Articles Reports and Analyses and Descriptions of New Inventions in Medicine, Surgery, Dietetics, and the Allied Sciences Br Med J 1890; 2 doi: https://doi.org/10.1136/bmj.2.1542.154 (Published 19 July 1890) Cite this as: Br Med J 1890;2:154 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 22 July 1950; Br Med J 2 doi:10.1136/bmj.2.4672.232 Correction Correction Published: 02 August 1952; Br Med J 2 doi:10.1136/bmj.2.4778.298 Correction Correction Published: 26 July 1958; Br Med J 2 doi:10.1136/bmj.2.5090.260