Contents A group of alchemic prescriptions. The first text is a letter presumably attributed to Ramon Llull (c. 1232-c. 1315), a polymath of great fame who paved to way to subsequent knowledge in many fields such as mathematics, logic, and theology. Several texts have been falsely attributed to Llull and started to circulate under his name from the 14th century; many of these texts concern alchemy. This particular letter concerns the process of fixation (in alchemy, the transformation of a volatile...