DERMATITIS. 231 
of the part, with as complete an immobilization of the diseased region 
as can be obtained. 
If the patient has to be kept at work, the skin should be washed morn- 
ing and evening with a tepid antiseptic solution and covered with a coat 
of creolinated or borated vaseline. Applications of lead or zinc are less 
efficacious. If the exudation is abundant, absorbing powders (starch, 
tannin, charcoal, oxide of zinc) are useful ; after the washing in the even- 
ing, a thin coat of these should be dusted over the diseased parts. 
When the animal is left to rest, antiseptic dressings bring on a rapid re- 
covery. The wounds are disinfected with a tepid cresyl bath; then, 
when thoroughly dried, they are dusted with iodoform, covered with 
iodoform vaseline and a wadding dressing, which should extend up the 
leg to reduce the movements of the lower joints as much as possible. 
Cagny disinfects the wound with chloride of zinc (1 in 10) and applies 
a coat of Socin paste. 
When scratches have existed for some time, one must likewise employ 
antisepsis and immobilization. We may add that since this disease is 
sometimes related to eczema, an internal treatment is useful. Bicar- 
bonate of soda (20 to 30 grams a day), but, above all, arsenious acid in 
from 50 centigram to 1 gram doses, are the agents that give the best 
results. 
Recent malanders and sallenders require the same treatment. When 
they are old, they must be treated as callous wounds. 
Papular dermatitis of the legs of horses is a common affection in some 
countries, more frequent during extreme seasons than in intermediate 
periods. It is always localized on the extremities and rarely extends 
beyond the knee or the hock. 
The digital region, the fetlock and the canon are swollen and painful ; 
numerous papille appear on the skin, and crusts are formed on their 
surface, which become loose and slough, leaving small hairless spots. 
We have seen them sometimes extending to the forearm and to the shank. 
This affection, the causes and nature of which are not well known, is 
without serious gravity and leaves no mark. It lasts only from three 
weeks to a month, and the affected animals can be kept at their work. 
A few tepid washes and daily cresyl lotions (2 per cent.) are always 
sufficient, even when the eruption is accompanied with quite large swell- 
ings. If fissures and cracks of the skin occur, wadding dressings are 
advantageous. 
Cdematous dermatitis, also called warm edema, is commonly observed 
during summer in the regions where the skin is exposed to the irritation 
of the harness, more especially the withers, where it is produced by the 
saddle. Let the harness fitting badly shave the skin, compress it or bruise 
