is extremity of the pin, which is
wrapped up in cotton, in some fine powdered resin; then apply the
extremity of the pin or wire to the external coating of the charged
phial, and bring, as quickly as possible, the other extremity, that is
wrapped round with cotton, to the knob; the powdered resin takes fire,
and communicates its flame to the cotton, and both together burn long
enough to light a candle. Dipping the cotton in oil of turpentine will
do as well, if you use a larger sized jar.

_Candle Bombs._

Procure some small glass bubbles, having a neck about an inch long,
with very slender bores, by means of which a small quantity of water
is to be introduced into them, and the orifice afterwards closed up.
This stalk being put through the wick of a burning candle, the flame
boils the water into a steam, and the glass is broken with a loud
explosion.

_The Artificial Spider._

Cut a piece of burnt cork, about the size of a pea, into the shape of
a spider; make its legs of linen thread, and put a grain or two of
lead in it to give it more weight. Suspend it by a fine line of silk
between an electrified arch and an excited stick of wax; and it will
jump continually from one body to the other, moving its legs at the
same time, as if animated, to the great surprise of the unconscious
spectator.

_The Miraculous Portrait._

Get a large print (suppose of the king) with a frame and glass. Cut
the print out at about two inches from the frame all round; then with
thin paste fix the border that is left on the inside of the glass,
pressing it smooth and close; fill up the vacancy, by covering the
glass well with leaf-gold or thin tin-foil, so that it may lie close.
Cover likewise the inner edge of the bottom part of the back of the
frame with the same tin-foil, and make a communication between that
and the tin-foil in the middle of the glass; then put in the board,
and that side is finished. Next turn up the glass, and cover the
fore-side with tin-foil, exactly over that on the back part; and when
it is dry, paste over it the panel of the print that was cut out,
observing to bring the corresponding parts of the border and panel
together, so that the picture will appear as at first, only part of it
behind the glass, and part before. Lastly, hold the print horizontally
by the top, and place a little moveable gilt crown on the king's head.

Now, if the tin-foil on both sides of the glass be moderately
electrified, an