Articles Therapeutic Memoranda Br Med J 1871; 2 doi: https://doi.org/10.1136/bmj.2.570.635 (Published 02 December 1871) Cite this as: Br Med J 1871;2:635 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 28 September 1957; Br Med J 2 doi:10.1136/bmj.2.5047.776