DALTON, JOHN

(1766-1844), Eng. chemist and physicist; 6. of a Quaker family in Cumber land; became a teacher in Manchester in 1793, and there continued meteorological observations which he entered until the day before his death. D. communicated a paper to the Manchester Literary and Philosphical Soc. on color-blindne (Daltonism), with which he was afflicted, and from 1801 onwards pub. numerous papers on the properties of gases. His most important work, however, is his enunciation of the atomic theory. He delivered courses of lectures, 1803-10, at the Royal Institution, London, in Glasgow, and in Edinburgh; elected F.R.S., 1822. 3° 12’ W.), market town, Lancashire, England; with extensive iron works; erat Furne Abbey in vicinity. Pop. 11,000.