Experiments and Observations on Electricity Made at Philadelphia in America

By Benjamin Franklin

Page 4

thread instantly attracted by the bottle. (This is best
done by a vinegar cruet, or some such belly'd bottle). As soon as you draw
any fire out from the upper part by touching the wire, the lower part of
the bottle draws an equal quantity in by the thread.


EXPERIMENT III.

FIG. 2. Fix a wire in the lead, with which the bottom of the bottle is
armed, (_d_) so as that bending upwards, its ring-end may be level with the
top or ring-end of the wire in the cork (_e_), and at three or four inches
distance. Then electricise the bottle, and place it on wax. If a cork
suspended by a silk thread (_f_) hang between these two wires, it will play
incessantly from one to the other, 'till the bottle is no longer
electrised; that is, it fetches and carries fire from the top to the bottom
of the bottle, 'till the equilibrium is restored.


EXPERIMENT IV.

FIG. 3. Place an electricised phial on wax; take a wire (_g_) in form of a
C, the ends at such a distance when bent, as that the upper may touch the
wire of the bottle, when the lower touches the bottom: stick the outer part
on a stick of sealing wax (_h_) which will serve as a handle. Then apply
the lower end to the bottom of the bottle, and gradually bring the
upper-end near the wire in the cork. The consequence is, spark follows
spark till the equilibrium is restored. Touch the top first, and on
approaching the bottom with the other end, you have a constant stream of
fire, from the wire entering the bottle. Touch the top and bottom together,
and the equilibrium will soon be restored, but silently and imperceptibly;
the crooked wire forming the communication.


EXPERIMENT V.

FIG. 4. Let a ring of thin lead or paper surround a bottle (_i_), even at
some distance from or above the bottom. From that ring let a wire proceed
up, 'till it touch the wire of the cork (_k_). A bottle so fixt cannot by
any means be electrised: the equilibrium is never destroyed: for while the
communication between the upper and lower parts of the bottle is continued
by the outside wire, the fire only circulates: what is driven out at
bottom, is constantly supply'd from the top. Hence a bottle cannot be
electrised that is foul or moist on the outside.


EXPERIMENT VI.

Place a man on a cake of wax, and present him the wire of the electrified
phial to touch, you standing on the floor, and holding it

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