Penny Blood: Serial Sensation and Working-Class Entertainment — page 235: what you’re looking at

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

218 GEOLOGICAL MOVEMENTS (cH. xvil. self. The rejection of this hypothesis has led to the supposition that the crust is flexible only to a small degree, and that, under compression, the corrugations which are raised upon the surface must be accompanied by corresponding downward protuberances of larger dimensions projecting into the fluid below, thus causing them to be duplex: and it has been pointed out that certain facts, brought to light by experiments made with the plumb- line upon the attraction of mountainous regions, have been better explained by Sir G, B. Airy upon the supposition of such protuberances, than in any other way that has been suggested. We have also shown that certain other facts of an entirely different class, connected with the observed slow rate of increase of temperature beneath mountains, are also better accounted for in this manner, than in the way originally proposed by the observer, who has studied and described the phenomena most carefully. These two circumstances appear to lend a very con- siderable amount of support to this view of the subject, so that the diagrammatic sections of Chapter X., which represent the outcome of it, are thus far corroborated. But in seeking for a cause of compression, which may have produced corrugations of the duplex character and amount required, our first attempt has failed. Here has therefore been a third hypothesis examined and found insufficient. It was (3) That the compression which has caused these corrugations has arisen from a diminution of the earth’s volume through extravasation of water-substance from beneath the crust. The Author himself had some years ago suggested this idea, and it had been not unfavourably received by some leading geo- logists. But when he came to write the chapter in which the hypothesis is discussed, he found it, as he now believes, insufficient alone to produce the compression requisite. All these explanations having failed, and the fact of com- pression still remaining patent, a fresh suggestion has been put forward, which is not intended to be more thah tentative and may possibly share the fate of the rest. But it has this commiclsoolkks (CO) QB ee ot eee ee © ao