back to The Essential Key of the Great Work
Alchemy is very much a process of meditation. The crossed arms indicate the alchemist has his attention directed inwards.
The black raven is the symbol of the first stage of the Great Work: Nigredo or Blackness.
The two cherubim show that he is working on his inner, spiritual self.
The seven stars are the seven planets or metals, which are different stages in the Great Work. More about that later.
The wind and fire indicate that you have to keep your 'fire', your energy, your attention going.