nsulated person bring some conducting substance
over the surface of the spirit, the experiment succeeds as well.

_The Electric Balloon._

Two balloons, made of the allantoides of a calf, are to be filled with
hydrogen gas, of which each contains about two cubic feet. To each of
these is to be suspended, by a silken thread about eight feet long,
such a weight as is just sufficient to prevent it from rising higher
in the air; they are connected, the one with the positive, the other
with the negative conductor, by small wires about 30 feet in length;
and being kept nearly 20 feet asunder, are placed as far from the
machine as the length of the wires will admit. On being electrified,
these balloons will rise up in the air as high as the wire will allow,
attracting each other, and uniting as it were into one cloud, gently
descending.

_The Illuminated Water._

Connect one end of a chain with the outside of a charged phial, and
let the other end lie on the table. Place the end of another piece of
chain at the distance of about a quarter of an inch from the former;
and set a glass decanter of water on these separated ends. On making
the discharge, the water will appear perfectly luminous.

The electric spark may be rendered visible in water, in the following
manner:--Take a glass tube of about half an inch in diameter, and six
inches long; fill it with water, and to each extremity of the tube
adapt a cork, which may confine the water; through each cork insert a
blunt wire, so that the extremities of the wires within the tube may
be very near one another; then, on connecting one of these wires with
the coating of a small charged phial, and touching the other wire with
the knob of it, the shock will pass through the wires, and cause a
vivid spark to appear within their extremities within the tube. The
charge in this experiment must be very weak, or there will be danger
of bursting the tube.

_The Electrified Ball._

Place an ivory ball on the prime conductor of the machine, and take a
strong spark, or send the charge of a Leyden phial through its centre,
and the ball will appear perfectly luminous; but if the charge be not
sent through the centre, it will pass over the surface of the ball and
singe it. A spark made to pass through a ball of box-wood, not only
illuminates the whole, but makes it appear of a beautiful crimson, or
rather a fine scarlet colour.

_Illuminated Phosphorus._

Put some of Canton's ph