DISEASES OP THE DOMESTIC ANIMALS 831 



by means of the virus taken from a pustule at the tenth day, and 

 introduced into the tail of a healthy sheep, will produce immunity 

 without eruption. No innoculations must be made until variola 

 breaks out in a flock, or the disease may be spread by the process. 

 Medical treatment includes cleanliness of surroundings and bedding; 

 warm shelter; fresh air; soft and nourishing food. The nostrils 

 and eyes should be cleaned with saturated boric acid solution; and 

 chalk may be put in the drinking water, if diarrhea is present. 



Cow Pox and Horse Pox appear to arise from contact of healthy 

 animals with variolous or vaccinated persons. Cow Pox therefore 

 usually occurs in cows; occasionally in bulls, oxen and young stock. 

 Cow Pox is very rare and valuable in providing a source of vaccine 

 lymph. The use of a milking tube; frequent hot fomentations; and 

 measures advised for mastitis are indicated, when the udder is in- 

 flamed. 



In Horse Pox, clip the hair and cleanse and bathe the parts with 

 2 per cent, lysol solution, and apply wet compresses of the same. 

 In later stages, the use of carbolized vaseline is to be recommended. 



Verminous Bronchitis. See Bronchuis. 



Vertigo. Megrims. Blind Staggers in the Horse. 



Occasionally seen in Dogs, Pigs, Cattle and Sheep. 



Cover the eyes with a blanket; remove harness about the neck; and 

 walk the animal about. Also throw cold water forcibly over the 

 head. Cerebral congestion from pressure on the neck, or from 

 short over-draw check, from overheating, and from chronic lung 

 or heart disease, may cause it. Cerebral anemia or general anemia 

 may induce the disorder. A strong glare of light affecting the 

 eyes, foreign bodies in the ears, and perhaps indigestion, may 

 induce megrims. Often it is an inexplicable neurosis. If cause 

 can be discovered, it should be remedied, if possible. Animals may 

 often be ridden without danger of an attack (which would appear 

 if they were driven). Certain blinders favor the disorder. Reg- 

 ular and hard exercise is often beneficial. Following a seizure, 

 give an aloes ball. 



ViLLITIS. CORONITIS (In HoRSEs). 



Inflammation of the coronet with heat, bulging and tenderness 

 of the coronet; and brittle, striated appearance of hoof. If severe, 

 separation of the hoof may occur. Remove shoes and enforce rest, 

 with bran and flaxseed poultice to the forefeet. With the subsi- 

 dence Of acute symptoms, apply fly blister to the coronet. May 

 work with bar shoes, or the animal may be sent to pasture if re- 



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