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V.—On Changes of Climate during the Glacial Epoch
Published online by Cambridge University Press: 01 May 2009
Extract
It has already been sufficiently insisted that no warm or genial climate has intervened since the close of the Glacial epoch. The climate of Britain is milder now than at any other period subsequent to the re-elevation of our country after the last great submergence; our winters have been gradually growing less intense; Britain has slowly passed from an Arctic to a temperate condition of things. Mr. Dawkins accounts for the absence of the mammal-bearing drifts in Scotland and the upland districts of England by supposing that in post-glacial times all these regions were covered with snow and ice. This, however, is a rather exaggerated picture of post-glacial Britain. It is quite true that after the emergence of our country from the last great subsidence, a few local glaciers continued to linger on among our mountain valleys.
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References
page 216 note 1 This conclusion receives strong support from the views advocated by Adhemar, Croll, and others, concerning the effect likely to he produced upon the level of the ocean in our hemisphere by the presence of a great ice-cap at the antipodes. During a cold period in the southern hemisphere there would be a tendency to an increase of land-surface here—an increase, however, which we have at present no certain means of estimating.
page 217 note 1 See The Geologist, 1861, p. 243; and Mr. Prestwich's paper in Quart. Journ. Geol. Soc., vol. xvii., p. 364.
page 218 note 1 See Geol. Mag. for March.
page 218 note 2 See Trans. Glas. Geol. Soc, vol. iii., p. 54.
page 218 note 3 Physical Geog. and Geol. of Great Britain, p. 142.
page 219 note 1 Phil. Trans. 1860.
page 221 note 1 In a former paper (Geol. Mag., Vol IX., p. 64) I referred to the “Hardpan” of North America as being in all probability the equivalent of our Till. Since then I have been assured by a friend well acquainted with the superficial deposits of Scotland and North America, that my inference is quite correct, and that the hardpan answers in every respect to till.