8vo in contemporary marbled wrappers with title autographed on spine. Top edge trimmed, else uncut copy. Wrappers slightly rubbed and spine faded. Firm and tight 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 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 of the existence of God. This work is considered to be a work of theoretical biology.