DR. LEGEAR'S STOCK BOOK. 241 



able animal we wouldn't advise treatment,, as it will take more 

 time and expense than the animal is worth, and then you are 

 liable to fail in your efforts. If treatment is advisable, cut away 

 till diseased parts you can with a sharp knife, and cauterize it 

 with a hot iron to stop the blood and destroy what remaining 

 portions of the disease you can. Keep the foot as clean as pos- 

 sible and apply equal parts of powdered charcoal and calomel 

 twice per day. A weak solution of carbolic acid may be bene- 

 ficial. Give in the feed 2 tablespoonsful of Fowler's Solution of 

 Arsenic once a day for two or three weeks. 



SAND-CKACK. 



A sand-crack is a fissure or crack in the wall of the hoof. 

 These cracks may exist in any part of the wall, and receive vari- 

 ous names,, according to their loca- 

 tion. Thus a crack in the front part 

 of the hoof is called a centre-crack 

 or toe crack, and one at the quarter 

 a quarter-crack. (Fig. 52.) The 

 crack may extend part way or all the 

 way from top to bottom. Some 

 cracks begin at the top and extend 

 downward, while others begin at 

 the bottom and work up. The 



Fig. 52. Quarter- Crack. 



former are much more severe. A 



crack beginning at the bottom and extending up a short distance 

 seldom if ever causes any trouble. 



Causes. Horses having thin, brittle hoofs, and being driven 

 o\i hard roads in dry weather, are liable to have sand-cracks. 

 They are very common among trotting and running horses by 

 being worked so fast on hard tracks. Shoeing with high heels 

 and toe calks may cause sand-cracks. Horses standing on hard, 



