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James Hutton
James Hutton (; 3 June 1726 OS (14 June 1726 NS) – 26 March 1797) was a Scottish geologist, physician, chemical manufacturer, naturalist, and experimental agriculturalist. He originated the theory of uniformitarianism—a fundamental principle of geology—which explains the features of the Earth's crust by means of natural processes over geologic time. Hutton's work established geology as a proper science, and thus he is often referred to as the "Father of Modern Geology".〔(【引用サイトリンク】title=Millennial Plaques: James Hutton )〕
Through observation and carefully reasoned geological arguments, Hutton came to believe that the Earth was perpetually being formed; he recognised that the history of the Earth could be determined by understanding how processes such as erosion and sedimentation work in the present day. His theories of geology and geologic time, also called deep time, came to be included in theories which were called plutonism and uniformitarianism. Some of his writings anticipated the Gaia hypothesis.
==Early life and career==
Hutton was born in Edinburgh on 3 June 1726 OS as one of five children of William Hutton, a merchant who was Edinburgh City Treasurer, but who died in 1729 when James was still young. Hutton's mother – Sarah Balfour – insisted on his education at the High School of Edinburgh where he was particularly interested in mathematics and chemistry, then when he was 14 he attended the University of Edinburgh as a "student of humanity" i.e. Classics (Latin and Greek). He was apprenticed to the lawyer George Chalmers WS when he was 17, but took more interest in chemical experiments than legal work. At the age of 18, he became a physician's assistant, and attended lectures in medicine at the University of Edinburgh. After three years he went to the University of Paris to continue his studies, taking the degree of Doctor of Medicine at Leiden University in 1749 with a thesis on blood circulation.〔(【引用サイトリンク】title=Early Years )〕 Around 1747 he had a son by a Miss Edington, and though he gave his child James Smeaton Hutton financial assistance, he had little to do with the boy who went on to become a post-office clerk in London.〔(【引用サイトリンク】title=Settled and Unsettled )〕
After his degree Hutton returned to London, then in mid-1750 went back to Edinburgh and resumed chemical experiments with close friend, James Davie. Their work on production of sal ammoniac from soot led to their partnership in a profitable chemical works,〔(【引用サイトリンク】title=Thoughts of Settling in the World )〕 manufacturing the crystalline salt which was used for dyeing, metalworking and as smelling salts and previously was available only from natural sources and had to be imported from Egypt. Hutton owned and rented out properties in Edinburgh, employing a factor to manage this business.〔(【引用サイトリンク】title=Business and Related Interests )〕
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