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The works of the highly experienced and famous chymist, John Rudolph Glauber: containing, great variety of choice secrets in medicine and alchymy in the working of metallick mines, and the separation of metals. Also, various cheap and easie ways of making salt-petre, and improving of barren-land, and the fruits of the earth / Translated into English, and pub. for publick good by Christopher Packe. Public Domain Mark. Source: Wellcome Collection.