Io. Bapt. Portae Neapolitani Magiae natvralis libri XX
Giambattista della Porta's Magiae naturalis, a 1589 Latin natural-philosophy treatise printed in Naples by Horatio Salviani, aimed at scholars and readers of early science and industrial arts. The four pictures are near-identical horizontal printer's ornaments: a central oval cartouche flanked by scrolled brackets, rams-head or eagle-head medallions at each end, and ribbon-like strapwork below, all in woodcut line.












































