BRONCHITIS. 



Relation to other maladies of the air-passages. Horse. Causes, suscepti- 

 bility, heat, cold, sudden changes, thick coat, rebreathed air, on shipboard, 

 in zoological gardens, in close stables, in navies, organic matter in expired 

 air, water vapor in expired air, effect on the air and bacteria. Ingesta in 

 bronchia. Medicinal liquids in bronchia in horses and cattle. Exposed 

 locations. Clipping. Smoke and gaseous irritants. vSymptoms, in mild 

 cases, in severe : fever, cough in dry stage, after secretion, auscultatory 

 sounds, percussion, discharge, vpatery, glairy, frothy, later milky, flocculent, 

 purulent. Convalescence. Capillary and pseudomembranous form. Intensity 

 of symptoms, labored breathing, dyspnoea, violent cough, pinched counte- 

 nance, dark mucosae, perspirations, palpitations, asphyxia. Course, du- 

 ration. Termination, difficult expectoration, blocking of bronchia, pneu- 

 monia, bowel susceptibility, skin congestion, laminitis. Chronic condition. 

 Lesions, congestion and contents of bronchia, soft, thick, friable mucosa, 

 absence of vascular ramification, tenacious mucus, false membranes. Col- 

 lapse, atelectasis, spleuisation, emphysema, bronchiectasis. Treatment, 

 in mild cases, in severe, hygienic, steaming, sulphur dioxide, derivatives, 

 guarded laxative, neutral salts, calmatives, expectorants, alkalies, stimu- 

 lant, oxygen, peroxide of hydrogen, iodide of potassium. Diet. In ad- 

 vanced stages tonics. 



Defi7iition. Inflammation of the mucous membrane which lines 

 the bronchia. It is the counterpart of coryza and laryngitis, be- 

 ing but the inflammation of another portion of the same mucous 

 membrane which hues the whole respiratory track. That portion of 

 this mucous membrane which lines the trachea is rarely or never 

 the exclusive .seat of inflammation, so that in case of its being 

 implicated we do not speak of the case as one of tracheitis but as 

 lary7igitis or bronchitis, according as the throat or bronchia form 

 the seat of active inflammatory action. 



The bronchial mucous membrane is often inflamed in influenza, 

 strangles, contagious pleuro-pneumonia of cattle, distemper in 

 dogs, and parasitic diseases of the lungs, but the following re- 

 marks will be confined to the .simple inflammatory affection. It 

 appears as an acute 2i\\^ a chronic affection. 



HORSE. ACUTE BRONCHITIS. 



This is more frequent in the horse than in other animals, and 

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