204 Diseases of the Horse. 



ful caustics, as nitrate of silver, sulphuric acid and tar 



(No. 216), and the like. An efficient caustic wash, is: — 



No. 217. Chloride of zinc, 40 grains. 



Water, 1 oz. 



This is known as De Morgan's solution, from the eminent 

 London surgeon of that name, and is unsurpassed as a wash 

 for fistulous and foul wounds and ulcers, which cannot well 

 be reached with the solid pencil of nitrate of silver, or 

 chloride of zinc. The solution may be syringed freely on 

 the part. 



PTJIJCTURED WOUNDS OF THE FEET— PRICKINGS, GATHERED 



NAILS. 



Most injuries to the feet, of this class, are caused by care- 

 lessness in [shoeing ; though, occasionally, a horse treads on 

 an upright nail, or a thorn, and brings about a lameness due 

 to its entrance into the sensitive portion of the hoof. 



Symptoms, — The distinguishing marks of lameness from 

 this cause are its sudden onset, when the horse is in health, 

 without fever or other disease, and the intense pain. Should 

 the accident not receive attention, it may lead to festering 

 vrithin the hoof, disease of the bones of the foot, sympathetic 

 fever, and lockjaw. 



Treatment. — The shoe should be gently removed, the 

 foot w^ashed and pared, and moderate pressure against the 

 sole and wall of the hoof, all around, until some tender spot 

 is found. This is then to be scraped and pared, so as to re- 

 move any foreign body, and to give free outlet to any pus 

 which may have formed; and the foot then enveloped 

 in a large and warm poultice. After a day or two, if the 

 healing is delayed by proud flesh, or the continued discharge 

 of an unhealthy and ill-smelling matter, the wound should 

 be well syringed, several times daily, with a solution of car- 



