VETERINARY MATERIA MEDIC A. 621 



No. 1. — BUster for general Use. 



Powdered cantharides f^ne pnund. 



Lard eight pounds. 



The liquid blister is made by substituting eight pints of 

 oil for the eight pounds of lard, and allowing the flies to 

 digest for a fortnight, or boiling them in a water bath. 

 A^pound of camphor is a good addition ; it does not 

 lessen the action of the bhster, but diminishes its irrita- 

 tion. 



No. 2. — A powerful Blister. 



Spanish flies o»e pound- 



Lard tl'^'e^' pounds. 



j^ggin two pounds. 



Oil of turpentine one pound. 



Melt the resin with the lard, after which add the tur- 

 pentine. When beginning to cool, throw in the pow- 

 dered flies. 



No 3 —A Mercurial Blister for Splints, Sjjarins, and Pdnghones, which may he used 

 irhere dependence is placed on the action of Mercurials and Blisters, but which there is 

 reason to think are of but little assistance in the reduction oj these exostoses, paHicularhj ij 

 of long standing. 



Of either of the former four ounces. 



Corrosive sublimate, powdered finely a scruple. 



No. 4.— Liquid BUster, weak ; sometimes called Sweating Blister. 



Spanish flies, in gross powder half a pound. 



Olive oil . .- t'""ee quarts. 



Steep the flies in the oil three weeks; strain off, and 

 bottle for use. 



No. 5. — Liquid Blister, very mild. 



Of the above one pint. 



Olive oil ^ Pi"*^ '^^^ ^ "^'*- 



The farriers' sweating Ulster is only a strong stimulant : 

 it occasions heat and swelling, without excoriation or 

 loss of hair ; consequently it is a very convenient appli- 

 cation, when it is an object to avoid a temporary blemish, 

 and when the case is not of a very desperate description. 

 But there are also instances in which it is to be preferred 

 to an actual bhster, as in strains, where some remains of 

 heat and inflammation are present, but without activity : 

 in such cases the sw^eating blister is very often efficacious. 

 The mode of application is to rub it in of sufficient 

 strength to irritate in a mild degree only ; repeating it 

 every day, until considerable swelling is occasioned, when 



