Gangrenous Affection of the Coronet — Horse. 109 



blue (pj'oktanin) (i:rooo) may be employed to good purpose. 

 A large number of other antiseptics may be substituted, care be- 

 ing taken that they are not dangerous either as poisons or as 

 deeply penetrating caustics. Creolin, lysol, creosote, cresyl, 

 tincture of iodine, solution of silver nitrate, or zinc chloride, may 

 be used ; or, when a more soothing agent is demanded, tar, crude 

 turpentine, iodoform or tannoform may be substituted. In all 

 cases it is essential to protect the feet against dust and above all 

 mud. Keep on a wooden or other dry clean surface. 



When a hyperplasia (fungus growth) has formed at any point 

 it must be removed by knife or curette or by the thermo cautery, 

 any bleeding being checked by the latter, by iron cfiloride, or 

 adrenalin, or by a compression bandage, and the antiseptic treat- 

 ment must be maintained as above directed. 



Open sheaths or joints may demand a careful use of antiseptic 

 lotions (cupric sulphate, etc. ) and diseased bones may render am- 

 putation of a digit imperative. 



GANGRENOUS INFECTION OF THE CORONET- 

 HORSE. POTCHETCHOUI. 



Seen on rich, damp lands. Symptoms : lameness, small areas of conges 

 tion, erection of hairs, vesiculatiou, pustulation, gangrene as deep as ten- 

 dons, depilation, desquamation, fistulae, slough of hoof, early fever, im- 

 paired appetite, recovery in 14 to 21 days in most cases. Staphylococcus 

 and streptococcus. Prevention : segregation, different atleudants, avoid- 

 ance of infecting land while damp, smear limbs with antiseptics. Treat- 

 ment : antiseptic bandages. 



Under this name Sotsevich describes an infectious disease of the 

 horse, which prevails in the Don province, and especially on rich, 

 low, damp lands. Before the appearance of any local lesion, the 

 horse goes very lame on one limb. Afterward there appears, 

 usually on the coronet or pastern, an area on which the hairs 

 stand erect, with elevation of the epidermis and the formation of 

 vesicles as large as barley corns, filled with a yellowish white 

 liquid and later with pus. Gangrene follows, extending from the 

 skin to the subcutaneous connective tissue, aponeurosis and ten- 

 dons, and forming large sores, one to two inches in diameter and 

 discharging an abundant yellow, foetid pus. The adjacent skin 



