VILLITIS. 371 



slices, either barred or open ; cold applications to the coronets ; 

 and when the heat and tenderness have subsided, mild blisters. 

 To reduce any constitutional disturbance, and the local inflam- 

 mation, purgatives may be given occasionally. If the animal 

 does not become sound with this treatment, he nmst be allowed 

 a run at grass. 



CARBUNCLE OF THE CORONARY BAND,* 



Called Furunculus by Mr M'Eachran, Montreal, attributed to 

 frost-hites by others, consists of an oval or irregular portion of 

 the coronary substance becoming infiltrated with unhealthy 

 lymph, forming at first a hard swelling of variable size, very 

 painful ; sometimes extending all round the coronet ; or appear- 

 ing at other times as several patches or spots of inflammation ; 

 accompanied by great pain, lameness, and a high degree of 

 febrile disturbance. After a few days suppuration sets in, 

 most commonly at several points, with ulceration of the soft- 

 ened portions, forming so many apertures or sinuses, which 

 discharge a thin, unhealthy, ichorous pus. The apertures en- 

 large by ulceration or even sloughing of their borders, and by 

 confluence constitute a most formidable looking and unhealthy 

 wound. In aggravated and malignant cases, other inflammatory 

 points appear upon the pastern and fetlock, extending in some 

 instances as high as the knee or hock, causing sloughing of 

 great patches of skin and subcutaneous tissues, exposing the 

 tendons, nerves, blood-vessels, and even the cavities of the 

 joints, and producing so high a state of fever and suffering as to 

 destroy the animal's life. 



Mr. Robinson of Greenock describes some of his cases to have 

 presented the following symptoms : — Lameness and febrile dis- 

 turbance. On examining the limb, the integuments, in some 

 part between the knee or hock and the foot, will be found 

 gangrenous, with a dew upon the surface ; sinking on pressure ; 

 having, in fact, a doughy feel. In a day or two a line of demar- 

 cation makes it appearance, and separation of the gangrenous 

 part takes place. Wlien not involving the coronary substance, 

 Mr. Eobinson says that the result was always favourable. 



* Carbuncle of the coronary band is a disease similar to malignant onychia of 

 the human being. 



