DISEASES OF COWS. 445 



udder after fomentation, is also useful in mild cases. 

 To draw the milk from the udder is indispensable, and 

 the milking tube should be used if necessary. When a 

 portion of the udder becomes tumefied, fomentations of 

 hot water, or a hot poultice of linseed meal applied to 

 the part by means of a broad bandage covering the udder 

 and brought up over the back and securely fastened there 

 and behind the buttocks, will be advisable. These rem- 

 edies are only suggested for use with such cows as may 

 be affected with garget. It is impossible to mention 

 particularly the right treatment for every special case. 

 Ordinary judgment and reason must be used to meet 

 each particular case when treatment is found necessary. 



VACCIKE VARIOLA — COW POX. 



One of the most annoying diseases to which cows are 

 subject is pox, or variola. It would be trifling in its 

 effect upon the cow were it not that it affects the teats 

 and renders milking dilBficult or almost impossible, and 

 that when it appears in a herd it goes through the whole 

 of it. This disease is an eruptive, contagious fever, com- 

 municated by a special virus or germ reproduced by the 

 disease. The history of the disease is as follows : 



When the owner of a cow is milking the animal, he 

 discovers that she is uneasy and restless, and on search- 

 ing for the cause may find one or more hard nodules in 

 the skin of the teat, which are painful to the cow when 

 pressed. The milk also falls off somewhat in quantity. 

 In a few days these nodules appear at the surface in the 

 form of round, inflamed spots, somewhat raised above 

 the skin, and depressed or pitted in the center. The 

 form and position of these spots are similar to that 

 shown in the engraving, figure 105, and they usually 

 appear upon the teats in tlie position shown. In three 

 or four days the spots are found to contain liquid matter. 



