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 why 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. 



