204 The Management and Diseases of the Dog. 
“The success of the remedy depends very much on the 
care with which it is applied to every part of the skin. 
“For house dogs, and especially those with fine skins and 
smooth hair, a very excellent and safe remedy is the balsam 
of Peru, dissolved in alcohol (one of balsam to four of 
alcohol). This is an effective acaricide, and has not an 
unpleasant odour.” 
FOLLICULAR MANGE. 
This species of mange, from the acari being buried in the 
sebaceous and hair follicles, and their migration to a great 
extent thus hindered, is not so contagious as the sarcoptic 
form. “Indeed, an affected dog may cohabit with others 
for some time without extending the disease.* The animal 
whose case is described by Weiss, lived for from eight to. 
fifteen days with other dogs, which remained unaffected. 
This feature in follicular scabies is accounted for by the 
Situation and habits of the parasite, and its conformation, 
Burrowing deeply into the follicle, it only leaves its 
habitation, in all probability, when carried from it by the 
fluid thrown out in the follicle, for its limbs are very short, 
and are not furnished with suckers, so that it is not well 
adapted for travelling, differing in this respect from the 
ordinary acarus. Nevertheless, in some instances, the 
slightest accidental contact will suffice for its transference 
from a diseased to a healthy dog ; and, when conveyed ex- 
perimentally to the skin of the latter, it propagates it in a 
remarkable manner. Haubner deposited several, with a 
view to elucidate the contagiousness of the affection, and he 
found that, in about twenty-four hours, there was a slight 
* This fact will serve to explain whv the contagiousness of scabies 
‘has been denied and affirmed by different authorities in this country, 
where only one kind of parasitic “mange” has been hitherto recog- 
nised in the dog. 
