Title page of De Arte divina & sacra, sine Aenigmate tradita & del praxin conscripta by Anonymous, ca. 1700. At the top of the painting you can see the Greek God Hermes, representing the element Mercury, the peacock representing the end of the Nigredo stage, and the element of air, represented by the faces blowing. From Manly P. Hall's collection of alchemical manuscripts Box 3, MS 14