DAIRY MEETING. 125 



and the calf died. If you take every precaution, as far as I have 

 been able to indicate, I think you will succeed in keeping the 

 disease from Maine. 



Ques. How long, after the disease has appeared, would there 

 be danger of infection from that diseased area? 



Ans. Probably about three months. The disease would dis- 

 appear in the animal in three or four weeks, and then the possi- 

 bility of carrying infection might last two months longer. It 

 would be on the safe side to call it three months. 



Ques. Will an animal have it a second time? 



Ans. That is a very important question. An animal may 

 have it a second time, even within six months. That has been 

 shown very definitely. Sometimes animals have had it as many 

 as three times in one year, in European countries, but most of the 

 animals will not have it again within six months, probably. 



Ques. Is lime, or whitewash, a good disinfectant? 



Ans. It is a very excellent one. There is nothing better than 

 whitewash as a disinfectant, especially if a certain amount of 

 carbolic acid is added to it, four or five per cent. 



Ques. Does the germ of this disease travel through the air? 



Ans. That is a very difficult question to answer. I presume, 

 like the germs of most diseases, it must travel through the air, 

 but how far is another question. It undoubtedly does for a 

 short distance. 



Ques. What is the comparative liability to the disease 

 between herds in stable and at pasture? Also, how long a time 

 must elapse before it would be safe to return a fresh herd to the 

 pasture where infected animals had lived? 



Ans. Whether infection takes place easier in the pasture or 

 in the stable I do not know, but I should say that it would be six 

 of one and half a dozen of the other. In the stable the animals 

 come in close contact, but not quite as close as they can in the 

 pasture, where they are licking each other, and nosing each other. 

 But I think there is practically no difference. 



The second question I am not prepared to answer definitely 

 because I think we know but little about it. I should say it 

 would be wiser not to use the pasture again for the season. In 

 that way you would be absolutely safe. It might be perfectly 

 safe to use it after two or three months, but it is better to be on 

 the safe side. 



