35 



ing with arsenate of lead, or in most cases the egg masses 

 covered with white can be picked off. There are two broods 

 in a year, the egg masses of one being found in the latter 

 part of July and August, and those of the other brood in the 

 winter. 



In conclusion I would like to say that in spite of our 

 400 odd insects that attack fruit trees in Massachusetts, 

 treatment just before the buds open, with arsenate of lead, 

 combined with Bordeaux mixture and a second spraying 

 after the blossoms have fallen but before the calyx lobes 

 have closed, together with a third spraying the last of June, 

 will prevent the most of the trouble with the chewing in- 

 sects I have considered. 



For the scales and sucking insects, the entire treatment 

 is different. The point to be carefully adhered to is first, to 

 spray thoroughly, second to spray thoroughly, and third, to 

 spray most thoroughly. It does not matter how many times 

 you spray, or what you spray with, if you do not under- 

 stand the object of the spraying. Therefore, if spray- 

 ing is worth doing at all, it is worth doing well, and the man 

 who is going to make a success in Massachusetts in fruit 

 raising, is the man who is going to do all parts of his work 

 thoroughly, at the right time and in the right way. 



Quite a portion of the lecture was devoted to the ex- 

 planation of pictures thrown on the screen, and cannot 

 therefore be printed. 



DISCUSSION 



Q. Did I understand you correctly to say that it was 

 desirable to remove the Tanglefoot band after the spring 

 insect has gone? 



Dr. Fernald : I think not. It can stay on and be ef- 

 fective a long time. The great point is to get it on in time. 

 If you are a week too late, you might almost as well not put 

 it on. Put it high enough so it will not be rubbed off. 



Q. Would it be possible to use the wire netting for 

 peach trees? 



No, for some reason the use of wire netting for these 

 sometimes increases the borers. Why that is, I don't know. 

 Nothing has been recommended that is always effective. 

 Tar is sometimes put on the trees and at one station it 

 worked first rate, at another it killed the trees. 



