CHAPTER XIV. 
DISEASES OF THE SKIN.—EXTERNAL PARASITES. 
MANGE (Sarcoptic), RINGWORM (Honeycoms), 
MANGE (FotticuLar), ALOPECIA, 
ECZEMA, WARTS, 
ERYTHEMA, FLEAS, 
URTICARIA, LICE, 
RINGWORM (PropER), TICKS. 
MANGE (SaRCOPTIC). 
THE term “ mange” is generally used by those people who 
dabble in canine matters without the knowledge necessary 
to diagnose correctly, to denote any affection of the skia 
which results in eruption, irritation, or the detachment of 
hair. 
The true mange of the dog is analogous to the itch of 
man, and the riff of the horse. It is due to the presence of 
a small acarus (Sarcoptes canis)—Fig. 22. Another species, 
termed Follicular mange, is also very frequently met with 
in dogs. This likewise is due to the presence of an acarus 
(Acarus folliculorum or Demodex caninus)— Fig. 23. 
Mange, of whichever species, can only be propagated by 
the migration, directly or indirectly, of the parasite giving 
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