_Treatment._ The main object should be prevention, to be secured by protecting the stock against contact with septic mud, and especially such as is near the freezing point and intermixed with such sharp stones and pebbles as would wound the surface and open channels for infection. When infection has taken place we should seek to limit it by lotions of an antiseptic character. Bandages soaked in a solution of hyposulphite of sodium, 1 dr. to the ounce will often succeed. A more potent application is iodized phenol, prepared as follows: tincture of iodine 2 drs., carbolic acid crystals 4 drs., glycerine 1 oz., alcohol 1 oz., water 8 ozs. When applied on a bandage this may be diluted with water to make 1 pint. For circumscribed application to forming sores the undiluted iodized phenol, made of one part each of iodine and carbolic acid crystals, may be applied twice a day with a glass rod. Other favorite applications are a lotion of lead and laudanum; a saturated solution of boric acid; ninety-five per cent. alcohol; a mixture of creolin 1 part, iodoform 4 parts, and lanolin 10 parts; ichthyol and collodion; ichthyol and vaseline; or iodol, iodoform, salicylic acid or resorcin as dusting powders. Internally, tincture of muriate of iron 3 drms. every three hours helps to keep the affection in check. GANGRENOUS INFECTION OF THE CORONET. HORSE. POTCHETCHOUI. Seen on rich, damp lands. Symptoms: lameness, small areas of congestion, erection of hairs, vesiculation, pustulation, gangrene as deep as tendons, depilation, desquamation, fistulæ, slough of hoof, early fever, impaired appetite, recovery in 14 to 21 days in most cases. Staphylococcus and streptococcus. Prevention: segregation, different attendants, avoidance of infecting land while damp, smear limbs with antiseptics. Treatment: 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 tendons, and forming large sores, one to two inches in diameter and discharging an abundant yellow, fœtid pus. The adjacent skin takes on a yellow tint and sheds its hair and epidermis. The disease may extend into the interphalangean joints or under the hoof, leading to offensive fistulæ or evulsion of the hoof. If it extends to the higher parts of the limb it becomes less destructive.