DISEASES OF THE BRONCHI. 149 



thickening of the walls of the small bronchial tubes, narrow- 

 ing and constricting their liimina. 



In many instances this disease causes gradual loss of 

 flesh, diminution of appetite, and general debility. When 

 it occurs as an independent affection it is generally 

 gradual in its onset and development, and of a very persis- 

 tent nature when once established. 



Treatment. — The diet should be liberal and nutritious, 

 Rest is not necessary, though severe exertion should be 

 prohibited. The remedies recommended in the acute form 

 may be with advantage tried in the more persistent and 

 chronic form of the malady. 

 V Camphor, squills, hyoscyamus, digitalis, morphia, extract 

 of belladonna, and hydrocyanic acid are recommended, and 

 should be followed up by the administration of mineral or 

 vegetable tonics or both. Among the latter, nux vomica, 

 quinine, iron, and arsenic are well worthy of trial. 



DISEASES OF THE LUNGS. 

 CONGESTION OF THE LUNGS. 



Synonyms. — Pulmonary congestion. Pulmonary apo- 

 plexy. 



Definition. — Is a hypersemic condition of the lungs, de- 

 pendent on engorgement of the pulmonary vessels with blood. 



Etiology and Nature. — Congestion of the lungs is met 

 with in the horse, not only during the progress of many 

 diseases, such as pneumonia, laminitis, traumatic arthritis, 

 enteritis, cardiac affections, and some epizootic fevers, but 

 also as a distinct and independent affection. 



Pulmonary congestion is acute (arterial) or passive 

 (mechanical or venous). 



