Diseases of the Respiratory Organs 239 



is often associated with pneumonia, hence the term 

 pleuro-pneumonia probably expresses the true con- 

 dition of affairs better than that expressed by 

 pneumonia or by pleurisy. Most lung inflamma- 

 tions, at any rate such as are associated with dis- 

 temper, begin as catarrhal bronchitis, i.e., inflamma- 

 tion of the bronchial tubes, which is liable to extend 

 into the smaller air tubes, and finally into the alveoh 

 or air spaces of the lungs, producing catarrhal 

 pneumonia. It is quite possible that this form of 

 pneumonia is set up by micro-organisms — either 

 micrococci or bacilli — at anyrate bacteria of some 

 kind. 



Symptoms. — When a hound puppy has distemper 

 it is needful to carefully watch it for the onset of 

 lung trouble, though doubtless such does exist in 

 the majority of cases of distemper, yet it may be so 

 slight as to escape detection. In its development 

 it is of a very insidious nature, but speedy in its 

 termination, and unless prompt measures are em- 

 ployed the chances of successful treatment — though 

 not very hopeful at the best — are small. In addition 

 to the ordinary catarrhal signs, prostration, etc., 

 the bronchitis is plainly marked, and the coarse 

 rales characteristic of bronchitis implicating the 

 larger air tubes give place to sounds of a more 

 wheezy and catching character, as though the dog 

 was going to be suffocated. The repeated coughing 



