AND PHARMACOP(EIA. 441 



applying a poultice to it, and giving a dose of physic. When 

 the lungs are inflamed, blistering the sides freely is an excellent 

 remedy, especially when we feel doubtful as to the propriety of 

 further bleeding. 



Blistering is employed also for curbs, vnndgalls, sjjavins, &c. 



Broken knees, unless skilfully treated, frequently leave a cal- 

 lous swelling on the part ; for the removal of which blistering is 

 employed. When blisters are properly made, and free from any 

 caustic ingredients, such as sublimate, vitriolic acid, &c., there is 

 no danger of destroying the hair ; and if the first blistering does 

 not prove effectual, it may be repeated until the desired effect is 

 produced. 



Before a blister Is applied, the hair should be closely cut ofi", or 

 even shaved ofi", if the situation of the diseased part will admit of its 

 being done without wounding the skin ; but good scissors or shears, 

 if skilfully used, will answer the purpose sufficiently. If the skin 

 is scurvy it maybe washed with flannel, soap, and warm water, and 

 be made perfectly dry before the blister is applied. Blisters are 

 generally employed in the form of ointment, but on some occa- 

 sions they are prefen-ed of a thinner consistence, or in the form 

 of liniment, or even still thinner or more fluid, and are then 

 named liquid blisters. Formulae, or receipts for each of these, 

 are subjoined. Though a variety of ingredients are generally 

 used in blisters, I believe that the Cantharis, or Spanish fly, is 

 the best; and if not injured by long keeping, or adulterated, is 

 the only blistering ingredient required for common purposes. 

 Spanish flies should be finely powdered, and used while fresh. 

 See Spanish Flies. 



BLISTER OINTMENT. 



No. 1. Hoci;'s lard 4 ozs. 



Oil of turpentine 1 oz. 



Powdered cantharides 1 oz. — Mix. 



Melt the lard by a gradual heat ; remove it from the fire, and 

 stir in the turpentine ; then add the cantharides, and continue 

 stirrino; until it it cold. 



No. 2. Hog's lard, or palm oil 12 ozs. 



Oil of Bays 4 ozs. 



Oil of turpentine 2 ozs. 



Powdered camphor 2 ozs. 



Powdered cantharides 4 ozs. 



The first tw^o ingredients to be melted, then add the turpen- 

 tine, and afterwards the camphor and cantharides, and continue 

 stirring till cold. 



This will be found the best blister for general purposes. The 

 camphor, as observed by Mr. Morton, generally lessens the irrita- 



