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Prosperitatis Germaniae pars .... 2, Mineralia per nitrum condensandi, aut concentrandi, & in metallica, ac meliora corpora mutandi modum & rationem complectens
Johann Rudolph Glauber argues that traditional smelting is a wasteful, archaic practice that throws away fortunes in gold and silver. He reveals how the secret use of saltpeter can transform mineral waste into national prosperity.