=Treatment= consists in scrupulously removing all separated horn, so as fully to expose the tissues attacked by the disease. The parts should then be thoroughly disinfected with a liquid antiseptic, and a protective pressure dressing applied. As a rule, cauterisation with nitric acid, followed by applications of tar or of mixtures of tannin and iodoform, iodoform and powdered burnt alum, etc., effect healing, without such free use of the knife as has been recommended in the horse during the last few years. GREASE. Grease in the ox seems only to have been described by Morot and Cadéac, and even in these cases the descriptions appear rather to apply to elephantiasis or fibrous thickening of the skin than to grease proper. The descriptions are not sufficiently clear, and the symptoms described differ too much from the classical type seen in the horse to convince us without further confirmation of the occurrence of the disease. PANARITIUM—FELON—WHITLOW. Any injury in the interdigital space or flexure of the pastern may, under unfavourable circumstances, be complicated by death of the skin, necrosis of the interdigital ligament, of the fibro-fatty cushion in the flexure of the pastern, and of the terminal portions of the tendons. These lesions are sometimes regarded as panaritium. In reality, they correspond exactly to what, in the horse, are known as “cracked heels” and “quittor.” The primary injury becomes infected with organisms which rapidly cause death of the skin or the formation of a deep-seated abscess and necrosis of the invaded tissues. =Causation.= Neglect of sanitary precautions and filthy stables constitute favouring conditions, the feet being continually soiled and irritated by the manure and urine. Animals reared on plains, and having broad, flat, widely-separated claws, are more predisposed than animals from mountainous regions, in which the interdigital ligament is stronger and the separation of the claws less marked. Any injury, abrasion, or cut may serve as a point of origin for such complications. Panaritium may even occur as an enzootic with all the characters noted in isolated cases. In Germany it has received the name of “contagious foot disease.” These enzootic outbreaks of panaritium follow epizootics of foot-and-mouth disease, with lesions about the claws. Through the superficial aphthous lesions the parts become inoculated with bacteria, and the severity of the resulting injury is in some measure an indication of the virulence of the infecting organism.