DISEASES FROM FAULTY CONFORMATION 199 



severity, the formation of pus may be expected, and it is 

 then time for the paring to be carried further, until the 

 question ' pus or no pus ? ' is definitely settled. 



Should the moisture be due simply to the presence of 

 the inflammatory exudate, then poulticing alone will 

 have the desired effect, and the pain will be lessened. 

 With the decrease in pain the poulticing may be dis- 

 continued, and the horn over the seat of the injury 

 dressed with some antiseptic and hardening solution. 

 Sulphate of zinc, a mixture of sulphate of zinc and lead 

 acetate, sulphate of copper, or the mixture known as 

 Yillate's solution,* may either of them be used. Suitably 

 shod, and with a leather sole for preference, the animal 

 may then again be put to work. 



When dealing with suppurating corn, then, a consider- 

 able paring away of the horn of the sole becomes a matter 

 of necessity. The freest possible exit should be given to 

 the pus, and this even when an opening has already 

 occurred at the coronet. Unless this is done, and done 

 promptly, the putrescent matter still contained within the 

 hoof will make further inroads upon the soft structures 

 therein, and later upon the ligaments, and even bone itself. 



Having given drainage to the lesion by the dependent 

 orifice in the sole, poulticing should again be resorted to, 

 and maintained for at least three or four days. The 

 poulticing may then be discontinued, and the openings in 

 the sole injected with a weak solution of Tuson's spts. 

 hydrarg. perchlor., a 1 in 20 solution of carbolic acid, a 

 solution of copper sulphate, with Yillate's solution, or with 

 any other combined antiseptic and astringent. The success 

 of the treatment is soon seen in the cessation of pain and 



* The composition of the escarotic liquid bearing his name 

 was published by M. Villate in 1829 as under: 



Subacetate of lead liquid 128 grammes 



Sulphate of zinc 64 grammes 



Sulphate of copper 64 grammes 



Acetic acid */> litre 



Dissolve the salts in the acid, add little by little the subacetate 

 of lead, and well shake the mixture. 



