Articles Transactions of Branches Br Med J 1864; 2 doi: https://doi.org/10.1136/bmj.2.187.109 (Published 30 July 1864) Cite this as: Br Med J 1864;2:109 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 27 August 1966; Br Med J 2 doi:10.1136/bmj.2.5512.118