Hydraulic and Pneumatic Mechanics

A highly detailed woodcut or engraving shows a complex heraldic achievement. This represents a Prince-Bishop of the Holy Roman Empire, specifically Johann Philipp von Schönborn, who held the titles of Archbishop of Mainz and Bishop of Würzburg. The central feature is a large, heart-shaped shield quartered with various heraldic charges. Symbols include a wheel, which is the emblem of the Archbishopric of Mainz, and the Würzburger Rechen, a dancetty or zigzag pattern with three points used by the Bishopric of Würzburg. The shield also displays a banner on a lance and a lion rampant.

Above the shield sit five tournament helmets in profile. Each helmet has elaborate decorative mantling and a specific crest. From left to right: a bundle of rods or arrows behind a diagonal sword, a wheel crest, a tall clerical mitre topped with a small cross, a pair of curved horns flanking a central figure, and a lion rampant emerging from a crown.

The entire achievement is surrounded by scrolling acanthus-leaf mantling. The composition is contained within a rectangular border. Four smaller oval shields are located in the corners, each displaying an individual heraldic device. The style is typical of 17th-century German heraldry.