1907.] DISCUSSION. 227 



I am trying to find out, whether the spore will live over so as 

 to affect a subsequent crop, but I can readily see how the bhght 

 might be carried into a crop growing upon a new field. The 

 point with me is whether the yield would be decreased if you 

 continued to raise potatoes upon a field which had been infected. 



The President. If you wish to get entirely away from 

 the blight, you go out somewhere and plant your potatoes where 

 they have never been raised before and you are pretty sure not 

 to have it the first year. 



Dr. Clinton. That is what I understood the gentleman 

 did, but he found it worse on the land that had not had potatoes 

 on it the year before. 



Mr. Beach. My theory is that we have got to adopt some 

 principle of rotation ; that it will not do to grow potatoes on 

 the same ground two years in succession. More time must 

 elapse before it will be safe or prudent to try to raise a crop 

 upon the same land. 



Secretary Brown. Gentlemen, Mr. Newcomb has asked 

 permission to occupy the attention of the audience for ten 

 minutes on the Question of bovine vaccine. It is something 

 that the Board of Agriculture neither endorses nor refuses to 

 endorse, but which we look upon with an open mind. We are 

 always ready to learn about anything that is going to improve 

 the condition of Connecticut farmers. 



Note. Mr. Newcomb then explained bovine vaccine. 



The President. I can testify that, in my opinion, this 

 matter that Mr. Newcomb has brought to our attention this 

 afternoon is very important for us to investigate. 



Secretary Brown. This is rather a mixed diet, but a very 

 good one, I think. Now we have a gentleman to speak to us 

 for half an hour, or a little more, on the noblest animal that 

 has been given for the use of man, — the horse. Mr. Frank 

 D. Ward, of Batavia, N. Y. It is a subject with which Mr. 

 Ward is entirely familiar, and one concerning which I know 

 you will be glad to hear. 



