ECZEMA. 



521 



Marker^ the addition of Indian corn to potato residues, in the pro- 

 portion of one- third, would suffice to counteract the development of 

 eczema, on the condition of not giving more than seventy or eighty 

 litres of residues per day. A large number of agents have been 

 tried. Rabe recommends a tar and soap liniment (tar 1 part, soap 

 2 parts, sulphur 1 part, alcohol 2 parts), or carbolated oil in the 

 proportion of 5 per cent. ; others use desiccatives or astringents, 

 either in a natural condition or in solution : oak-bark, the powder 

 or a decoction, lead solution, sulphate of copper, sugar of lead, etc. 

 Cresol in the shape of a liniment (cresol and green soap, of each 

 100 grammes; alcohol 50-500 grammes), or salve (1 : 10-20), in a 

 water solution (2 per cent.), or alcoholic (1 : 10-25), may also be 

 used with advantage. Moderate exercise favors the cure. 



It is important to keep the places in good order. Uncleanliness 

 predisposes to the disease and aggravates it when it exists. 



D. Eczematous Diseases of the Sheep. 



Non-parasitic dermatoses of the sheep are very rare, and as yet 

 little known. According to Haubner-Siedamgrotzky, we observe 

 in the sheep, as well as in the horse, a papulous eczema which is 

 marked by a modification of the coat ; the wool is in tufts. In the 

 course of distomiasis and other cachectic affections, we may observe 

 a squamous eczema characterized by exfoliation of the superficial 

 epidermic layers. In other cases, this inanition mange is due to 

 the want of care of the skin ; it is then designated " dirty rash.^' 



May has described a prurigiuous vesiculous eruption and an 

 impetiginous eczema under the names of prurigo and furfur aceous 

 rash. ^' Eaux aux jambes sales " (dirty grease) exists also in the 

 sheep, but up to date we have not yet observed authentic facts of 

 eczema produced by malts or residues. 



The most frequent eczemas and also the most important of this 

 species is rain rot (Regenfaide), also called moist mange, or fatty 

 mange. In poorly fed animals with sparse wool, and when the 

 superficial layer of the epidermis is macerated by rain or dampness,, 

 this disease may be developed. It is accompanied by tumefaction 

 of the skin, formation of vesicles and scabs, depilations, itching, etc. 

 These alterations are usually located upon the back and the lumbar 

 regions ; they may extend forward to the withers, neck, shoulders, 



1 Marker: Handbuch der Spiritusfabrikation, 1877. 



