976 Acarus Mange. 



cases, and still more those that are further advanced, require 

 treatment continued for weeks or months. Other things being 

 equal, the prognosis is always more unfavorable in young de- 

 bilitated dogs than in older ones. According to Sdiindelka, 

 many more dogs may be cured by exercising sufficient patience 

 and perseverance than is usually assumed (of 177 cases 50 were 

 cured). 



Treatment. First of all the hair should be clipped and, 

 according to the extension of the disease, this should be done 

 either over the diseased areas and their neighborhood, or pref- 

 erably over the whole body; then, and also later, it appears 

 absolutely necessary to split all nodules or pustules with a 

 pointed knife and to remove their contents. In this way one 

 gets rid of many mites, especially if a bath in a 5% solution of 

 liver of sulphur is administered each time. The pressing out of 

 fresh pustules and subsequent bathing is advisable also in the 

 treatment of the later stages, and so is the emplojmient of 

 periodical fomentations and rubbings with soap liniment, salicy- 

 lated alcohol or salicylic oil, 10% lysol vasoliniment, in order 

 to cause loosening of the skin and detachment of the horny 

 plugs in the hair follicles. 



Of the parasiticides the most suitable of all are non- 

 irritant substances, since by their use there is the least danger 

 of causing an extension of the disease or of the squamous erup- 

 tion becoming pustular; particularly the employment of tar 

 cresol preparations and corrosive sublimate easily occasion 

 a spread of the process. The remedies should be applied with- 

 out force, but nevertheless thoroughly, with a soft brush, with 

 the hand or a pad of cotton wool. Very frequent washings may 

 also be harmful. The selection of remedies is influenced by the 

 species of animal and by the form and extension of the disease, 

 and also by the condition of the patient. During long continued 

 treatment a change of the anti-parasitic remedies not infre- 

 quently becomes necessary. 



Peruvian balsam is well adapted for mild cases and pro- 

 duces favorable effects, especially if mixed with alcohol. 

 Siedamgrotzky produced a cure with this preparation in a 

 severe case, but others saw no particularly good results in such 

 cases in spite of long continued treatment. The high price of 

 the drug limits its employment to mild cases of disease ; on the 

 other hand it can scarcely be dispensed with in acariasis local- 

 ized on the head. In circumscribed disease eudermol is of good 

 service (Fettick) in the form of 1% ointment, but it is also ex- 

 pensive; in many cases a brief depression becomes manifest 

 after the application. Salicylated oil (1 part salicylic acid dis- 

 solved in 30 to 40 parts of warm oil), creolin or ichthyol (with 

 alcohol aa), corrosive sublimate ointment (1:100) or carbolic 

 ointment (1:10) at times give good results. The application 

 of these remedies must be repeated several times at intervals 



