MANGE, 



569 



is important to keep the animals from the rain, which might 

 occasion cold or remove the preparation left upon the surface of 

 the skin. The sheepfolds ought to be disinfected. At the end of 

 a week the second anti-psoric bath is to be given, and within two 

 weeks a third one, if necessary. In all cases it is indispensable to 

 j^ive two at least. Durini^ the intervals the reoj-ions where the 

 disease persists should be treated. When the cure is ended we 

 must also watch the animals and not neglect the mange blotches 

 which may appear subsequently. Finally, we must avoid, as far 

 as possible, taking the animals into the roads and pastures which 

 they frequented before the treatment. 



Saecoptic mange. According to the observations of Delafond, 

 Gerlach, our own, and those of a large number of other authors, 

 this mange is exclusively located on the parts of the head which are 

 bare of wool (head mange, black muzzle) ; it rarely invades the 

 legs. The regions which are usually affected are the lips, the labial 

 commissures, forehead, chin, orbit, cheeks, and the external face of 

 the auricular concha ; thick scabs are found in it to 1 centimetre), 

 they are grayish, and are strongly adherent to the skin ; the pru- 

 ritus is generally very intense. During the warm season mange 

 extends over nearly the whole head ; in winter time it rétrocèdes. 

 It has no troublesome consequence and disappears rapidly by the 

 application of cresol liniment or a decoction of tobacco. An ex- 

 perimental inoculation upon the laniferous skin of merinos produces 

 only a slight dermatitis. 



In long-tailed sheep RolofiF^ observed a sarcoptic mange similar 

 to goat mange (cuirass-shaped scabs, of stony hardness, which are 

 developed upon the head, and a few other regions). 



The most efficient remedies against this psora are creosoted gly- 

 cerin and carbolated glycerin. 



Symbiotic mange. This is also designated under the name of 

 foot mange ; it is located upon the hind legs, whence it may extend 

 upward to the testicles or mammae. It is marked by itching, an 

 abundant epidermic desquamation and the formation of scabs. 



c. Mange of the Ox. 



1. PsoROPTic MANGE This mange, the most frequent in the 

 ox, appears upon the lateral aspect of the neck and shoulders, the 



» Roloff: Berlin. Archiv, 1877. 



