Sir James Hopwood Jeans Papers Some correspondence, papers, notebooks and publications of Sir James Hopwood Jeans O.M. (1877-1946), mathematician, physicist and astronomer, Secretary of the Royal Society 1919-1929, and Vice President 1938-1940. Early manuscripts in the series relate to Jeans' education at Trinity College, Cambridge, in the form of early lecture notebooks, largely on mathematical topics. A collection of letters, 1901-1907, documents Jeans' treatment for tuberculosis at Ringwood Sanatorium, Hampshire, and Mundesley Sanotorium, Norfolk, where he completed work on the theory of gases; correspondents included, among others, G H Hardy FRS (1877-1947) and Adam Sedgewick FRS (1854-1913). Jeans' engagements in popularizing science are represented by proofs and typescript of lectures and essays, especially those written for the BBC, 1934-1935, and the Royal Institution, 1933-1944, together with associated letters and press cuttings, including correspondence regarding spiritualism with Sir Arthur Conan Doyle (1857-1930). The series contains collections of offprints, reprints, and extracts of published works by Jeans notably from the 'Philosophical Transactions of the Royal Society' and 'Nature'. The mask of Jeans' face taken after death, was suggested to his widow by the conservationist and author Joy Adamson, who was present when Jeans died. 1896-1945