196 ANALYTIC PHYSIOLOGY. 
The nervous system of those individuals who 
possess the sanguine temperament, is most easily 
excited by the nitrate of silver; a circumstance 
which is to be borne-in mind, when this substance 
is applied to the spine. But when hemiplegia 
is relieved by lunar caustic, the cure goes on as 
fast when the eschar is about half the size of a 
Sixpence, as when it is much larger ; the nervous 
system requires a constant, but mild stimulant. 
The applications may be made on the back of the 
neck, and renewed every twelve or fourteen days. 
The longer a patient has been under the ope- 
ration of the nitrate of silver, the more sensible 
- he becomes to its influence; but if the treat- 
ment be pursued in a judicious manner, and only 
in proper cases, no untoward circumstance can 
arise from its use. 
Neuralgia.—The eschars for the cure of neural- 
gia of the sacral extremities, may vary from the 
size of a shilling to that of half-a-crown. The 
caustic must be applied over the course of the 
affected nerve, and rubbed till the part assumes a 
red colour studded with grey spots. Rest and 
warmth are to be strictly enforced during the 
cure, and a considerable time after recovery. 
White-swelling.—The custom of applying vio- 
lent stimulants in this disease, and converting 
chronic into acute inflammation, being universally 
followed by the regular as well as empirical part 

a ee 

