PARASITES AFFECTING THE SKIN 17 
B OL. picis 
Sulphur nig. # 3 past 
Sapo. mollis 3 
S.V.R. .. . 4a 2 parts 
M. Fiat lin. 
This dressing is not as satisfactory as the one previ- 
ously mentioned, but is less objectionable, as it is non- 
greasy and easily washed off. 
Lysol, creolin, creosote, and chinosol, are efficacious 
in suitable dilution, but need to be frequently applied. 
Symbiotic mange yields to similar treatment, but it 
is unnecessary to wash above the knees and hocks in 
most cases, and any of the dressings enumerated may 
be applied. 
Mange in Cattle. 
Sarcoptic mange in cattle is of very rare occurrence. 
Psoroptic and symbiotic mange are not uncommonly 
met with. 
Psoroptic Mange in Cattle-—This form of mange affects 
the root of the tail, and extends up the rump and on to 
the croup. Occasionally it affects the fore-part of the 
body, as the withers and neck. It usually occurs in 
cold weather, when the animals are housed, and rarely 
in cattle at pasture. It is somewhat difficult to diagnose, 
as it bears some resemblance to eczema and other skin 
diseases. It is contagious only from ox to ox. 
Symbiotic Mange in Cattle—Symbiotes bovis attacks 
cattle in the neighbourhood of the perineum, and espe- 
cially around the anus and the anal fossa. Eventually 
it extends to the inner surface of the thighs, and may 
even spread along the back. The lower portions of the 
limbs, as the fetlocks and pasterns, are fairly common 
seats of the disease. It seldom affects animals which 
are kept under hygienic conditions, and which are in 
good health. 
Treatment.—Any of the common dressings, as previ- 
2 
