Philosophisches Licht und Schatten (1738)

[Paul Ferguson]

"Detailed instruction on Prima Materia Lapidis Philosophorum: In which ... is taught and demonstrated I. Which objects are to be avoided II. Which subject matter is to be selected, how the prima materia is to be prepared, and finally how Lapis Philosophorum is to be prepared and multiplied from this."

https://www.digitale-sammlungen.de/en/vi...21?page=,1