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ON THE DISEASES OF CATS.
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being caused by the presence of a parasite distinguished as Demodex folliculorum, is of a different nature to the sarcoptic mange, and is less readily expelled.
"Unlike sarcoptic mange, which oftenest affects the hairless parts of the body, the follicular mange is found upon the back from the neck, down the course of the spine, to the tail. I think the reason of the selection on the part of the demodex is that the hair follicles, or little bags from which the hairs grow, and in which the parasite lives, are much larger, and afford better accommodation. The first symptom of anger in a dog or cat is usually the elevation of these hairs, showing them to be stronger, and consequently having
