274 Diseases of Cattle, 



Ko. 306. Carbolic acid (pure), 1 drachm 



Water, 1 pint. 



For one dose three time a day. 



The other preparations of the acid, as the carbolate of 

 Boda, etc., may also be used, but the above is more direct and 

 simpler. 



FOOT-AND-MOTTTH DISEASE— EPIZOOTIC APHTHiE— CONTAGIOUS 



ECZEMA. 



Definition. — A highly contagious, but rarely fatal, febrile 

 disease, occurring in cattle and sheep, and capable of trans- 

 mission to pigs and man; it is characterized by an eruption 

 of small blisters in the mouth, between the clefts of the 

 hoof, and along its upper margin at the coronet. 



Causes. — The cause is a specific poison supposed by some 

 to be of an animal, by others of a vegetable nature. It re- 

 mains in the system from one to four days before it produces 

 the characteristic symptoms. 



The foot-and-mouth disease was first introduced into the 

 United States in 1869, and has prevailed more or less ever 

 since. 



Symptoms. — These are, at first, an increase of temperature 

 in the body, shortly followed by an eruption of small 

 blisters, about the size of a ten-cent piece, on the tongue, in- 

 side the lips, on the roof of the mouth and sometimes on the 

 udder. Smaller blisters also make their appearance in the 

 fissure of the feet, and around the coronets and heels. 



There are some lameness, a flow of water from the mouth 

 and eyes, constant movements of the lips, and difficulty in 

 swallow^ing. 



The blisters soon break and leave behind raw surfaces,, 

 which either proceed to healing, or, in severe cases, form 

 ulcers and become gangrenous. 



