Calcination. On the left an alchemist bearing tongs attends a square furnace from the top of which flames and smoke emerge. On the right below a window a Sun-headed man and a Moon-headed woman sit at a table flanking an old bearded man with wings, whose hands are raised seemingly in blessing. On the table two flowers possibly roses grow out of a triangular crucible. In the foreground in front of the table A lion is in the act of devouring a snake.