A detailed seventeenth-century engraving of the astronomer Johannes Phocylides Holwarda, featuring celestial symbols and memento mori motifs.

This engraving by Crispijn van de Passe (II) depicts the Frisian astronomer and physician Johannes Phocylides Holwarda. The portrait is presented within a classic oval frame, a common convention for seventeenth-century scholarly portraiture. The subject is shown in a three-quarter view, wearing the sober, dark attire typical of the Dutch academic class during this period. His expression is composed, reflecting the intellectual rigour associated with his work in mathematics and philosophy.

The surrounding iconography provides context for Holwarda's scientific pursuits. Above the portrait, the sun and moon are depicted, referencing his observations of celestial bodies, most notably his identification of the periodic variability of the star Mira. Below the frame, a skull and crossbones are positioned to the right, serving as a memento mori, while a rose branch on the left introduces a contrasting element of natural beauty. These symbols reflect the era's preoccupation with the intersection of scientific inquiry and the transience of human life.

Van de Passe employs precise line work to define the textures of the subject's clothing and the subtle modelling of his features. The Latin inscription beneath the portrait serves to identify the sitter and provide a brief eulogy, a standard practice for printed portraits of the time intended for inclusion in books or as independent collector's items. The composition is balanced and formal, adhering to the conventions of the Dutch Golden Age print tradition. This work offers a glimpse into the visual culture of seventeenth-century European academia, where scientific achievement was frequently documented through the medium of fine engraving.