SARCOPTIC MANGE. 641 



particularly the base of the tail, and when it is accompanied by erup- 

 tions, loss of hair, and intense itching. 



The distinction between the two conditions, however, is extremely 

 easy after an examination of the two parasites. 



Prognosis. The disease is of slight gravity, and does not threaten 

 the animal's health unless neglected for so long a time that the para- 

 sites invade all parts of the body. In that case the disease may 

 cause anaemia and loss of condition. 



The treatment of this form of mange comprises nothing special, it 

 being sufficient to proceed as directed in the previous article. 



The stables ought always to be thoroughly disinfected. 



MANGE IN THE GOAT. 



The goat suffers from the attacks of sarcoptes, psoroptes, and 

 chorioptes, but up to the present time only two forms of mange 

 have been described, sarcoptic and chorioptic mange. 



Psoroptes have only been found about the eye, where the disturb- 

 ance they produce is comparatively trifling. 



SARCOPTIC MANGE. 



This disease was noticed in 1818 in goats imported into France 

 from Thibet. 



Henderson published the history of a Persian goat which conveyed 

 sarcoptic mange to men and horses. In 1851 Walraff noticed an epi- 

 zootic mange which attacked the goats in the Prattigau valley of 

 Switzerland, which was transmitted to men and sheep and which 

 exhibited the clinical characters of sarcoptic mange. 



Causation. This disease is due to the presence of Sarcoptes scahiei 

 (r. caprce). 



It sometimes occurs in an epizootic form, as Walraff's observations 

 show, but it seems specially to attack goats in Asia and Africa. 



This mange may be transmitted by the goat to sheep, in which 

 animals it attacks the head and muzzle ; it is particularly contagious 

 in sheep having coarse, dry fleeces. 



Similarly sarcoptic mange of sheep may be conveyed to the goat, in 

 which animal it extends all over the body. 



Symptoms. This mange causes intense itching. It first attacks the 

 head and ears, then the trunk, belly, udder, and limbs. If the disease is 

 neglected it becomes generalised very rapidly, and the animals waste 

 away and die in a very short time. 



At the commencement little crusts, which discharge a viscous liquid, 

 are found al)out the head. The goats rub themselves raw, and, as in 



D.C. T T 



