Fortgesezte Beschreibung einer sehr wirksamen Elektrisir-Maschine von ganz neuer Erfindung und einiger zur elektrischen Praxis gehorigen Werkzeuge mit angehangten Versuchen.
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..... More