Eczema of Alimentary Origin in Cattle. 485 



confined to the cattle of distilleries which receive an exclusive 

 diet of potato marc. In the pig and dog vomiting has been 

 noticed (Cornevin). Pregnant animals ma\^ abort. 



The local symptoms begin with redne.ss and swelling of the 

 skin around the pasterns, especiall}- of the hind limbs, stiffness 

 and a disposition to lie most of the time ; then small flattened 

 vesicles appear, isolated or confluent, which bursting, form ex- 

 tended, raw patches the abundant exudations of which concrete 

 into thick crusts. The hairs stand erect and are abnormally 

 thick at their roots. Tlie eruption may extend to the whole 

 lim!j, the scrotum, mamma, tail and body at large, .so that in 

 severe cases it is practically univer.sal. The .skin becomes thick, 

 rigid, hide bound, wrinkled and folded with intervening cracks. 

 As a rule, however, the eruption is confined to the limbs, 

 scrotum, mamiuceand tail. In some extensive and persistent cases 

 the buccal mucosa suffers, particularly on the pad on the upper 

 jaw, which shows extensive and irregular ulcers with purulent 

 centre and swollen, congested margin. Al).scesses may develop 

 in the skin and su))cutem and sloughing of the integument is 

 not unknown. 



Mortality is slight as a change of food is usually made and 

 a recovery ensues in a few^ weeks. Yet Baranski noted 20 per 

 cent, of deaths in Galicia, mostly in old, worn out animals 

 which had been stabled for a length of time. 



Lesions. On examination, post mortem, there are found hy- 

 peraemia and inflammation of the small intestine, .some conges- 

 tion of the cerebral meninges, and a red. bloody condition of 

 the muscular system. 



Treatment. The toxic provender must be stopped, or reduced 

 to 20 or 30 litres of pulp daily, supplemented by sound whole- 

 some dry fodder. Marker claims that 70 quarts daily of the 

 potato marc ma}- be given if combined with a fair ration of 

 Indian corn. Turning out doors to pastures usually effects a 

 speedy cure. 



Local treatment is rarely demanded but when the irritation 

 is great it may be .soothed by bathing with cold or tepid water, 

 lead lotion, glycerine and lead lotion, or by the application of 

 ointments of lead, tar, oil of cade or birch, or carbolic acid. 

 Dusting powders of zinc oxide, starch, lycopodium, boric and 



