Trebel, George. [from old catalog] · New York, F. Tousey · leaf 38
magnetism, which, though differing in many of their proper-ties, yet alike in many, and almost invariably accompanyingone another, and constantly merging one into the other, appearas if they were only different manifestations of one and thesame agent. BATTWJ … Suspend two copper wires (Fig. 2), each 12 inches long,and about 1-2 inch apart, with their lower extremities dippingabout 1-4 inch into mercury, so as to move with little resistanceeither toward or from each other. Place one wire of the bat-tery in the mercury, and attach the other to the hooks…
Electricity
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