Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.
34/740
- Publication/creation
- Boston : Ticknor and Fields, 1861.
- Physical description
- 3 unnumbered pages, 716 pages, 2 leaves of plates : illustrations ; 26 cm
- Contributors
-
Garratt, Alfred C. (Alfred Charles), 1813?-1891
Harvey Cushing/John Hay Whitney Medical Library
- Notes
-
3d ed. has title: Medical electricity
Includes index and testimonials
- Type/technique
- Electronic books
- Subjects
-
Electrophysiology
Electrotherapeutics
- Attribution and usage
-
This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.
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is a non-conductor, or why these two fluids are so restrained in
their movements, until they accumulate to a given degree, we
cannot further explain, than to attribute this to their being held
by the peculiar particles of these bodies; but that when these
two influences — positive and negative — do unite by virtue of
their mutual attractions, they then become one natural electricity,
which is neutral, the relative action and influence of which is
insensible. Such are the more modern and commonly received
views, which are indeed based upon the celebrated " Summer's
two-fluid theory.1"
M. De la Rive, however, says, " We may for the present say
it is very probable that Electricity, instead of consisting of one,
or of two special fluids, sui generis, is nothing more than the
result of a particular modification in the state of bodies, which
modification probably depends on the mutual action exercised
on each other by the ponderable particles of matter, and the
subtile fluid that surrounds them on every side."
Ther mo-Electricity.
From the earliest times philosophers observed that heat facili-
tated the development of electricity, particularly if it was at-
tended with friction, and on insulating bodies. M. Becquerel
lays down as fundamental, that the propagation of heat, at least
in a metal, is always attended with a liberation of electricity,
and that the current is from the heated end towards the colder
end of the bar. Thermo-electric currents are not instantaneous,
like those of induction, and for that reason thermo-electricity is
not calculated for the production of electric currents, except in
particular cases, as where we are more concerned in studying the
effects of dynamic electricity, than in producing effects, or de-
termining the laws of its propagation. The titer mo-electric pile
of Nobili, formed at first of only six dry pairs of bismuth and
antimony, has been greatly multiplied and improved, so that it
now constitutes one of the most sensitive and delicate me'ans
known for appreciating differences of temperature. M. Melloni
improved this by composing a pile of some fifty small and slender