Skin Diseases. 269 



tacked on the lips and other delicate parts of the skin 

 (vulva, etc.,) and pigs and dogs on any part of the body. 



Causes. It is often chargeable on some disorder of 

 digestion as the result of unwholesome food or a sudden 

 change of food, as from dry to green, or from one kind 

 of pasturage to another. In young animals (foals, calves, 

 lambs, kids, pigs,) it appears to be an occasional result of 

 heated or otherwise unwholesome milk. Vetches affected 

 with honey-dew have produced it in white horses or in 

 white spots of those of other colors ; and buckwheat has 

 affected white sheep, pigs, goats, etc., in the same way. 

 It may, however, arise from habitual exposure to cold and 

 wet, local irritation, as from rubbing, etc., or from dis- 

 order of other internal organs. 



Treatment consists in softening the crusts vrith oil, 

 washing them off with soap-suds, and applying soothing 

 or gently astringent agents to the part (spermaceti and 

 olive-oil, benzoated oxide of zinc ointment, Hme -water, 

 sugar of lead lotions, etc.) When it attacks the root of 

 the mane cut off the hair, and if the pain is excessive 

 foment or poultice until the eruption comes to a head when 

 some of the above agents may be applied. When the 

 pustules have burst and show little tendency ^io healing, 

 this may often be hastened by touching the sores with a 

 pointed stick of lunar caustic, or a weak solution of this 

 agent (2 grs. to 1 oz. water) may be lightly painted over 

 the part. The internal treatment consists in the adminis- 

 tration of laxatives followed by bitters (gentian, quassia, 

 boneset, cascarUla, willow bark, etc.,) and diuretics. In 

 obstinate or long-standing cases the same treatment may 

 be followed as in chronic eczema. 



IKFLAMMATION OF THE HEELS IN HOHSES. GBEASE. 



The skin in the region of the heel is so vascular and so 



abundantly provided with oil-glands, and is so frequently 



exposed to iiTitants, wet, cold, mud, filth, etc., that a special 



notice of its inflammatory condition seems demanded, 



23* 



