VETERINARY MEDICINES 381 



pecially for the heart and lungs. Diluted with water in 2- 

 ounce doses it is used in colic and for shock. 



Arsenic is a heavy white powder, sparingly soluble in water. 

 Applied to raw surfaces it acts as a caustic. Internally it is 

 used as a tonic especially for horses suffering from chronic digest- 

 ive disorders. The dose for the horse is 1 to 5 grains in the 

 food If Fowler's solution of arsenic is used the dose is 1 to 2 

 ounces three times daily mixed with the feed. 



Bismuth subnitrate is a heavy white powder almost insoluble 

 in water. It is used in combination with salol for scours of 

 calves. For best results it should be given in 2 to 4 dram doses 

 on an empty stomach and at frequent intervals. 



Boracic acid is a fine non-poisonous powder. It is an ideal 

 antiseptic and non-irritating wound dressing. A saturated 

 aqueous solution makes an excellent eye wash. The dry powder 

 is used for dusting on wounds. 



Cantharides is the powdered bodies of Spanish flies. It is for 

 external application only and is used as a blistering agent in 

 combination with vaseline or lard. 



Carbolic acid may be purchased as crystals and put into solu- 

 tion as required. It is one of our best disinfectants and is em- 

 ployed in a 3 to 5 per cent, solution. Even in small amounts it is 

 a powerful poison. In case of poisoning, a stomach pump is 

 immediately used and then undiluted whiskey is given as a 

 stimulant followed by Epsom or Glauber's salts to form insoluble 

 sulphocarbolate. 



Copper sulphate forms as large deep blue crystals. It is 

 fairly soluble in water. Externally it is antiseptic, stimulant, 

 astringent or caustic to raw and mucous surfaces according to the 

 strength applied. Internally it is poisonous unless used in very 

 small doses, but has been employed with some success in combina- 

 tion with iron as a tonic and vermifuge. As a drying application 

 for foot-rot and other diseases of the feet, it gives excellent 

 results. It is less valuable as a disinfectant than is popularly 

 believed. 



Creolin is a brown colored fluid containing a relatively large 

 per cent, of carbolic acid. It is an antiseptic, disinfectant and 

 parasiticide, depending upon the strength employed. It is used 

 in 1 to 10 per cent, solutions in water, 



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