270 DISEASES OF CATTLE. 



Coryza. — (See Catarrhus, Liniium and Hoose.) 



Cow-pox. — Varlolce Vaccince. This is a simple aifec- 

 tion of the skin of the udder, which has claimed much 

 notice on account of the valuable benefit conferred by it 

 upon the human family, in furnishing the material for the 

 vaccination of children. 



Cause. At present unknown. 



Nature. A contagious eruption, running a fixed course, 

 and accompanied by slight fever. 



Symptoms. Teats painful, slightly swollen, a faint blush 

 upon tiic udder; and in about three to four days, red hard 

 spots are seen, succeeded by red patches, which, in from a 

 few days to a week, form bladders containing the true 

 vaccine lymph. 



Treatment. Warmth, good nursing, and the drawing of 

 the milk from tlie udder by the syphon — as shown in the 

 treatment of diseases of the teats. (See Teats.) 



Croup. — Stridulous croup in animals is rare, but it is 

 seen occasionally in milch cows, and is very fatal, from the 

 fact that it is situated in the larynx, which speedily causes 

 suffocation, unless the windpipe be opened with a knife to 

 admit of the act of respiration and expiration till the 

 swelling of the head of the windpipe has passed off. 



Cause. Cold attacking the head of the windpipe, fol- 

 lowed by inflammation, and the development of false 

 membranes. 



Symptoms. Loud, stridulous noise or murmur, quickened 

 breathing, excitation, fever, and threatening suffocation of 

 the animal, cough and distress. 



Treatment. Place the animal in the open air — if in 

 summer time, in the shade — and give aconite, in the form 

 of tincture, tw^enty-five drops to a dose. This will allay 



