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HOPKINS, WILLIAM (1793–1866)

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Originally appearing in Volume V13, Page 685 of the 1911 Encyclopedia Britannica.
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HOPKINS, See also:WILLIAM (1793–1866) , See also:English mathematician and geologist, was See also:born at See also:Kingston-on-Soar, in See also:Nottingham-See also:shire, on the 2nd of See also:February 1793. In his youth he learned See also:practical See also:agriculture in See also:Norfolk and afterwards took an extensive See also:farm in See also:Suffolk. In this he was unsuccessful. At the See also:age of See also:thirty he entered St See also:Peter's See also:College, See also:Cambridge, taking his degree of B.A. in 1827 as seventh wrangler and M.A. in 183o. In 1833 he published Elements of See also:Trigonometry. He was distinguished for his mathematical knowledge, and became eminently successful as a private See also:tutor, many of his pupils attaining high distinction. About 1833, through See also:meeting Sedgw•ick at See also:Barmouth and joining him in several excursions, he became intensely interested in See also:geology. Thereafter, in papers published by the Cambridge Philosophical Society and the See also:Geological Society of See also:London, he entered largely into mathematical inquiries connected with geology, dealing with the effects which an elevatory force acting from below would produce on a portion of the See also:earth's crust, in fissures, faults, &c. In this way he discussed the See also:elevation and denudation of the See also:Lake See also:district, the See also:Wealden See also:area, and the Bas Boulonnais. He wrote also on the See also:motion of glaciers and the transport of erratic blocks. So ably had he grappled with many difficult problems that in 185o the See also:Wollaston See also:medal was awarded to him by the Geological Society of London; and in the following See also:year he was elected See also:president. In his second address (1853) he criticized See also:Elie de See also:Beaumont's theory of the elevation of See also:mountain-chains and showed the imperfect See also:evidence on which it rested.

He brought before the Geological Society in 1851 an important See also:

paper On the Causes which may have produced changes in the Earth's superficial Temperature. He was president of the See also:British Association for 1853. His later researches included observations on the conductivity of various substances for See also:heat, and on the effect of pressure on the temperature of See also:fusion of different bodies. He died at Cambridge on the 13th of See also:October 1866. Obituary by W. W. See also:Smyth, in Quart. Journ. Geol. See also:Soc. (1867), p. See also:xxix.

End of Article: HOPKINS, WILLIAM (1793–1866)

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