The Alchemical Coniunctio (Aurora Consurgens)

This manuscript illumination features a king and queen engaged in the 'chymical wedding' or coniunctio, the mystical union of opposites. They lie on a white bed sheet beneath a bright blue sky, flanked by two fruit-bearing trees and enclosed by a low wattle fence. The figures are rendered with light, monochromatic washes, emphasizing their intertwined limbs and the intimacy of the embrace. The composition uses the garden setting to symbolize the hortus conclusus, a place of spiritual and alchemical transformation.

The image represents the 'coniunctio oppositorum' (conjunction of opposites), a central concept in alchemy denoting the union of Sol (the Sun/King) and Luna (the Moon/Queen) to create the Philosopher's Stone. It is a key illustration from the 'Aurora Consurgens', a 15th-century alchemical treatise attributed to Thomas Aquinas, which uses biblical imagery, particularly from the Song of Songs, to describe the alchemical process.