Various Lamenesses. 205 



bolic acid : one drachm of the acid to an ounce of water ; or, 



the following : — 



No. 218.. Sulphate of zinc, 



Sulphate of copper, of each 3 drachms. 



Vinegar, ^ pint. 



Mix, and use with a syringe.. 



SAND CSACE. 



Definition. — A crack or fissure in the wall of the hoof, be- 

 ginning at the coronet, and generally found in the inner quar- 

 ters of the fore and the toes of the hind feet. 



Causes. — There is usually a defective quality of horny sub- 

 stance secreted in these cases. It is too brittle, and on bad 

 shoeing, or rapid traveling over hard roads, the wall of the 

 hoof splits. Sometimes this happens suddenly, but generally 

 the crack is of slow growth, beginning at the coronet and run- 

 ning downward. 



Symptoms. — The appearance of the crack is characteristic; 

 when the animal bears his weight on the foot it opens, and 

 when he lifts the foot it closes. Thus sand and dirt easily 

 effect a lodgment, and working into the sensitive parts, give 

 severe pain, and cause marked lameness. Sometimes irrita- 

 tive fever and local suppuration ensue. 



Treatment, — When there is much inflammation, the shoe 

 shoul,d be removed, the edges of the crack pared, the fissure 

 cleansed, and hot fomentations and poultices applied. Caus- 

 tic should not be applied, even if there is a growth of proud 

 flesh, according to Prof, Williams, on account of the danger 

 of exciting further irritation. 



When the inflammatory symptoms have abated, a bar shoe 

 should be applied to the foot, and the edges of thp crack be 

 brought together and clasped, by an instrument made for the 

 purpose, which can be had of any surgical instrument maker. 



Two or three of these may be placed up and down the 



