alchemy: oven (furnus)

alchemy alchymia aulla baking book burner chamber chemicals chemistry chrysopoeia compartment crystals deed elixir enclosed formula fornax furnus great grimoire heating hermetic iatrochemie kabbalistic knowledge laboratory lapis life magic magisterium magnum materia matters medieval metals minerals mystery mystic occult olla opus oven philosophers philosophorum prima quintessence roaster sign spagyric stone stuffs substance symbol synthesis tetrasomata transmutation vector zauberbuch