Opera Mineralia-De Lapide Philosophico

Instead of distillations on liquids and oils extracted from plants, in chap three Johannes Isaac Hollandus has salts grinded, dissolved in distilled vinegar, then raised up with subtle combustible spirits, [Read more…] about Hollandus, De Lapide Philosophico. First Book 3-4

Opera Mineralia, sive de Lapide Philosophico,  by Johannes Isaac Hollandus,  chapter two deals with  actions  involving silver cupeling. [Read more…] about Hollandus, De Lapide Philosophico. First Book 2

Johannes Isaac Hollandus De Lapide Philosophico is composed by two treatises, but usually only a summary of the second one is available on the web. [Read more…] about Hollandus, De Lapide Philosophico. First Book 1