Opera Mineralia-De Lapide Philosophico

Instead of distillations on liquids and oils extracted from plants, in chap three, Johannes Isaac Hollandus has salts ground, dissolved in distilled vinegar, then raised 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 of 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