Chapter X: =Condensation of Electrification= 68

Exp. 82, To find whether a large surface will hold more
electrification than a small one.--Electrical Capacity.--Exp.
83, To find whether the capacity of a given conductor can
be increased without increasing its size.--Condensation;
Condensers.--The Leyden Jar.--Fulminating Panes.--Induction
Coil Condensers.--Submarine Cables.--Exp. 84, To study the
condensation of electrification.--Discussion.--Exp. 85, To study
the action of the condenser.--Discussion.--Exp. 86, To study the
effect of electrical discharges upon the human body.--Shocks;
Dischargers.--Exps. 87-88, To show the strong attraction between
opposite electrifications in the condenser.--Discussion.--Exp.
89, To show how the condenser may be slowly discharged.--The
Electric Chime.--Exp. 90, To ascertain the location of a charge
in a condenser.--Discussion.--Exp. 91, To find whether any
electrification remains in the condenser after it has once been
discharged.--Residual Charge.--Exp. 92, To study successive
condensation; the chime cascade.--Discussion.

CHAPTER XI. =Electroscopes= 77

Electroscopes.--Our leaf electroscope.--Exp. 93, To study the
leaf electroscope; charging by conduction.--Discussion.--Exp.
95, To learn some uses of the electroscope.--Discussion.--The
Proof-plane.

CHAPTER XII. =Miscellaneous Experiments= 81

Exp. 96, To show that friction always produces two kinds of
electrification.--Discussion.--Exp. 97, To show "successive
sparks."--Exp. 98, To show to the eye the strong attraction
between a charged and a neutral body.--Exp. 99, To feel the
strong attraction between a charged and a neutral body.--Exp.
100, The human body a frictional electric machine.--Static
Electric Machines.

CHAPTER XIII. =Atmospheric Electricity= 84

Atmospheric Electricity.--Lightning.--Thunder.--Lightning
Rods.--Causes of Atmospheric Electricity.--St. Elmo's
Fire.--Aurora Borealis.

PART III.--CURRENT ELECTRICITY.

CHAPTER XIV. CONSTRUCTION AND USE OF APPARATUS 89

Exp. 101, To study the effect of the electric current upon
the magnetic needle.--Electrical Connections.--Current
Detectors.--Exp. 102, To study the construction and use of a
simple "key."--Exp. 103, To study the construction and use of
a simple "current reverser."--Exp. 104, To study the simple
current detector.--Exp. 105, To study the construction and use
of the simple galvanoscope.--Discussion; True Readings.--Exp.
106, To study the construction and use of a simple astatic
needle.--Astatic Needles.--Exp. 107, To study the construction
and use of a simple astatic galvanoscope.--Astatic Galvanoscopes.