Tetter, • 255 



As a rule, it is a summer disease, and some horses have a 

 return of it season after season ; and it is often difficult to 

 assign any other cause for it than that it is constitutional. 



Nearly always this kind of tetter is confounded with the 

 mange, which it very closely resembles in appearance ; but 

 it differs from it in two important particulars, first, that it is 

 not contagious, and secondly, that it is not caused by an in- 

 sect. 



TreatmGnt.— This should be begun with a change of diet 

 and a purge of aloes. If after the purge, the bowels are 

 found to be irregular, and feces ill smelling, it is well to give 

 the following : — 



ISTo. 281. Bisulphite of soda, 1 oz. 



Powdered gentian, J oz. 



Make a ball, to give night and morning. 



The most effectual internal remedy is arsenic. This can 

 be advantageously given, as Fowler's solution of arsenic, one 

 ounce once or twice a day. 



For the treatment of the eruption itself, it is necessary first 

 to remove the scabs and crusts, by first soaking the parts 

 with sweet oil for a few hours, then washing with soap and 

 water. If the hair is long, it must be clipped, and all dust 

 and dirt removed. Then the whole of the diseased surface, 

 and a large space of the healthy skin around, should be cov- 

 ered with the following : — 



No. 282. Flour of sulphur, Jib. 



Carbonate of potash, \ lb. 



Carbolic acid, 1 oz. 

 Lard, 



Olive oil, each 2 lbs. 



Mix thoroughly with the aid of gentle heat. 



This is to be left on the skin two or three days, and then 

 washed off wdth strong soap and water. 



