JOHANNES ALPHONSUS BORELLUS

Professor of Mathematics at Naples

ON THE

FORCE OF PERCUSSION,

AND

NATURAL MOTIONS

DEPENDENT UPON GRAVITY,

Physico-Mathematical Introductions and Illustrations highly necessary

for understanding his work

ON THE

MOTION OF ANIMALS

Together with the same Author's responses to the animadversions of the most Illustrious

and Learned Man, D. Stefano de Angelis, regarding the book on the Force of Percussion.

FIRST BELGIAN EDITION,

Much more correct and augmented than the previous Italian one, to which, in place of the woodcut figures of the former edition, have been substituted the finest copperplate engravings, along with three most comprehensive indices.

Edited by J. BROEN, M. D. of Leiden.

An allegorical printer's mark features two seated figures, possibly representing Science and Nature or Wisdom, flanking a central tripod or brazier. Above them is a banner with the Latin motto "Nature works toward art." The figures are surrounded by various instruments and symbols of learning. Below the scene is a decorative mask.

LEIDEN,

By PIETER VAN DER AA, 1686.