196 ULCEIIS. 



Causes ef Internal Ulcers. 



in general, leave a stiffness, which may be re- 

 moved by applying the blistering oils (No. 133, 

 p. S02), or the mild astringent blistering oint- 

 ment (No. 11 1, p. 167). Either of these blisters 

 will be found sufficient, and must be applied as 

 above directed. 



CHAP. XXXV. 



OF ULCERS. 



It may be needless here to enter into a large 

 description of ulcers ; we shall, therefore, only 

 notice the difference between internal and exter- 

 nal ulcers. The first proceeds from a deprivation 

 of the nutritious juices, which are hindered from 

 flowing to the extremity of the vessels : in which 

 case gentle purges must be given, and afterwards 

 alterative medicines, such as the purge (No. 4, 



