Articles Reports of Societies Br Med J 1863; 1 doi: https://doi.org/10.1136/bmj.1.125.546 (Published 23 May 1863) Cite this as: Br Med J 1863;1:546 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 29 April 1944; Br Med J 1 doi:10.1136/bmj.1.4347.610 Correction Correction Published: 05 March 1966; Br Med J 1 doi:10.1136/bmj.1.5487.592-a