SABCOPTES SCABIEl COMMUNIS. 401 



arm, holding it there by a bandage. As a rule, however, the 

 parasite does not propagate rapidly in man. 



Therapeutic Treatment. In order to produce good results 

 in mange we must kill or remove the parasites, as the itching and 

 scratching cease as soon as they are destroyed, and on that account 

 the artificial eczema disappears rapidly. A large number of anti- 

 parasitic agents are used — creosote, wood-tar, creolin, lysol, sali- 

 cylic acid, and Peruvian balsam. They are all useful, and may 

 be applied according to the following directions : 



It is always necessary to make a general application of the agent, 

 even in such cases where the disease seems to be restricted to one 

 region of the body. The dog must be covered all over with a 

 layer of soft soap or with Hebra's alcoholic potash soap (see page 

 391), which is to be shampooed into the skin with the hands or a 

 stiff brush, and cleansed thoroughly in clear tepid water. The 

 agent which is to be used is then applied with the hand or with a 

 brush, covering only one-third of the body at a time [the trans- 

 lator thinks that the body can be covered entirely with the medi- 

 cinal agent at each application, except in the creosote and carbolic 

 acid combination], repeating this operation in two or three days. 

 At the end of that period the application may be removed by soft 

 soap and water. The best ointments for mange are: 



1. Picis liquid., sapo potassii viridis, spiritus vini rect., aa q.s. 

 Ft. linimentum. 



2. Creolini, sapo potassii viridis, aa 1 part; spiritus vini rect., 

 10 parts. 



3. Creosoti, 1 part; picis liquid., sapo viridis, spirit, vini rect., 

 aqua, aa 7 parts. 



4. Creolini (lysol), 1; petrolatum, 12. 



5. Two to 5 per cent, oily solut.oa of creosote or carbolic acid. 



6. Peruvian balsam, pure or with a little alcohol, ether, glycerin, 

 or oil. 



The four agents which are mentioned first are very energetic, 

 but more or less dangerous, so it is advisable to use them in healthy 

 or not too young or delicate animals, and at the same time to 

 administer small quantities of sulphate of sodium in their drink- 

 ing-water in order to prevent carbolic poisoning. Peruvian balsam 

 is harmless and very useful, but, unfortunately, it is expensive, 

 and is only adapted to very fine pet dogs./> 



26 



