26 VETERINARY PARASITOLOGY 
Mr. Gray recommends an ointment composed of 
salicylic acid, 1; gum styrax, 1; sulphur, 1; lard, 9. 
The styrax causes this composition to penetrate well 
into the skin, and it is decidedly useful. 
Whatever treatment be adopted, the skin should be 
first washed and well kneaded with soap and water, and 
as many pustules as possible squeezed out. The dressing, 
when possible, should be applied with a good deal of 
friction. 
The general condition must be attended to, and arsenic 
in some form should be given in combination with 
laxatives. 
Sarcoptic Mange in the Pig.—This variety of mange 
first attacks the head, especially in the neighbourhood 
of the orbit and ears. The inner surface of the thighs 
is a common seat, but the whole body may eventually 
become involved. 
The affected areas become covered with silvery-grey 
scales of a considerable thickness. ‘When removed, the 
skin appears very much thickened and inflamed, and 
often shows wart-like elevations, which are in reality 
hypertrophied papille. 
The Sarcoptes suis is one of the largest of the mange- 
mites, and the females may measure $ millimetre in 
length, and hence be visible to the naked eye. 
Treatment.—-Sulphur and tar dressings in oil are 
usually quite efficacious. 
Mange in Sheep. 
All three varieties of mange are found in the sheep, 
but of these the psoroptic type, which gives rise to 
“ sheep scab,” is the most important. 
Sarcoptic Mange in Sheep.—The Savcoptes ovis con- 
fines itself to those portions of the body which are 
covered with hair, and seldom attacks parts which bear 
wool. 
