Penny Blood: Serial Sensation and Working-Class Entertainment — page 197: what you’re looking at

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

CHAPTER XIV. EXTRAVASATION OF WATER WILL NOT ACCOUNT FOR COMPRESSION. Hypothesis that oceans consist of water that has been extravasated.— Density of the water before extravasation—volume of interior which would need to have contributed it.—Hypothesis shown to be inadequate to produce the entire compression.—Disturbance of crust by change of eliipticity of spheroid.— Inequalities do not appear connected with such @ cause. In a former part of this book’ we have suggested the extravasation of water substance from beneath the crust as a possible cause of contraction, and of the consequent compres- sion, of which we are in quest”; and have proposed to examine its validity’. This we will now proceed to do, availing ourselves of the approximate values for the compression obtaining in the preceding chapter. We have already pointed out how large a portion of water is emitted in volcanic eruptions, and submitted a hypothesis to account for its presence beneath the crust’. It is certain that it immediately falls in rain and goes to increase the volume of the ocean. If then we put the ocean out of the question, and consider the configuration of the solid surface of the earth, we have before us, on the present hypothesis, the surface of a globe, which has been compressed solely by the contraction of the globe, caused by the extravasation of a certain portion of its original internal substance. This then falls under the case, where the coefficient of contraction will be the same as that of compression. 1 p. 88. See also Judd’s ‘‘ Volcanoes,” fig.5. London: Kegan Paul and Co., 1881. 2 See chap. viii. 8 See p. 90. COMICOOOLKS @ (CO) en ee ee re — as _— a —