BLISTERS. 207 



of each two ounces. 

 Barbadoes tar, one ounce. 

 Oil of rosemary, two drams. 

 Cantharides, powdered, one ounce. — 



Mix. 

 No. 3. Common tar, four ounces. 

 Vitriolic acid, three drams. 

 Mix carefully, previously melting the tar. 

 Oil of turpentine, half an ounce. 

 Hog's lard, two ounces. 

 Cantharides, powdered, one ounce 



and a half. — Mix. 



STRONGEST BLISTER. 



No. i. Strong mercurial ointment, four 



ounces. 

 Oil of origanum, half an ounce. 

 Finely powdered euphorbium, three 



drams. 

 Powdered cantharides, half an ouiice 



Mix. 

 No. 2. Strong mercurial ointment, two ounces. 

 Oil of origanum, two drams. 

 Sublimate finely powdered, two 



drams. 

 Cantharides powdered, six drams* 



Mix. 



