Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.
118/740
- 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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The image contains the following text:
and friction on wood, as to produce a profusion of high tension
electricity, that by far exceeds any friction electrical machine.
I saw an apparatus both in London and in Paris made expressly
for this purpose, called the hydro-electric machine. By this not
only a patient, but a whole ward, patients and all, could be so
situated and maintained by it for any requisite time. But ac-
cording to my own experience, the utility of tension by insula-
tion is quite limited to a few certain cases and conditions, which
will be clearly designated when I come to treat of its therapeu-
tic application for nervous diseases.
Galvanic Electricity and Apparatus.
This term is given to that important form of electricity that
is produced by chemical action. But probably the most simple
example of this kind of electricity is shown by merely enclosing
the tongue, for instance, between two different clean metals,
from which the current is instantly set in motion, even sufficient
to be sensible. This may be proved by any one^ if they place a
piece of silver or gold on the one side of the tongue, and then
at the same time a piece of copper or zinc on the other side of
the tongue, or, what is better still, simply a piece of clean zinc
on the one side, while there is a piece of clean silver on the
other. As long as the metals arc so placed and held, there is
no taste or sensation ; but if now the outer edges of the two
metals are brought together, or if by means of a bit of wire
they are brought in contact or communication, then instantly
there is demonstrated the galvanic action. If this does not
readily appear at the first contact, repeat the opening and closing
of the metallic contact quick or slow, and it will be decidedly
manifested both by taste and sensation.
When two metals are placed in contact direct, or by means of
a connecting wire, and when these are placed in a liquid or
liquids capable of acting 17011 the one more than upon the
other, then that peculiar electricity is evolved that we term
voltaic electricity, galvanic electricity, or galvanism. The origi-
nal pile for producing this current was devised by Dr. Volta, an