514 Veterinary Medicine. 



those that are already becoming aged. The affected parts are 

 covered with a floury or branlike product lying upon a dry surface 

 usually devoid of irritation or congestion, though it may 

 be distinctly congested and reddened, and even the seat of pru- 

 ritus. The affection is usually confined to limited areas, more or 

 less destitute of hair, and without showing a disposition to active 

 extension. In the cat, however, it.may affect the whole dorsal as- 

 pect of the body, being associated with extreme electrical suscepti- 

 bility, so that on being stroked the hair at once collects in tufts, 

 crackles, and in the darkness sparkles, and the animal at first fawn- 

 ing on the hand, will fly at and scratch it after a few strokes. 

 The scaly product is excessive and drops off abundantly when 

 handled, without, however, leaving thin or bare patches. 



Treatment is mainly in the line of a simpler and more natural 

 diet, the avoidance of sugar and cake, the correction of disorders of 

 the digestion, or the hepatic or urinary functions, the exhibition 

 of an occasional laxative, and of alteratives, especially Fowler's 

 solution. 



I,ocally, alkaline lotions, carbonate or bicarbonate of soda or 

 potash, borax, sulphide of potassium and iodide of sulphur are 

 often useful. A moderately strong solution of common salt with 

 glycerine in water is an useful alternate, and a warm saline 

 or bran bath may soften the skin and modify its nutrition. 



CONTAGIOUS PUSTUI.AR DERMATITIS IN THE 

 HORSE. ACNE. 



History. Cause : bacillus. Symptoms ; incubation 6 to 15 days, skin 

 tenderness, heat, swelling like peas, hazel nuts, vesicles, pustules, exuda- 

 tion, concretions among hairs, depilation, healing in 15 days. Leaves white 

 spots with lighter hair. Extension by grooming : general eruption : sub- 

 cutaneous swelling, sloughs, delayed healing. Lymphangitis. Diagnosis : 

 from chaps and bruises, from horse pox, from impetiginous eczema, from 

 urticaria, from farcy. Prevention, quarantine new horses, separate dis- 

 eased, disinfect skins of the unaflFected, disinfect stables and harness. 

 Treatment : soapy wash : germicide lotions. 



This has been largely described as an imported disease thus on 

 the European continent it is the English variola, and in England 



