148 MANUAL OF EQUINE MEDICINE. 



instance, compound camphor liniment, should be applied 

 externally. If the bowels are inactive, enemas should be 

 administered, and if they still continue very constipated, a 

 dose of linseed oil may be given. 

 *X A draught, made up of three ounces of solution of 

 acetate of ammonium, half an ounce of nitric ether, one 

 drachm of camphor, and half an ounce of tincture of squills, 

 may be given three times daily, in eight ounces of water. 



In cases where the small tubes are much affected, blisters 

 or stimulating liniments may be applied with advantage to 

 the sides of the chest. 



Where the cough is troublesome after the abatement of the 

 acute symptoms, a draught of camphor and hyoscyamus, with 

 a small dose of morphia, may be administered twice daily. 



In the later stages, if there be much debility, vegetable 

 and mineral tonics, as, for instance, sulphate and carbonate 

 of iron, quinine, nux vomica, and gentian, are indicated, and 

 if there be still much cough, camphor may be added. 



Chronic Bronchitis. — Chronic bronchitis is met with in 

 the horse either as a sequel of the acute form or as an 

 independent disease. 



It differs from the acute form in its slower progress, and 

 in its symptoms being less severe, and is characterized by 

 a persistent hard sonorous cough, and by the absence of 

 febrile manifestations, and, moreover, the matter expec- 

 torated is rarely of that viscid cellular nature of acute 

 bronchitis. 



The sounds heard on listening to the chest are somewhat 

 similar to those of the former, and the respiration is almost 

 invariably embarrassed, especially when the horse is under- 

 going any severe exertion. 



In some instances an attack of acute bronchitis may 

 supervene on the chronic disease from very slight causes. 



Chronic bronchitis seems to be in a great measure due to 



