Daniell, JOHN FREDERIC

Daniell, JOHN FREDERIC, scientist, was born in London, March 12, 1790. He was for a time engaged in a sugar-refining work, but was elected a Fellow of the Royal Society in 1814, and devoted himself to chemistry and meteorology. In 1823 he published his Meteorological Essays, and in 1824 the Horticultural Society awarded him their silver medal for an essay on artificial climate. In 1831 he was appointed professor of Chemistry in King's College, London; and in 1839 published his Introduction to Chemical Philosophy. In 1843 he received the degree of D.C.L. from the university of Oxford, and obtained all the three medals in the gift of the Royal Society. He invented a hygrometer (1820), and a new pyrometer (1830), as well as the electric battery known by his name; and he wrote many valuable papers on chemistry, especially on voltaic combinations and electrolysis. He died suddenly, March 13, 1845.