170 THE CONTAGIOUS TYPHUS 



or sores present different appearances. Deve- 

 loped to the utmost in some cases, so much so 

 as to exhibit ulcerations at the root of the 

 tongue as well as in the intestines, and to be 

 in a manner the excess of the injuries which 

 are seen in typhoid fever, they are in other 

 cases scarcely perceptible, and sometimes en- 

 tirely absent, when the animal is struck down 

 in the third or fourth period, that is to say, 

 when the exanthematic or pustular state has 

 had time to develope itself on the digestive 

 channels. One of these animals seized by Mr. 

 Tegg at the Camden Town market, was in such 

 a state of exhaustion that he could not be 

 driven to the slaughter-house, only two hun- 

 dred yards distant ; they were forced to fell 

 him on the spot midway, in order to have him 

 conveyed to the place of dissection. We only 

 detected partial injections on the digestive 

 tube of this beast. The pulmonary emphy- 

 sema which had caused this animal's death 

 was developed in the highest degree. He 

 was opened at the request of M. Bouley, of 

 Alfort, 



Apparatus of Eespiration. Here, again, the 



