Berlin: Georg Reimer, 1852. Five items. 8vo. 28; 39, ; 38; 5 pp. FIRST AND ONLY EDITIONS. Each disbound, as issued; lightly browned. Item #4964
First and only edition. The first lecture includes "historical notes on the compass, Faraday's researches on diamagnetism (and notes about) polar aurorae." Beetz (1822-1886), a German physicist, was one of the founders of the German Physical Society. He devoted much research to electricity and also made improvements to the Wheatstone bridge.