general diseases. 229 



RABIES OR HYDROPHOBIA. 



(See page 50.) 



COW-POX VARIOLA VACCIN/E), 



Affects the udder and teats of cows chiefly. The rash 

 consists of small, pale red, hard pustules, varying in size 

 from a pea to a horse-bean. The pustules are converted 

 into vesicles containing a viscid, yellow fluid. These 

 gradually increase in size, until in about eight and a half 

 days they are about five-eighths of an inch in diameter. 

 In the center they have a light blue tint, but toward the 

 margin they are reddish blue or yellow. Their contents 

 now become purulent. The center is usually depressed, 

 and a crust begins to form there, gradually extending to 

 the periphery. The border is hard, swollen, and painful 

 and a red areola forms, together with much thickening 

 under the skin. 



About the fourteenth clay a scab, which is thick, dark, 

 adherent, and shining, is formed, and about the fifteenth 

 day it becomes detatched, having a depressed scar, which 

 is at first bluish red, but gradually turns pale, and per- 

 sists for a long time. 



The febrile symptoms are very slight and usually un- 

 important. The infection is not dangerous. A partial 

 loss of appetite, an abstention from chewing the cud, 

 trifling constipation, diminution, and deterioration of the 

 milk are observable. The udder is swollen, especially near 

 the teats, and milking causes pain. There may be more 

 than one eruption of pustules. 



The disease usually lasts about seventeen and a half 

 days, but may be protracted to about five weeks, during 

 which time the milk is unfit for use. 



Remedy. — Give a laxative and draw off milk with a 

 siphon. Draft : Solution acetate ammonium, 4 fluid oz., 

 tincture aconite (V. P.), 40 drops, water a sufficient quan- 

 tity, 3 times daily. 



