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A short alchemical tract. The Chemists Key to Shut and Open: As the True Doctrine of the Corruption and Generation in Ten Brief Aphorisms, Illustrated with most plain and faithful Commentaries, out of the Pure Light of Nature: By that Judicious and Industrious Artist, Henry Nollius.
This book has 27 pages in the PDF version, and was originally published in 1657.
Production notes: This ebook of The Chemists Key was published by Global Grey in 2018.