Irrigation and agricultural drainage 75. Papers on irrigation and agricultural drainage, including Chadwick's Supplement on irrigation to the Sanitary Report of 1842; Chadwick's evidence before the Select Committee on Metropolitan Sewage Manure, June 1846; notes of experiments on sewer water irrigation by Henry Thomson of Primrose; papers on the Liquid Manure Irrigation Company, Hume Hall Bridge, Manchester c.1840 -54 <br /> 76. Newspaper cuttings etc. on irrigation and 1854-89 agricultural drainage 1840-1890