General Principles of Physiology. 115 
in which transmission through the stomach and lungs has still 
appeared to me the best means of applying it. In certain 
species of fever, and other cases attended with deficient nervous 
energy, we have reason to believe that it will be found a valua- 
ble remedy. 
I may close these observations by observing, that when galva- 
nism is not used to such extent as to occasion an inflammatory 
tendency, I have never seen any bad effect from it, except a 
sense of languor, similar to the feeling of fatigue, when its em- 
ployment has been too long continued. The inflammatory 
tendency produced by it, according to my experience, is always 
easily removed; is never followed by any serious consequence ; 
and, with a little care, may almost always be prevented. I have 
_repeatedly observed that when the cure has advanced to a 
certain point, its judicious employment, so far from causing the 
inflammatory tendency, has, by improving the state of the 
secreting surfaces, relieved that caused by the disease. 
Art. 1X. Meteorological Observations in a Voyage across 
the Atlantic. By H. T. Couesrooxtg, Esq. 
Durine a recent voyage, in which I traversed both the 
Northern and Southern Atlantic twice, my attention was en- 
gaged, among other meteorological observations, to note the 
temperature of the sea’s surface, of the atmosphere over it, and 
the hygrometric state of the air. 
Upon the sea, as phenomena are little varied, their causes 
may be the more easily investigated, provided observations be 
sufficiently multiplied. Upon land, where changes are more 
frequent, and appearances more diversified, it is difficult to set 
aside extraneous and incidental circumstances, to fasten upon 
those which are effective and essential. 
In the middle of the ocean, where winds are constant and 
the seasons regular, a continued sameness presents particular 
facility for such inquiries. There are fewer casual concomi- 
Vor. XIV. I 
