MEDICINES USED FOR THE HORSE. 79 



used for poll-evil or quittor by being poured directly into the fistulous 

 opening. 



It may be used for various affections of the skin by diluting with glyc- 

 erine, and washing off in a short time if used strong. 



Carbolic Acid. This important medicine is obtained from coal tar 

 oil. Its smell resembles that of creosote. 



Uses. It is used for various purposes such as a disinfectant in stables, 

 where animals have distempers, fevers, &c., by washing the stalls, 

 floors and ceilings, with water which contains a small quantity of the 

 acid : also used with gratifying results for unhealthy wounds and sores, 

 by applying a solution of the following strength; Carbolic acid, 1 oz., 

 fresh, soft water 6 pints ; this prevents putrefaction and will cause the 

 wound to be more healthy and to heal sooner. Carbolic acid is also used 

 for destroying wood ticks, lice and all kinds of parasites, and is quite 

 effective in preventing the bot fly from depositing her eggs when those 

 parts which are commonly chosen by the bot fly, are washed with a so- 

 lution double the strength given above. 



Nitric Acid, (called also Aqua Fortis.) This is also a valuable tonic 

 when properly given. It is extremely sour and corrosive, and should 

 be guarded by the same caution as in giving the sulphuric acid. 



Dose. It may be given in doses of 5 to 25 drops, largely diluted with 

 water. 



Sulphuric Acid, (called also oil of Vitriol.) This acid is obtained 

 by burning sulphur, mixed with one eighth of its weight of nitre, over 

 a stratum of water contained in a chamber lined with sheet-lead. 



Uses. Many consider this acid to be preferable to any other of the 

 acids for internal use, in debility of the digestive organs, for general 

 weakness, and as a refrigerant. 



Externally, it is used similarly to muriatic acid. When it is desired 

 to use it as a caustic it should be mixed with dry powdered white vit- 

 riol sufficient to make it of a pasty consistence so it can be confined to 

 the location which it is desired to cauterize. 



