Lectures and Broadcasts presents invitation and public lectures, 1896-1955, and university teaching, 1909-1937, including undated material. Tansley talked on a wide range of botanical and ecological topics to diverse audiences including pioneering adult education institutions in London such as the Working Men's College and Morley College, scientific societies such as the Cambridge University Natural Sciences Club and the Newnham Science Club, Cambridge. The great bulk of the university teaching material relates to courses given while Tansley was Professor of Botany at Oxford University, 1927-1937, including forestry and ecology lectures. The broadcast material comprises 12 duplicated typescript 'as broadcast' scripts and a series of BBC radio talks on 'Man's Place in Nature,' broadcast October-December 1942. The talks were given by A.M. Carr-Saunders, C. Daryll Forde, A.V. Hill, Sir James Jeans and D.M.S. Watson. Tansley does not appear to have given a talk and his contribution to the series, if any, is not clear.