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

Needham/NRI2/SCC2/79/4 contains:
1	Copy of a letter from Joseph Needham to B. J. Mason of Imperial College of Science and Technology, University of London, enquiring about early Chinese and Western references to the hexagonal symmetry of snow crystals and copy of Mason's reply
2	Joseph Needham's notes from various relevant publications and bibliographical references
3	Three typed drafts of a Joseph Needham and Lu Gwei-Djen paper entitled 'The Earliest Snow Crystal Observations'
4	Correspondence with the editor of 'Weather' magazine about the publication of an article by Joseph Needham and Lu Gwei-Djen entitled 'The Earliest Snow Crystal Observations'
5	Letter from Hans-Günther Körber of Berlin, Germany, commenting on an article by Joseph Needham and Lu Gwei-Djen entitled 'The Earliest Snow Crystal Observations'
6	Leaflet advertising 'Snow Crystals' by W. A. Bentley and W. J. Humphreys
7	Letter from Cyril Stanley Smith of the Massachusetts Institute of Technology commenting on Joseph Needham and Lu Gwei-Djen's paper entitled 'The Earliest Snow Crystal Observations' and discussing other matters
8	Letter from Arthur M. Lesk of the Medical Research Council Laboratory of Molecular Biology, about a Japanese representation of a snow crystal on a sword guard dated 1825 and photograph of same
9	Photographs of images of snow crystals
10	Joseph Needham's original file title