appears in dual form as lion and lioness, or he is said to be Mercurius duplex. The two lions are sometimes identified with the red and white sulphur. The illustrations show a furious battle between the wingless lion (red sulphur) and the winged lioness (white sulphur).
Jung identifies the alchemical lioness as white sulphur in polar opposition to the wingless lion, their furious battle encoding the passionate emotionality that must precede the coniunctio of unconscious opposites.
, Mysterium Coniunctionis: An Inquiry into the Separation and Synthesis of Psychic Opposites in Alchemy, 1955thesis