72 THE FARMER'S VETERINARIAN 



splint or ringbone is just beginning. In preparing, 

 use one part of the mercury to nine parts of vase- 

 line or lard. Remember, it is a poison, and must 

 be carefully handled, as is true of some other prep- 

 arations of mercury. 



CAMPHOR 



The camphor of commerce is in the form of a gum 

 obtained from a tree by boiling and evaporation. 

 It is used in mixtures for coughs, sore throat, and 

 heaves. It is good also for colic and diarrhoea and 

 assists in lessening pain. It should be given in 

 water. 



Dose: For horses, 2 to 4 teaspoonfuls ; cattle, 

 4 to 5 teaspoonfuls ; pigs and sheep, 2 teaspoonfuls. 



CANTHARIDES OR SPANISH FLY 



r 



This is in the form of powder, and is an irritant. 

 For use it should be thoroughly mixed with lard or 

 vaseline. One teaspoonful of the cantharides to 4 

 tablespoonfuls of lard or vaseline. When so pre- 

 pared it is excellent as a blister. It can be applied 

 for sweat thickenings or lumps on any part of the 

 body that is not on the bone. It should not be 

 used on curbs or tumors and is not used internally. 



CARBOLIC ACID 



This is got from coal tar and petroleum. When 

 full strength and pure it is in the form of crystals, 

 but is generally bought as a liquid. It is a disinfectant 

 and an antiseptic, and while used internally for 

 some purposes, is largely used internally in washes 

 and solutions. Its principal use is in bathing 



