MANGE. 



571 



d. Mang-e of the Goat.^ 



Saecoptic of recent origin is always localized upon 



regions where the hair is sparse, especially on the head, lips, nose, 

 ears ; but it is quickly propagated over the whole surface of the 

 body. 



It is marked by the presence of furfur and scaly scabs, which 

 are hard, split, and of a grayish blue ; the skin becomes thickened, 

 cracked, wrinkled, parchment-like, and little by little assumes a 

 gray coloration. We notice the appearance of circnmscribed depi- 

 lations on its surface, which gradually become enlarged ; in the 

 course of time the animals may become entirely nude. An intense 

 pruritus exists at the same time. A fatal termination is quite fre- 

 quent in the goat : but of 1000 sick animals observed by Wallraif, 

 500 died. In a single community Klingau lost 100 head in a year. 



It seems to be easily transmitted to man. In one locality Wall- 

 raff found almost all the families contaminated. Roloff has by 

 experiment communicated it to sheep with short wool (Somali), and 

 to animals with smooth wool, poor in grease (large-tailed sheep). 



For treatment we must resort to ointments with a tar base, sul- 

 phur, carbolated glycerin, etc. Baths must be omitted, for they do 

 not agree with the goat. 



e. Mange of the Pig*. 



Sarcoptic mange of the pig, which is caused by the Sarcoptes 

 squamiferus, (?) invades the head first, especially the fossa beneath 

 the eye, the eyelids, cheeks, and auricular region ; thence it extends 

 upon the neck and shoulders, the back, the inner aspect of the 

 members, and finally over the whole surface of the body. The 

 affected regions are covered with an abundant epidermic desquama- 

 tion, and also thick scabs, which may reach the thickness of one 

 centimetre, and the color of which varies from a grayish white to 

 a silver-white. Sometimes the animals seem as if dusted with 



1 We have found sarcoptic, symbiotic, Sind posoroptic mange in the goat. ■ 

 Symbiotic mange, as observed by Delafond, was located upon the upper part of the 



trunk (neck, fetlock, back, and loins). Mollereau found it localized upon the upper 



part of the legs (see Bull. Soc. cent. Vet., 1888). 



Psoroptic mange, which is localized inside the ear (auricular acariasis), has been 



seen by Pezas, Mégnin, Nallet, Raillet, and Morot. It may affect both ears (Morot 



and Nallet) or one only (Pezas). (See Revue Vét., 1889, and Bull. Soc. centr. Vet., 



1890.)— N. D. T. 



