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14 limb, and we can connect the ends of the copper wire with an electric battery. If I take into my hands the ends of the wires coming from the battery, I feel nothing, so that any force that may be coming from the battery is not

affecting my skin so as to cause any kind of sensation; but if I touch the tip of my tongue with the wires, I have a peculiar sensation of taste. The tongue tells me that something is affecting me, although the hands are apparently