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Veterinarians have noticed in Al^-eria that a disease similar to 

 mnno-e in camels breaks out amoii"- mules used for pack purposes 

 and working with camels ; as it especially manifests itself under 

 the pack saddle, tlu^ prol)al)ilit y is that il is ordinary ('((nine scabies, 

 1)ut we are cautioned that it is as well to keo]) mules a])art from 

 scabby camels. The llama and giraffe are invaded by the same 

 acarus as are the two species of camel (Megnin). The readiness 

 of passage from one animal to another and with which are pro- 

 duced morbid conditions is well illustrated by the fact that 

 mange has been seen in camels two or three days old (three or 

 four days according to Lombardiui's observations) ; middle-aged 

 camels are said to be less liable to become affected than the 

 young or the old. 



C<iuses\ — The only absolute cause of the disorder is the acarus 

 or its ova, which may be conveyed mediately or immediately. 

 Mediate contagion results from imperfect isolation of the sick, 

 such as use of pack-gear by sound animals after it has been put 

 aside without thorough cleansing on account of its original 

 wearers suffering from mange and dying or being put into hos- 

 pital ; temporary interchanges of gear ; rubbing of animals against 

 trees or other fixed objects, which have been used for the same 

 purpose by the mangey ; use of contaminated serais and camping 

 grounds ; tinally, care of the affected and non-affected by the 

 same drivers. Want of early attention, neglect of veterinary 

 advice, and injudicious system in working are causes of isolated 

 cases developing into enzootic outbreaks of this disorder, a fact 

 to which Mr. Oliphant has drawn attention. We may add to these 

 want of promptitude in diagnosis and of attention to the good 

 practical rule in such cases to always suspect and provide against 

 the more severe disease when the diagnosis is at all doubtful. 



Symptoms. — The disease commences as spontaneous loss of hair, 

 followed by somewhat profuse serous weeping, and then pustula- 

 tion with scanty discharge. The signs first appear at some point 

 or points of the surface of the body, and from them they spread 

 rapidly. Stress is laid by diffei'ent writers on the order of 

 invasion of the several parts, thus Yaldwin mentions that it 

 commences under" the thighs ; Haslam, that it attacks the parts 



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