Translated as "The Movement of Comets in the Northern Hemisphere," this chart focused on illustrating the paths of comets across the sky in the northern hemisphere. Comets were objects of great curiosity and interest in this era. Understanding their movements was crucial for astronomers to progress in their understanding. The chart depicts the trajectories of notable comets observed up to that time, along with information about their appearances and movements.

Motus Cometarium in Hemispaerio Boreali