202 



In case of injury to the bone, we use pyroligneous acid, 

 to be thrown into the wound by means of a small syringe. 

 If extensive disease of the bone sets in, the services of a 

 veterinary surgeon will be required. A very profuse or 

 unhealthy discharge from a punctured wound must be met 

 by constitutional remedies. Sulphur and sassafras, to the 

 amount of half an ounce each, every other day, to the 

 amount of three or four doses, will arrest the morbid phe- 

 nomenon. The local remedy in all cases of this kind is, 

 diluted acetic or pyroligneous acid. 



Ckacked Heels. — Horses that are so neglected that 

 thoy have a tendency to inflammation of the legs, and feet, 

 are often troubled with what is known as cracked heeh^ 

 which is a very troublesome affection, and causes a great 

 loss of useful service, in the case of animals otherwise well 

 cared for. 



Cracked heels may be cured on the same general 

 principles as are employed in the case of scratches or grease, 

 which is thus described by Percival : 



The etiology of grease throws considerable light upon 

 its veritable nature. Horses which are at pasture or in 

 straw yards — in situations, in fact, where heat and cold are 

 not naturally, and cannot be artificially, made suddenly 

 operative upon the heels — rarely have grease. Those that 

 have grease in stables are mostly coach and cart-horses, 

 with thick, fleshy heels and white legs ; which are subject 

 to get their heels wet, and do not commonly have such 

 pains bestowed upon them, to dry the legs, as hackneys, 

 hunters, and racers have. Indeed, among the latter, grease 

 is a very uncommon disease. Such horses also stand in 

 stables hot and filthy from dung and urine, the very ex- 

 halations from the litter of which proves an additional 

 excitement. 



Grease formerly made great ravages in the English cav- 



