If the ends of the wires of a small galvanic battery are connected with
a proper electro-magnetic coil, which may now be purchased at a very
cheap rate, and the wires from the coil be placed in separate basins
of water, then, on dipping the fingers of each hand in the basin, a
smart shock will be felt, with a particular aching accompanied with
trembling. With a strong battery and larger coil this effect is felt as
high as the shoulders. The shock will also be felt by simply holding
the wires of a powerful galvanic battery, one in each hand, provided
the hands be moistened with salt and water. Several persons may receive
the shock from the battery and coil together by joining hands.