HASI Database search

Klingelfuss	Hartmann and Braun A	Needle telegraph	Electroscope
Glass drilling appar	Switch contact rheos	Electrometer	Vertical demonstrati
Leyden jar	Glass bar for experi	Switch contact rheos	Galvanometer
Ruhmkorff's coi	Dynamo generator	Electrolytic apparat	Morse telegraph
Electric machine aft	Electric machine aft	Sparkling pillars	Franklin's Bell