116 PLEURISY, &C, 



Causes of the Pleurisy. 



matter of no great concern, as the disorders arc 

 similar. It appears most probable that the in- 

 flammation arises in the pleura, and spreads from 

 thence to the lungs. 



The cause of this disorder appears to be from 

 cold, or whatever checks perspiration ; a sudden 

 and great distention of the pleura in respiration ; 

 drinking cold water after being heated by violent 

 exercise ; low, or high feeding ; a want of exercise 

 and bleeding; when the body is full of blood and 

 humours, riding a horse deep in cold water ; when 

 he is covered with perspiration, or, while in this 

 state, by letting him stand long in the cold. The 

 pleurisy, and most other inflammatory disorders, 

 frequently arise from the perspiration being sud- 

 denly stopped when overheated. 



The symptoms of a pleurisy, and the inflame 

 mation of the lungs, are much the same, except- 

 ing that, in the former, the horse shews great 

 restle;5Sness ^ heaves and works violently with his 



