hardcover. WITH: Zweyte Fortsezung. 2 works in 1. 10 folding copperplates, one in facsimile. 110, 138pp. 8vo, cont. boards (damaged); some worming on margins, no text damage. Stutgart: Johann Benedikt Mezler, 1786. First Editions.
Two reports on the Walkiers de St. Amand electrical machine and various experiments conducted with it, by a German enthusiast. Between 1784 and 1791 Bohnenberger published seven reports on his scientific investigations in electricity. The Walkiers machine was also used by members of the Paris Academy of Sciences in several successful experiments. Wheeler 534 (1st report); second not in Wheeler. Rare. NUC lists 4 copies.