164 THE CONTAGIOUS TYPHUS 



them from place to place ; and this atten- 

 tion is the more essential, because in the 

 transit, the cavities "being deprived of their 

 contractile power, let flow the pestilential 

 liquids which they contain, thereby infect- 

 ing the carriages and public roads. The 

 urgent necessity there is to inhume at once 

 these dead bodies, the most active agents in 

 diffusing the contagion, is equally the drift 

 of this observation. 



The deceased animal, as a subject of anatomy, 

 enables us to certify the seat of the emphyse- 

 matous tumours, and to see that they are really 

 due to the air which insinuates itself into the 

 cellular tissue, and which, receding from the 

 pressure of the fingers between the cells, pro- 

 duced the crackling sound we noticed above. 

 This penetration of the air is, moreover, a far 

 more general effect than was supposed. 



It is ascertained, likewise, from the examina- 

 tion of these subjects, that the round, fluc- 

 tuating, and smaller tumours, are indeed 

 purulent gatherings, which occasionally find 

 a passage into the layers and interstices of the 

 muscles. 



The muscular flesh is usually flabby, blood- 



