DISEASES OP THE RESPIRATORY ORGANS. 221 



disease, except that the fever, pain, etc., are not so 

 marked. 



Treatment is to be directed especially to the removal 

 of the effused fluid, either by natural absorption or " tap- 

 ping," and the greatest attention to the general health of 

 the animal. 



Bronchitis. — This disease is an inflammation of the 

 mucous membrane of the bronchial tubes. 



When the smallest tubes are involved the affection is 

 termed capillary hronchitls, most common in very young, 

 very old, and debilitated subjects, and so is by far the most 

 dangerous form. 



Pathology. — There are swelling and dryness of the lin- 

 ing membrane of the tul)es, followed by a mucous dis- 

 charge in excess, which is apt to become to a greater or 

 less extent purulent. 



The cells lining the membrane die, are thrown off and 

 expectorated in the case of man. As dogs do not properly 

 expectorate or cough to much purpose, they are at a great 

 disadvantage. However, they frequently vomit when 

 coughing, which tends to expel the excessive and altered 

 discharge, and furnishes a hint for treatment. 



Prognosis. — Favorable if not associated with gangrene 

 or death of lung tissue, abscess, dilatation of the tubes, 

 and if the strength of the animal be good. 



Symptoms. — More or less cough, moist sounds on aus- 

 cultation, with sympathetic congestion and catarrh of the 

 eyes and nose. 



Treatment. — At the outset an emetic of twenty grains 

 of sulphate of zinc, which, if not effective, in a few min- 

 utes may be followed by two to four drachms of wine of 



