Notebook of J S Haldane containing brief notes and arithmetical calculations apparently in connexion with his investigations into gases and respiration in mines., 1913., MS.20238. Correspondence and papers of and concerning John Scott Haldane, physiologist and philosopher., MSS.20231-20239. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/42895 Accessed September 24, 2024.