RED MANGE. 403 
Ointment (or dressing) for virulent mange : 
Green iodide of mercury, 2 drachms. 
: Lard, 2 ounces, 
Mix, and rub as much as can be got rid of in this way into the diseased skin, 
every other day, for a week ; then wait a week, and dress again. Take 
care to leave no superfluous ointment. 
A milder ointment : 
Compound sulphur ointment, 4 ounces. 
. Spirit of turpentine, 1 ounce, 
Mix, and rub in every other day. 
ed mange, resembling eczwma in man, is quite of a different 
nature to either of the above forms, being evidently a disease of 
the bulb which produces the hair, inasmuch as the colouring matter 
of the hair itself is altered, and, if white, the hair looks like a pale 
brick-dust colour, almost as if the dog had been sprinkled over with 
this material. It first shows itself almost invariably at the elbows 
and inside the arms, then on the front and inside of the thighs, 
next on the buttocks, and finally on the back, which is only at- 
tacked when the disease has existed for some weeks or months. 
The health does not seem to suffer, and the skin, though rough and 
dry, is not at all scabbed, except from the effects of the scratching, 
which is very frequent, but not so severe as in the virulent or foul 
mange. It appears most probable that red mange is contagious, 
but it is by no means a settled question, as it will often be seen in 
single dogs which are in the same kennel with others free from it 
entirely. Of its exact nature I know nothing beyond the belief 
that the disease is in the blood, and is not caused by any parasite. 
Dogs which are highly fed, and which are allowed to lie before 
the fire, are the most subject to it, while the poor half-starved 
cur becomes affected with the foul or virulent forms. The ¢reat- 
ment consists in lowering the diet, giving aperients (12) or (13); 
following these up with the addition of green vegetables to the 
food, and at the same time using one or other of the following 
applications every other day. In obstinate cases arsenic may be 
given internally (see page 401) :— 
Dressing for red mange: 
Green iodide of mercury, 14 drachm. 
Spirit of turpentine, 2 drachms. 
Lard, 14 ounce. : 
Mix, rub a very little of this well into the roots of the hair every other day; or, 
