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London, Wellcome Institute MS. 523. 100 folios. 200x140mm. 15th Century [1430.] Miscellanea Alchemica XX. [Aix.]
1. f2-16 J. Saulnier. De la transmutation des métaux.
2. f18-71v J. de Rupescissa. De consideratione quintae essentiae [first 10 1/2 chapters wanting.]
3. f72-100v Arnoldus de Villanova. Liber de aquis.
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