512 Veterinayy Medicine. 



and any internal disease mnst be attended to. For stocking, use 

 careful bandaging, liand-rubbing and exercise. 



With the formation of the deeper fissures the .same antiseptic 

 agents may be employed, or salol, iodoform, glutol, aristol, or 

 some tincture of iodine, or iodide of starch may be used. A weak 

 solution of copper sulpliate has often an excellent effect. The 

 measures advised below iox grease will usually apply in this con- 

 dition. 



SEBORRHCEA OF THE DIGITAL REGION: DIGITAL 

 IMPETIGO, GREASE: STREPTOCOCCIC DERMA- 

 TITIS IN HORSES. 



A sequel of er3'thema or cracked heels. Causes : constitutional predis- 

 position in lymphatic draught horses, rare in ass and mule, anatomical con- 

 ditions, wet damp regions, digestive disorder, over-feeding and lack of 

 exercise, diseases of liver or kidney, change to stable life, cold water, 

 slush, mud, salted snow, steaming manure, urine in mares, infection, 

 streptococcus pyogenes. Symptoms : swelling, heat, and tenderness of 

 pastern hollow, itching, hairs erect, unctuous exudate, vesicles, excoria- 

 tions, discharge opaque, grayish, sticky, foetid, chaps, knuckling, resting 

 on toe, kicking : in severe cases discharge purulent, more opaque, sloughs, 

 excessive granulations, " grapes, " extensions forward, upward, downward, 

 canker, quittor, sand crack, etc. Lesions : first, congestion of derma, hair 

 follicles full, hairs loose, connective tissue infiltrated, or thickened, liga- 

 ments and bones involved, grapes in superposed clusters pediculated. Diag- 

 nosis : from horse-pox. Treatment : remove causes, secure cleanliness, 

 laxative, diuretics, moderate grain ration, or tonic regimen ; locally, sooth- 

 ing antiphlogistic, antiseptic treatment, lead, zinc, phenol, creolin, lysol ; 

 when advanced, antiseptic dusting powders, calomel, salicylic acid, iodine, 

 zinc oxide, salol, or solutions, zinc chloride, tar. Value of changes. For 

 "grapes" actual cautery, excision, ligature. 



This may develop as an advanced condition of the erythema or 

 cracked heels already described. Yet it is so distinctive in its 

 habit of profu.se secretion, the eruption of vesicles or pustules and 

 the abundant, foetid sebaceous discharge that it deserves a special 

 consideration. 



Causes. Sjniething depends on constitutional predisposition. 

 This is preeminently a disease of the heav}', lymphatic, draught 



