James Hutton ( ; 3 June O.S. 1726 – 26 March 1797) was a Scottish geologist, agriculturalist, chemical manufacturer, naturalist and physician. Often referred to as the "Father of Modern Geology," he played a key role in establishing geology as a modern science. Hutton advanced the idea that the physical world's remote history can be inferred from evidence in present-day rocks. Through his study of features in the landscape and coastlines of his native Scottish Lowlands, such as Salisbury Crags and Siccar Point, he developed the theory that geological features could not be static but underwent continuing transformation over indefinitely long periods of time. From this he argued, in agreement with many other early geologists, that the Earth could not be young. He was one of the earliest proponents of what in the 1830s became known as uniformitarianism, the science which explains features of the Earth's crust as the outcome of continuing natural processes over the long geologic time scale. Hutton also put forward a thesis for a 'system of the habitable Earth' proposed as a deistic mechanism designed to keep the world eternally suitable for humans, an early attempt to formulate what today might be called one kind of anthropic principle. Some reflections similar to those of Hutton can be found in publications of his contemporaries, such as the French naturalist Georges-Louis Leclerc de Buffon, but it is chiefly Hutton's pioneering work that established the field.
Early life and career Hutton was born in Edinburgh on 3 June O.S. 1726, as one of five children of Sarah Balfour and William Hutton, a merchant who was Edinburgh City Treasurer. Hutton's father died in 1729, when he was three. He was educated 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", studying the classics. 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 a two-year stay in Paris, James Hutton arrived in Leiden in 1749, where he enrolled at the University of Leiden on 14 August 1749, at the home of the then rector magnificus Joachim Schwartz to obtain a doctorate in medicine. He stayed with the widow Van der Tas (née Judith Bouvat) at the Langebrug, which corresponds to the current address Langebrug 101 in Leiden. His supervisor was Professor Frederik Winter, who was not only a professor at Leiden University, but also court physician to the Stadholder. The Latin manuscript of Hutton's dissertation also contained 92 theses, two of which were successfully defended in public by James Hutton on 3 September 1749. On 12 September 1749, James Hutton obtained his doctorate in medicine from Leiden University with a physico-medical thesis entitled Sanguine et Circulatione Microcosmi. The thesis was printed by Wilhelmus Boot, book printer in Leiden. It is believed that James Hutton returned to Britain shortly after his promotion. After his degree Hutton went to London, then in mid-1750 returned to Edinburgh and resumed chemical experiments with close friend, John Davie. Their work on production of sal ammoniac from soot led to their partnership in a profitable chemical works, manufacturing the crystalline salt which was used for dyeing, metalworking and as smelling salts and had been 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.
Farming and geology Hutton inherited from his father the Berwickshire farms of Slighhouses, a lowland farm which had been in the family since 1713, and the hill farm of Nether Monynut. In the early 1750s he moved to Slighhouses and set about making improvements, introducing farming practices from other parts of Britain and experimenting with plant and animal husbandry. He recorded his ideas and innovations in an unpublished treatise on The Elements of Agriculture.
This developed his interest in meteorology and geology. In a 1753 letter he wrote that he had "become very fond of studying the surface of the earth, and was looking with anxious curiosity into every pit or ditch or bed of a river that fell in his way". Clearing and draining his farm provided ample opportunities. The mathematician John Playfair described Hutton as having noticed that "a vast proportion of the present rocks are composed of materials afforded by the destruction of bodies, animal, vegetable and mineral, of more ancient formation". His theoretical ideas began to come together in 1760. While his farming activities continued, in 1764 he went on a geological tour of the north of Scotland with George Clerk-Maxwell, ancestor of the famous James Clerk Maxwell.
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