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Credit
D. Johannis Henrici Pott Observationum et animadversionum chymicarum praecipue circa sal commune, acidum salis vinasum et wismuthum versantium collectio prima [-praecipue zincum, boracem et pseudogalenam, tractantium collectio secunda] / [Johann Heinrich Pott]. Public Domain Mark. Source: Wellcome Collection.