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London, Wellcome Institute MS. 3930. 32 folios. 295x190mm. 19th Century [1885-97.] Holograph copies of correspondence between Albert Poisson and Paul Reybet, and others; mainly from 2 April, 1892 to 21 March, 1893, on alchemical matters. With inserted original letters, etc., from other contemporary French alchemists.
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