244 Hounds 



utility of medicated steam is to encourage the dis- 

 charge from the respiratory passage. That form 

 of pneumonia supposed to originate from exposure 

 to cold is practically treated upon the same lines. 



Bronchitis 



Bronchitis, or inflammation of the bronchial 

 tubes, is a tolerably common trouble amongst 

 hounds, but when it does occur it is generally associ- 

 ated with distemper, and has been considered when 

 speaking of the previous disease. It may be acute 

 or chronic, but it is commonest in its acute form, 

 being accompanied by a certain amount of febrile 

 disturbance. The inflammation starts into exist- 

 ence in the larger bronchial tubes, and if allowed 

 to run on unchecked has a tendency to extend into 

 the medial and smaller air tubes, possibly ending 

 in catarrhal pneumonia (which see). 



It is customary for veterinarians to speak of 

 bronchitis as being induced by chemical, mechanical, 

 parasitical and specific causes. The chemical result 

 from the inhalation of irritating vapours; the 

 mechanical through the accidental admission of 

 medicine, etc., into the windpipe; and as parasitical 

 when the air tubes are invaded by threadworms — 

 FiliaricB bronchialis canis — worms that correspond 

 to those producing hoose in cattle and sheep, but 

 fortunately for the dog this is a rare cause of 



