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Then, with the two copper connecting-wires, connect the post which stands on the wooden bar above the platina with the post stamped P on the helix-box, and the brass clamp N with the post N on the helix-box.
When the conducting-cords are not attached to the machine, or when the communication between the cords is not complete, if the machine be running, the circuit is then composed of the battery fluid, the platina plate, the posts, the connecting-wires, which unite the battery with the helix, the helical wires, and their appendages for the vibrating action.
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