SEROUS SYSTEM. 265 



Q. What indicates the formation of pus in the serous 

 sacs? 



.#. Alteration of the pain from its acuteness; there is a 

 sensation of weight, and the symptomatic constitutional 

 signs of the suppurative process. 



Q. In which serous tissue does gangrene oftenest ap- 

 pear? 



ft. In the peritoneum; but observe that the blackest 

 peritoneum is not always the most gangrenous. 



Q. There is another important and common termina- 

 tion of acute serous inflammation which has not been 

 named. 



t/tf. It is the chronic inflammation. You will recollect 

 that this is very often an original form of disease, as well 

 as a consequence of the acute serous inflammation. 



Q. Is chronic inflammation of the serous membranes 

 habitually extended from one to another? 



,#. Very rarely ; but observe the continuous affections 

 of the mucous membranes. 



Q. What is the character of die pain in chronic inflam- 

 mations of the serous membranes? 



#. It is an obscure, pricking pain. 



Q. What is the most interesting pathological result of 

 this chronic inflammation of the serous membranes? 



*#. Dropsy; the correct pathology of which is, that it 

 is a chronic inflammation of the serous membranes. 



Q. Can you point out a difference in the symptomatic 

 and idiopathic dropsies? 



.#. When dropsy is symptomatic of an organic disease, 

 the cellular tissue is infiltrated; but when idiopathic, it is 

 in the serous cavities alone. 



Q. What fluids are deposited in dropsy? 

 . 34 



