— Objections to this hypothesis—Ezperiment of Daubrée not in point— Views on cosmogony—Dr Sterry Hunt’s theory—Objections to tt—Fails to account for the facis—-A suggestion to explain the presence of water-substance below the cooled crust. . ; . ° : - . . 87 CHAPTER IX. CRUST NOT FLEXIBLE. The “datum level” equation has served an important purpose—Supposition of a flexible crust—Mode of determining the general character of the undulations which a thin flexible crust would assume when resting upon a liquid— Mathematical investigation of the problem—Certain negative conclusions therefrom regarding the earth’s erust—Alternative assumption to which we areled . ; ; . , ; ; ; : , . . 99 CHAPTER X. DISTURBED TRACT. Conditions of equilibrium of a disturbed portion of the earth’s crust—Probable result of compression—Part of the crust sheared upwards and part downwards— These separated by a ‘‘neutral zone” —Calculation of its position—Confused contortions in highly metamorphosed rocks explained—Depth of neutral zone —Probable thickness of crust—Prof. A. Favre's experiments on contortions— Inverted flexrures—Formation of a mountain chain and its elevation above the ocean—Subsequent effects of denudation and accumulation of additional sediment—Consequent tilting of tract—Also general elevation from the same cause—Why areas of deposition are sinking areas—Degree of tilting depends upon- width of tract and the existence of a mountain chain .° . . 114 COMIC OOOKS.EO