Trebel, George. [from old catalog] · New York, F. Tousey · leaf 20
site characters ofthe two electricities. In this ingenious apparatus (Fig. 6), three little birds, made USE ELECTRICITY. 13 of pith ball or light paper, and painted to suit the taste, are keptsuspended by their mutual repulsion whilst the jar is charging;but when the charge arrives a certain degree… … The birds are attached to the wire by means of silk threads,and the two wires are inserted into the cork of a Leyden jar.The jar should not be fastened to the board. Charge the jarwith a friction machine and move its free knob up to the gun ofthe sportsman. This finishes the subject of the Leyden…
Electricity
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