Janus: Papers of Joseph Needham as a historian of Chinese science, technology and medicine

Needham/NRI2/SCC2/206/7 contains:
1	Bundle of documents labelled 'Stapleton [Dr. H E Sapleton of Jersey] - Dubs [Homer H. Dubs of Oxford] correspondence on alchemy, metallurgy and sal ammoniac [nushadur]'
2	Note from Joseph Needham to Gustav [Haloun], forwarding copied of his correspondence with Homer H. Duds and H. E. Stapleton on the history of Chinese alchemy
3	Notes from Harold W. Bailey on texts containing reference to sal ammoniac, and related Joseph Needham notes
4	Copy of a paper by Julius Ruska entitled 'Sal ammoniacus, Nusadir und Salmiak', (Heidelberg, 1923), and Joseph Needham notes from the paper
5	Photocopied pages from H. E. Roscoe and C. Schorlemmer, 'A Treatise on Chemistry', (1894), relating to ammonia
6	Letter from Martin Crose [?] of Cambridge about the experiments of J. B. S. Haldane and his use of ammonium chloride to 'modify his metabolism'
7	Related manuscript draft paragraphs for 'Science and Civilisation in China, Volume 5, Part 4'
8	Notes and other references relating to to sal ammoniac [?? / Nao Sha] in Chinese literature
9	Other related notes and bibliographical references