A man in the foreground conducts an alchemical experiment with an alembic; in the background a female figure representing the world looks at a chemist, who prepares an oxygen experiment with a glass jar and a candle; representing the historical transition from alchemy to chemistry. Stipple engraving by J. Chapman, 1805, after R. Corbould.

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A man in the foreground conducts an alchemical experiment with an alembic; in the background a female figure representing the world looks at a chemist, who prepares an oxygen experiment with a glass jar and a candle; representing the historical transition from alchemy to chemistry. Stipple engraving by J. Chapman, 1805, after R. Corbould. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.