Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.
52/740
- 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:
7. The northern currents of
atmosphere, accompanied as
they are with magnetism, have
the power of expansive action
on the mercurial column of the
barometer, wherever it may be
placed, either in a warm room,
or in the open air.
8. Snow from the north-west
wind has been found to con-
tain more oxygen than rain or
river water, and more carbon.
9. The magnetic intensity of
the earth is indicated by nee-
dles suspended vertically; and
in sailing from England towards
the north pole, it is seen that
the needle dips, or inclines more
and more, with the increase of
latitude, till at a certain point it
remains exactly perpendicular,
with its south pole downwards.
7. The southern currents of
the atmosphere, accompanied
with free electricity, cause a
fall of the mercurial column
under any circumstance of po-
sition of the barometer.
8. Electricity causes the rain
to descend with less oxygen
than snow water; and less car-
bon also.
9. In sailing towards the
equator, with a magnetic nee-
dle suspended in the like man-
ner, the inclination or dip
gradually decreases, until the
needle rests in a perfectly hor-
izontal position.
The above are some of the reasons which have induced me
to think that magnetism and electricity are not strictly iden-
tical, their operations being as distinct as heat and cold ; and I
have therefore come to an analysis of the influence of the winds,
and a theory to establish something of a definite character.
Winds are not decisive as to their influence on health, when
continually changing ; that is, not remaining in any fixed quar-
ter for two or three hours at least. Winds have been known
to blow from different currents, as spoken of before. Mr. Green,
the aeronaut, in his celebrated aerial trip from Yauxhall Gar-
dens to Nassau, in Germany, frequently availed himself of the
different currents of air at different altitudes, by raising and
lowering his balloon ; and in this way he regulated his passage
across the Channel, opposite Dover. The highest elevation
4