My method of ordering the chaos of alchemy is to focus on the major alchemical operations. After the prima materia has been found, it has to submit to a series of chemical procedures in order to be transformed into the Philosophers’ Stone.
Edinger establishes the alchemical operation as the primary organizing principle for interpreting the entire symbolic corpus of alchemy, arguing that all alchemical and much mythological imagery can be ordered around these procedural stages.
, Anatomy of the Psyche: Alchemical Symbolism in Psychotherapy, 1985thesis