| http://www.w3.org/ns/prov#value | - The wiring of the solenoids c is connected with a source of electrical energy, and I prefer to make the connection as indicated in Fig. 1, where e is a conducting bar suitably insulated from frame a, with which the wiring from all said solenoids is connected, said bar 6 being connected by a wire f with one pole of the source of electricity g.
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