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Sully (THOMAS an American artist born)

THOMAS, an American artist; born in Horncastle, Lincolnshire, England, in 1783; emigrated to the United States with his parents in 1792; studied painting in Charleston; established himself in Richmond, Va., as a portrait painter in 1803; removed afterward to New York; and in 1809 settled in Philadelphia, where he afterward lived. His reputation as one of the leading American portrait painters is founded on numerous works, the best known of SULPHUR riol, used in making ink, and very extensively in dyeing and calico printing; it is also much used in medicine; sulphate of calcium, or gypsum; sulphate of magnesium, or Epsom salts; sulphate of manganese, used in calico printing; sulphate of mercury, used in the preparation of corrosive sublimate and of calomel; bi-sulphate of potash, much used as a flux in mineral analysis; sulphate of sodium, or Glauber's salts; sulphate of quinine, much used in medicine; sulphate of zinc, or white vitriol, used in surgery, also in the preparation of drying oils for varnishes, and in the reserve or resist pastes of the calico printer. Many double sulphates are known.