Month: June 2015

Clavis Artis, Zoroaster

Zoroaster’s Clavis Artis, a mysterious alchemical manuscript

Clavis Artis is the title of an alchemical manuscript published in Germany in three volumes in the late 17th or early 18th century, attributed to Zoroaster (Zarathustra). It features numerous watercolor illustrations depicting alchemical images, as well as pen drawings of laboratory instruments. Three copies of the manuscript are known to exist, one at the Biblioteca […]