1: Bohnenberger's electroscope 2: Two small electroscopes with elder pulp 3: Small insulator 4: Insulator (teaching model) 5: Ball electrifying machine (fragment) 6: Ball electrifying machine (fragment) 7: Cuthbertson's charge electrometer 8: Pliers with insulated handles 9: Flash tube 10: Electric carillon 11: Electric spider 12: Leyden bottle 13: Isolated conductor