COW-POX 48 [ 



approaching to livid, and are surrounded by erysipe- 

 latous inflammation. These pustules, unless a timely 

 remedy be applied, frequently degenerate into 

 phagedenic ulcers, which prove extremely troublesome. 

 The animals become indisposed, and the secretion of 

 milk is much lessened. 



Frequently another kind of eruption appears on 

 the udder of the cow, which, when not carefully 

 examined, may be mistaken for the cow-pox. It 

 manifests itself by the appearance of a number of 

 white blisters on the nipples, filled v/ith a whitish 

 serous fluid. They are distinguished from the cow- 

 pox pustules by not having the bluish colour of the 

 latter, as well as their never eating into the fleshy 

 parts, being entirely confined to the skin, and termina- 

 ting in scabs. This eruption is infectious, but not so 

 highly so as the true cow-pox. 



Dr Jenner was of opinion that this spurious 

 eruption had its origin in the transition of the cow 

 in the spring from a poor to a rich diet, at which 

 period the udder becomes more than usually vascular 

 from the supply of milk. In the West of England 

 dairies there is still a third kind of inflammation, ac- 

 companied by pustules, which is not uncommon. 

 When a cow with a naturally small udder is intended 

 for sale, she is neither milked by the hand or by a 

 calf for a day or two previously to her disposal. 

 Consequently, an unusual quantity of milk is accumu- 

 lated, and the udder is stretched out to an unnatural 

 extent, which also has the effect of distending the 

 nipples, and frequently produces inflammation, accom- 

 panied by pustular eruption. 



Remedy. — It is not necessary to apply any remedy 

 for this complaint ; all that is required is to keep the 

 teats clean, and handle them gently during milking, 



2 H 



