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.This image may not be used to state or imply the endorsement by the Chemical Heritage Foundation of any product, service or activity, or to concur with an opinion or confirm the accuracy of any text appearing alongside or in logical association with the image.Watt experimenting as a child. At right, a young James Watt (1736-1819) with his parents (James Watt and Agnes Muirhead) plays with a spoon upon the spout of a kettle. Born in the port of Greenock on the Firth of Clyde, Scotland, Watt was initially educated at home by his mother. He went on to become an engineer and inventor. By 1790, the Watt steam engine (developed in the 1760s in Glasgow) had replaced the Newcomen engine. This 1868 engraving by Herbert Bourne (1820-1907) is based on an 1863 oil painting by British artist Marcus Stone (1840-1921), titled 'James Watt Discovering the Condensation of Steam'. (KEYSTONE/SCIENCE PHOTO LIBRARY/CHEMICAL HERITAGE FOUNDATION/SCIENCE PHOTO LIBRARY)