500 Veterinary Medicine. 



the dorsal shed of the wool. In salving sheep it is a great point 

 with the shepherds to avoid opening the way for such entrance, 

 by shedding only at a short distance on each side of the spine, and 

 never directly in the center. Thin wooled sheep are also specially 

 liable to the disease. When the rain enters so as to soak the 

 skin and deeper layers of the wool, it softens and macerates the 

 skin, introduces microbes and favors decomposition and in var- 

 ious ways incites to dermatitis. The skin becomes red and swollen 

 with an eruption of papules and vesicles, and an exudation which 

 concretes in scabs around the wool, which under the constant, 

 accretions from below lifts the wool from its follicles, leaving 

 bare scurfy, or vesicular patches. This appears in different parts 

 of the body beginning in the region of the vertebrae (back, loins, 

 croup), and extending on the shoulders, neck, sides of the 

 chest and abdomen. The disease is rarely inveterate and gener- 

 ally subsides spontaneously on the return of the dry weather. 

 Still it may cause considerable loss of wool and hence it may 

 be desirable to fold the flocks during cold rainy seasons, or, if 

 they must be run at pasture, to cover the back of each with a 

 piece of sacking. 



OTHER CUTANEOUS ERUPTIONS IN SHEEP. 



A dry and a moist eczema have been noticed in the sheep, 

 (^pruriginous eczem.a : impetiginous eczema) and a moist eczema 

 of the pastern comparable to grease in the horse. Fagopyrism 

 also occurs. 



ECZEMA IN SWINE. 



Secondary skin lesions, maculae, vesicles, seborrhoea, crusts. Impetigo 

 of young : cold weather : exposure : filth : spoiled or improper food. Symp- 

 toms : eyelids, etc., show itchy, red, swelling, pustules, scabs, erosions, 

 may affect nose or mouth. Duration 20 days. Hot weather aggravates. 

 Treatment: cleanse: soapy washes: emollient ointments, astringent lotions, 

 saline laxative, diuretics. 



Disease of the skin is by no means uncommon in swine, but 

 it occurs mostly as a manifestation of an acute general malady. 

 Thus in the different specific diseases, caused by microbes. 



