CHALLIS

Rev. James ( 4 son of John Challis of Brain tree, E ex ). b. Brain tree 12 Dec. 1803; ed. at Mill Hill school, London and Trin. Coll. Cam., scholar 1824, senior wrangler and first Smith’s prizeman 1825, B.A. 1825, M.A. 1828; fellow of his college 1826–31; re-elected fellow May 1870; R. of Papworth Everard 1830–52; examiner for the Smith prizes 1836–78; Plumian profe or of astronomy and experimental philosophy in Univ. of Cam. 2 Feb. 1836 to death; director of Cambridge observatory 1836–61; invented the Meteoroscope 1848 and the Transit reducer 1849; F.R.A.S. 8 April 1836, F.R.S. 9 June 1848; author of Notes on the principles of pure and applied calculation and applications of mathematical principles to theories of the physical forces 1869; Lectures on practical astronomy and astronomical instruments 1879. d. 2 Trumping ton st. Cambridge 3 Dec. 1882. Monthly notices of Royal Astronom. Soc. xliii , 160–79 (1883).