The four figurines of
The Layer Quaternity share a number of iconographical details with those found in an illustration in
Alchemia (1606) by the German academic
Andreas Libavius in its chapter entitled
De Lapide Philosophorum (
The Philosophers' Stone). These include - an identical pairing of a lower, mortal pair with an immortal pair, a bare-legged male with a draped female above, the titulary captions of
Gloria and
Labor, a palm branch, the sun and moon, and a rotundum. Symbolically, the Layer Quaternity correspond to the alchemical "deities" of
Apollo,
Luna,
Mercurius and
Vulcan as named in
Atalanta Fugiens (1617) by the German alchemist-physician
Michael Maier (Emblem XVII). Collectively the Layer Quaternity are a unique alchemical
mandala. Through polarized symbolism they delineate essential coordinates associated with Mandala art, namely Space (Heaven and Earth) and Time (Young and Old). Utilizing variety and multiplicity, key attributes of Northern Mannerist art, they also represent fundamental aspects of the human condition, namely, gender, youth and age, pleasure and suffering. A fifth, uniting symbol, a skull, is located at the very centre of the monument. The skull is the commonest of all
memento mori symbols in
funerary art. It was also defined as the philosophical vessel (
Vas Philosophorum) in Renaissance-era alchemy. The role of the Quaternity in religious symbolism is discussed in depth in the writings of the Swiss psychologist
Carl Gustav Jung. In essence, the Layer monument's four figurines represent spiritual entities which agree with Jung's analytical psychology, that the psyche moves toward individuation in fours (made up of pairs of opposites). == See also ==