154 MANUAL OF EQUINE MEDICINE. 



of the acute symptoms. The diet should be light and nu- 

 tritious, and easily assimilable. The box in which the 

 horse is placed should be well ventilated, but not draughty, 

 and the body should be kept warm with clothing. Water 

 may be allowed freely from the first onset of the 

 disease. 



PNEUMONIA, OR INFLAMMATION OF THE 

 LUNGS. 



Inflammatory processes in the lungs comprise the follow- 

 ing three chief varieties : 



L Acute, plastic, lobar, croupous pneumonia. 



2. Catarrhal, lobular or broncho-pneumonia, 



3. Chronic, or interstitial pneumonia. 



ACUTE PNEUMONIA is now accepted as a general 

 disease, of which pneumonic consolidation is the prominent 

 local lesion. There is some j^robability, from its clinical 

 features, of this disease being due to a living specific germ 

 or bacterium. 



CATARRHAL PNEUMONIA is inflammation of the lung- 

 tissue associated with and usually secondary to inflammation 

 of the bronchial mucous membrane occurring indepen- 

 dently or as a complication of some specific fever. 



It is at first usually limited to scattered groups of air- 

 cells, and hence is termed lobular. 



INTERSTITIAL PNEUMONIA— Probably never occurs 

 as a primary and independent afiection. In all cases it is 

 probably the sequel of some more acute inflammation of 

 the pulmonary or bronchial tissues, or of the pleura. 



ETIOLOGY OF PNEUMONIA.— The usual exciting 

 causes of pneumonia are sudden chills, exjjosure to wet and 

 cold, especially after severe exertion or fatigue, and con- 

 finement in draughty or foul and badly ventilated stables. 



