148 THE CONTAGIOUS TYPHUS 



and transfer their evolutions either to the 

 nervous centres or to the respiratory mucous 

 membrane, or to that of the digestive channels, 

 in the inflammatory and febrile form of the 

 contagious typhus. Such at least is what we 

 observe in the typhus of 1865 in England. 



The functional derangements, in truth, sub- 

 ordinate to and depending on the predisposi- 

 tions exhibited by the cattle, are far from being 

 the same in all. In some, the nervous derange- 

 ments predominate; in others, it is those of 

 the respiratory, and in others, it is those of the 

 digestive channels. 



As in this period of irritation the nervous 

 centres are more particularly affected, the 

 animal suffers cerebral and rickety pains, a 

 constant cephalalgia, which provokes vague 

 anxiety; he is sometimes cheerful, sometimes 

 wild and furious ; he clenches his teeth and 

 yawns, the muscles of his face spasmodically 

 contract, the spine feels very sensitive when 

 pressed, a burning and insatiable thirst comes 

 on, the breathing is hurried, and the intestinal 

 evacuations are suspended. 



In this form the toxaemia appears to con- 



