Rabies in Dogs. 



477 



attacks of suffocation and even a rabies paroxysm by reflex 

 action from the mucous membrane of the mouth and throat. 

 Therefore, animals thus affected do not touch food or water 

 at all. In rare cases, the mere offer of water is sufficient to 

 cause an attack (hence the term hydrophobia), which is only 

 the result of the difficulty in swallowing, and, on the whole, is 

 only observed in a portion of the cases. 



At this stage, salivation increases, partly because of the 

 more abundant secretion of saliva, and partly 'owing to the 

 existing difficulties in swallowing. Difficulty in defecation and 

 Urination is also frequently observed. 



'Fig. 76. Rabies. The same dog as in Fig. 75. 



As an extraordinary symptom, Nicolas observed spasmodic move- 

 ments at this stage (pushing forward and moving in circles) in 3 dogs, 

 and also in a goat that had been infected intraocularly. 



The stage of irritation generally lasts 3 to 4 days and 

 is then followed by the paralytic stage (stadium paralyseos or 

 depressionis). The attacks of rage become less violent arid 

 also less frequent, but in the meantime symptoms of insensi- 

 bility and dullness may appear. As a result the symptoms 

 of an already existing paralysis become more conspicuous, and 

 other parts of -the body may also become paralyzed. 



As the changes in the medulla and cranial nerves already 



