Emblem representing the path to the philosopher's stone in alchemy. Etching by Defehrt, 1768, after L.-J. Goussier, after the frontispiece to a 17th century book by Libavius.

Two atlantes balance the globe upon their backs; underneath a hydra breathes fire upon it. The first level of the globe shows Hermes harnessing a griffin and a lion with chains. The next level shows a face, a lion, and a triple-headed swan (?) breathing air; the next shows eagles swimming up to an island; above which, in the clouds, an eagle floats, swallowing its own tail. Above, an atlante and a caryatid hold spheres containing suns and moons respectively. Above this is a circle containing a king and queen harnessing a lion and eagle respectively. A phoenix in a wreath of clouds and other birds crowns the whole hierarchy