Articles Professor Roscoe's Lectures on Spectrum-Analysis Br Med J 1868; 1 doi: https://doi.org/10.1136/bmj.1.389.594 (Published 13 June 1868) Cite this as: Br Med J 1868;1:594 Article Related content Metrics Responses Peer review Related articles Correction Diphtheria Immunization: A Correction Published: 30 March 1935; Br Med J 1 doi:10.1136/bmj.1.3873.674-a Correction Correction Published: 06 May 1944; Br Med J 1 doi:10.1136/bmj.1.4348.627