8vo in contemporary, marbled wrappers with title autographed on spine. Top edge trimmed, else uncut copy. Wrappers a bit rubbed and spine faded, but firm and tight in binding. No empty end papers, as issued. The first 10 pages with small wormholes in inner margin up to the left not concerning the text. Old name inside front wrapper. A clean, crisp copy with only occasional spots. XXXIX, (I) Errata, 512 p.
The famous Swiss scientist in biology and philosophy, Charles Bonnet has in this second edition added a number of important theses on the question the existence of God. This work is considered to be a work of theoretical biology.