45o INFLAMMATIONS. 



LARYNGITIS AND BRONCHOCELE. 



Laryngitis consists in inflammation of the top of the wind-pipe, 

 where there is a very narrow passage for the air, and consequently 

 where a slight extra contraction caused by swelling is necessarily 

 fatal. When acute it is a very dangerous disease, and is charac- 

 terised by quick and laborious breathing, accompanied by a snor- 

 ing kind of noise. There is also a hoarse and evidently painful 

 cough. Pulse quick and sharp, and some degree of fever. The 

 treatment must be active, or it will be of no use. Large bleed- 

 ings, followed by a calomel purge (12) and the fever powder (50), 

 will be necessary ; but no time should be lost in calling in skilful 

 aid, if the life of the dog is of any consequence. 



Chronic laryngitis attacks the same part, but comes on in- 

 sidiously, and is shown chiefly in a hoarse cough and stridulous 

 bark. It is best treated by a seton in the throat, together with 

 low diet and the alterative pill (1). 



Bronchocele is known by an enlargement (often to the size of 

 the fist) of the thyroid body placed just on each side of the wind- 

 pipe. If this does not press upon the air-passage, there is no in- 

 convenience ; but in course of time it has that ill effect, and the 

 dog becomes wheezy and short-winded. It is chiefly seen in 

 house pets, and may be relieved by the internal use of iodine (3), 

 given for weeks together. 



INFLAMMATION OF THE LUNGS. 



The organs of respiration consist of an external serous and an 

 internal mucous membrane, united together by a cellular tissue, 



