48 MATERIA MEDICA. 



bleeding on eveiy occasion, or when a horse 

 is merely affected with a catarrh or cold ; it 

 is only proper in cases of real fevers, de- 

 pending either upon internal inflammation^ 

 upon an undue determination ofblood to the 

 interior parts of the body, or upon general 

 inflammation. The disease termed staggers, 

 must be included. 



BLISTERS. This term is applied to me- 

 dicines that inflame the skin, and cause 

 watery bkdders to rise upon its surface ; the 

 most useful of this kind is the cantbaris or 

 Spanish fly, which forms the principal in- 

 gredient in all our blisters. There are many 

 others, however, which are generally mixed 

 with it, as auxiliaries, among these are hele- 

 bore, eiiphorbium, tnrpentine, &c. (See 

 Pharm. article Bl'^sters.) 



Blisters are of great use in veterinary 

 medicine, they are extremely efllicacious in 

 dispersing callous swellings, the conse- 

 quence o{ strains, bruises, &c. 



In inflammation of parts remote from the 

 surface, they are of grea' ser\'ice. When the 

 internal parts of the foot are inflamed, re- 

 lief is generally obtained by blistering the 

 pastern, provided the subordinate or auxi- 



