CHAP. I.] IRRITATING THE SURFACE. 219 



either operates on the vascular system by ascertain- 

 ing the state of the pulse previously to the applica- 

 tion, and comparing it with the increased action of 

 that barometer whilst the remedy is taking effect. 

 Subsequently, however, it must be confessed, the 

 agitation of the pulse will subside ; and although we 

 seldom find occasion for employing either blister or 

 rowel, yet are we free to allow, that the manner in 

 which inflammation of these organs sometimes ter- 

 minates (namely in soft tumour), seems to invite an 

 early adoption of artificial means to bring about the 

 same ends. The hand-rubbing just recommended 

 effects this to a certain extent ; and if it has been 

 neglected, or lazily performed, then will blistering 

 become necessary to prevent suppuration within. 



As this tumour usually makes its appearance 

 and marks the crises of acute attacks, the practi- 

 tioner may form an estimate of the probable bene- 

 ficial effects of blistering in any case, by comparing 

 and noting the earliest symptoms of any two cases, 

 in one of which the crisis has been subsequently 

 attended with such a superficial tumour spontane- 

 ously, and in the other not so. He will then employ 

 blistering with more reliance on its efficacy than we 

 have found necessary after the hand-rubbing. 



When this remedy is adopted for inflammation 

 of the lungs, employ blistering ointment composed 

 of cantharides and sweet oil, or hogs' lard. 



Blistering Ointment. 



Cantharides, powdered, 5 drachms. 



Hogs' lard, 4 ounces. 



Oil of turpentine, 1 ounce. 

 l2 



