Isaac and Johann Isaac Hollandus
Isaac and Johann Isaac Hollandus | |
|---|---|
| Occupation | Alchemists |
Isaac and Johann Isaac Hollandus were a 17th-century pseudonymous Dutch alchemist duo.[1][2] It is not clear if they were father-and-son, brothers, or even the same person.[3][1][2] The last part of their pseudonym, "Hollandus", simply referred to their home country of Holland.[3] Some believed they were Jews, and have given this as a reason as to why they stayed anonymous.[3] Isaac and Johann wrote "De Triplici Ordinari Exiliris et Lapidis Theoria" and "Mineralia Opera Sue de Lapide Philosophico".[4]
They were originally believed to be from the 14th or 15th century, predating Paracelsus.[1] They were among the most famous alchemists in Europe at one point in time.[1] Johann von Löwenstern-Kunckel stated that "the incomparable Isaac Hollandus" "had more knowledge in his little finger than Van Helmont in his whole body".[1] However, Isaac and Johann Isaac Hollandus fell out of favor in the early 20th century after it was concluded they were actually post-Paracelsus.[1]
References
- ^ a b c d e f Chymia: Science and Nature in Medieval and Early Modern Europe. Cambridge Scholars. 2010. pp. 310–329.
- ^ a b Stillman, John Maxson (1924). The story of early chemistry. D. Appleton & Company. pp. 368–372.
- ^ a b c Patai, Raphael (1994). The Jewish Alchemists. Princeton University Press. pp. 289–292.
- ^ Cockren, Archibald (1941). Alchemy Rediscoverd and Restored.