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

Needham/NRI2/SCC6/24 contains:
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29	Copies of 2 letters from John Combridge of Ilford, Essex, to Dr. A. W. Sleeswyk of Groningen, Holland, about the interpretation of Chinese texts for the reconstruction of the steelyard clepsydra
30	Letter from Dr. André W. Sleeswyk of Gronigen, Holland, about the design of his reconstruction of the Chinese steelyard clepsydra, and related documents
31	Letter from Prof. A. Rupert Hall of Imperial College of Science and Technology, London, about the publication of Dr. André W. Sleeswyk's paper 'The Celestial River: A Reconstruction' in 'History of Technology, 1978'
32	Typescript headed 'Chinese Steelyard Clepsydra: (Provisional revised translation of the description in 'Guo-shi zhi', see J. Needham 'Heavenly Clockwork' pp.90-94)'
33	Photocopy of a diagram showing the transmission system of the Kai-Feng Clock of A.D. 1088
34	Copies of 2 letters from John Combridge of Ilford, Essex, to Richard Watanabe of Ontario Science Centre, Canada, about Watanabe's work on a reconstruction of an astronomical clock tower
35	Cutting of a 'Guardian' article by Anthony Tucker entitled 'Just a second..you mean the clock's gone wrong' about the adding of an extra second to a day in order to regulate time
36	Letter from John H. Combridge of Ilford, Essex, about the publication of a response to Dr. André W. Sleeswyk's paper 'The Celestial River: A Reconstruction' in 'Technology and Culture'
37	Correspondence with Prof. André Sleeswyk of Groningen, Holland, about the possibility of his spending a sabbatical year in Cambridge, and related documents
38	Copies of correspondence between John H. Combridge of Ilford, Essex, and Dr. Melvin Kranzberg of 'Technology and Culture' about the publication of a response to Sleeswyk's paper 'The Celestial River: A Reconstruction' in 'Technology and Culture'
39	Letter from Prof. André Sleeswyk of Groningen, Holland, about his wish to spend a sabbatical year in Cambridge, and attached documents
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