original: "Circulus Aeterni Motus." This refers to the perpetual cycles of nature, where matter is constantly transformed through chemical and celestial influence.

This allegorical engraving features a central figure personifying Nature or Alchemical Science. The figure is framed by draped curtains and rests on heavy clouds. The face is a full moon topped with the symbol for Mars. Above the head, two celestial orbs contain the symbols for Saturn and Jupiter. Symbols for Venus and Mercury appear near the cheeks. The figure’s chest contains a dark lunar or solar disk. The abdomen depicts a transparent womb with a human fetus inside. Below the fetus, plants grow from a series of tiered, subterranean layers. These layers are marked with the seven planetary and alchemical symbols for metals: Gold, Silver, Copper, Iron, Tin, Lead, and Mercury. The figure holds a lyre in the right hand and a triangular set square in the left hand. Two disembodied arms reach in from the sides. The arm on the left is labeled Reason. The arm on the right is labeled Experience. The tool in the figure's hand is inscribed with Symmetry. Two large banners at the bottom contain the main title and a Greek motto.

Reason

original: "Ratio." In this context, it represents the theoretical or philosophical side of science.
Experience

original: "Experientia." This represents practical observation and laboratory work.

Symmetry

SUBTERRANEAN PHYSICS

original: "Physica Subterranea." This field of study examined the composition of the earth and how minerals and metals are formed within its crust.

THE UNIVERSE

original: "To Sympan." This Greek term signifies the totality of existence or the cosmos.