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+--- Thread: At the Beinecke: Rupescissa, Llull, Kertzenmacher (/showthread.php?tid=2676)
At the Beinecke: Rupescissa, Llull, Kertzenmacher - Paul Ferguson - 11-10-2025
"Manuscript on paper of a large quantity of alchemical recipes and procedures, relating above all to metallurgy and transmutation. With Alchimie und Bergwerck; and German translations of John of Rupescissa, De consideratione quinte essentie; and Ramon Lull, Extracts from Experimenta and Testamentum novissimum."
https://collections.library.yale.edu/catalog/2066760