238 



VARICELLA BOUM. 



Mr Ceely has carefully examined the structure of the pus- 

 tules, and finds the fluid enclosed in meshes, 

 formed by fibres which intercept the vesicle. A 

 scab forms over the spot, which is thrown off 

 within the third week of the eruption. 



Treatment. From the great soreness of the 

 teat, cows cannot readily be milked, and it may 

 be essential to introduce in the milk duct a tube, 

 as seen in the annexed engraving, in order to 

 draw off the milk. The udder requires to be 

 freely fomented, and the animal should, in severe 

 cases, have a mild aperient. If the congestion of 

 the mamma be very considerable, and the gland 

 become hard, a large linseed-meal poultice must 

 be applied, containing about a drachm of extract 

 of belladonna. This should be kept on for seve- 

 ral hours, and perhaps repeated. Supporting the 

 udder is often useful, holes being made in the 

 bandage used for this purpose, in order to pass 

 through the teats, so that the milk may be often 

 withdrawn. 



Fig. 205. 



SMALL-POX ix SHEEP. 



Small-pox in sheep spreads both through contagion and 

 infection. Observers are agreed that it is not safe for a 

 healthy flock to come to within 500 yards of a diseased one. 

 A fixed virus is deposited in stables, on pastures, roads, rail- 

 way trucks, &c., by diseased sheep, and many agents may 

 thus act in favouring an indirect contact. Human beings 

 carry the disease for miles, and shepherds have often com- 

 municated the malady to distant flocks. It is said that hares 



