n for a sensible time, so that its successive discharges rather
resemble those of a voltaic arrangement, intermitting in its action, than
those of a Leyden apparatus, charged and discharged many times in
succession. In reality, however, there is _no philosophical difference_
between these two cases.

360. The _general conclusion_ which must, I think, be drawn from this
collection of facts is, that _electricity, whatever may be its source, is
identical in its nature_. The phenomena in the five kinds or species
quoted, differ, not in their character but only in degree; and in that
respect vary in proportion to the variable circumstances of _quantity_ and
_intensity_[A] which can at pleasure be made to change in almost any one of
the kinds of electricity, as much as it does between one kind and another.

[A] The term _quantity_ in electricity is perhaps sufficiently definite
as to sense; the term _intensity_ is more difficult to define strictly.
I am using the terms in their ordinary and accepted meaning.

Table of the experimental Effects common to the Electricities derived from
different Sources[A].

Table headings

A: Physiological Effects
B: Magnetic Deflection.
C: Magnets made.
D: Spark.
E: Heating Power.
F: True chemical Action.
G: Attraction and Repulsion.
H: Discharge by Hot Air.
_________________________________________________________
| | | | | | | | | |
| | A | B | C | D | E | F | G | H |
|_________________________|___|___|___|___|___|___|___|___|
| | | | | | | | | |
| 1. Voltaic electricity | X | X | X | X | X | X | X | X |
|_________________________|___|___|___|___|___|___|___|___|
| | | | | | | | | |
| 2. Common electricity | X | X | X | X | X | X | X | X |
|_________________________|___|___|___|___|___|___|___|___|
| | | | | | | | | |
| 3. Magneto-Electricity | X | X | X | X | X | X | X | |
|_________________________|___|___|___|___|___|___|___|___|
| | | | | | | | | |
| 4. Thermo-Electricity | X | X | + | + | + | + | | |
|_________________________|___|___|___|___|___|___|___|___|
| | | | | | | | | |
| 5. Animal Electricity | X | X | X | + | + | X | | |
|_________________________|___|___|___|___|___|___|___|___|