Leipzig, Gleditschen, 1734-42. 8vo. 2 cont. hcalf. Gilt backs. Backs rubbed, especially volume 2, which have been exposed to some damp, loosening the plates and some quires, but not dampstained. 2 engraved frontispieces. (6),(69o),(4);(6),543,140,(10) pp. and 46 engraved plates (36+10). Some light browning to inner margins in volume 2. Stamps on title-pages.
Largest edition of Wolff's well-known encyclopedia in which are treated all aspects of the mathematical sciences, pure as well as technical, the calculus, stereometrie, astronomy, hydrostatics, architecture etc. etc.