Note 18 — APHORISMS—BOOK I ON THE INTERPRETATION OF NATURE AND THE EMPIRE OF MAN
Reading edition
Operatio spirituum in corporibus tangibilibus. Bacon distinguished with the schools the gross and tangible parts of bodies, from such as were volatile and intangible. These, in conformity with the scholastic language, he terms spirits, and frequently returns to their operations in the 2d book.—Ed.