SECT. VII. PHYSIOLOGY. 59 
compresses the nerves of the extremities. In the 
third stage, the surcharge of blood, by which the 
brain is overwhelmed, induces coma and death. 
cxxx. Artificial re-action may be effected by 
the internal use of alcoholic liquors, and the ex- 
ternal application of sinapisms, the spirituous 
vapour bath, and cauterization with diluted nitric 
acid, as recommended by Mr. Powell, assistant 
surgeon in the Bombay army. The coma of the 
third may also be averted by timely recourse to 
blood-letting... 
cxxxi. The above physiological fact may be 
briefly summed up under the following heads :— 
cxxxu. 1. Till the commencement of the 
second stage of Indian cholera, there is only a 
slight determination of the fluids to the alimentary 
canal. 
cxxxu. 2. The vital force being very low in 
the second stage, there is consequently a great 
reduction of the animal temperature, and the 
expansibility of the muscles, skin, and extreme 
vessels; while the blood accumulates in all the 
cavities, and its serum oozes from the intestinal 
exhalants. 
cexxxtv. 3. In the apoplectic stage, the mental 
functions become suspended by excessive pain, 
and a ‘superabundance of blood, from which 
proceed compressed brain and effusions of serum. 
