236 Diseases of the Skin. 
paralysis, and is often associated with severe abdominal 
pain. Blindness may be also present. The disease 
supervenes upon all forms of debility and anzemia, being 
as common in the extreme condition of obesity as in 
other instances. : 
Treatment of the patient should be entrusted to the 
canine surgeon. 
Parasitism of the nervous system of the dog is some- 
what rare. The common form is the gid hydatid 
Cenurus cerebralis, derived from the sheep, which is 
located in the brain, and is indicated by dulness, gradual 
loss of sight, and an increasing tendency to move in a 
circle, which point to compression of the brain. It is 
questionable whether the animal lives long enough to 
enable the parasite to effect its liberation by the usual 
process of growth, invasion, and ulceration of the tissues ; 
if so, the time of suffering may be shortened by an opera- 
tion for liberating the offender. This is, however, some- 
what doubtful. 
CHAPTER XVIII. 
DISEASES OF THE SKIN. 
Alopecia, or Baldness—Anasarca, or Dropsy of the Cellular Tissue—Eczema, 
Surfeit, or ‘‘ Red Mange ”—Erythema—Warts.— Parasitic DISEASES OF 
THE Skin, ANIMAL Para .ITES: Scabies, or Sarcoptic Mange—Follicular 
Mange—The Harvest Bug—F!eas—Lice—Ticks. VEGETABLE PARASITES ! 
Tinea Tonsurans, or Ringworm—Tinea Favosa, or Honey-Comb Ringworm. 
Tue literature of skin disorders in canine animals has 
remained incomplete during long periods ; but in recent 
years observant men have laid all lovers of the race under 
perpetual obligation by their diligent investigations, and 
the liberal publication of their views and discoveries. It 
was formerly thought that the dog could not perspire. 
This statement implied the total absence of sudorific 
