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Prosperitatis Germaniae pars .... 3, In qua Salpetrae ex variis ubiq, obviis subiectis facillime atque copiose extrahendi modus traditur. Eiusve utilitates summae declarantur
Johann Rudolph Glauber argues that saltpeter is the hidden engine of the natural world and the key to Germany's economic independence. Readers will find practical laboratory methods to extract precious metals from base materials and a bold reinterpretation of ancient alchemical prophecies.