This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Carl Jung's study of alchemy reads the tradition from the opposite direction Principe's laboratory focused account takes, treating alchemical texts and their substances primarily as a symbolic language for psychological transformation, the alchemist's laboratory work standing in for an inner process of integrating unconscious material, with a substance's color changes and its passage through stages read as stages of that inner work rather than as chemistry for its own sake.
That reading matters for an alchemical substance entry because the same historical substance can carry both a documented material identity and a separate, later psychological reading attached to it well after the original alchemical period, and an entry keeps those two accounts distinct rather than treating one as simply the hidden truth behind the other.
Neither account replaces the other. A substance entry records what alchemical writers themselves said a material did and meant, records its plain chemical identity where one is known, and, where a later psychological or spiritual reading has become influential in its own right, records that reading too, clearly marked as a later interpretation rather than as the alchemists' own stated understanding of their work.