115 



Pres. Weber: English Walnut? 



Mr. Flint: Yes, sir, very much so, and the black walnut. 



A Member: In Texas it is called the sawbuck. 



Mr. Flint: Yes, sir, and they have another one in Texas. Of 

 course the picking up of twigs and burning them is of very little 

 value if your plantation is near a woodlot where they are breeding all 

 the time because you get so many of them out of the woodlot. 



Dr. Colby: When would you put that arsenate of lead on.^ 



Mr. Flint: That should be put on as a regular practice about the 

 first of July. I am saying that for the latitude of Central Illinois. 

 South of that it would come earlier. North of that it would come 

 later. Any one of you can make a few observations in your own 

 plantation for two or three years and you will know ust about when 

 these worms are coming. They come just about the same time each 

 year. 



Pres. Weber: The leaves will be sort of dead looking? 



Mr. Flint: Yes sir; when they first start they will simply skele- 

 tonize your leaf. 



The President: The leaf apj^ears to be dead and the larva is 

 just started. 



Mr. Flint: Yes sir. 



A Member : Are those the ones that hang in bunches in a wet 

 on the branches ? 



Mr. Flint: They hang in bunches on the trunk but the one 

 that makes a web on the branch is the fall web worm. It is a 

 different worm. It comes from a moth. 



A Member: Can you use a torch to burn them out or use a step 

 ladder in a small plantation and then destroy them ? 



Mr. Flint: Yes, you can if the trees are small. 



A Member: Do these defoliating insects attack any other kind 

 of trees, apple trees, for instance? 



Mr. Flint: You have another species. Between the hickory moth 

 and the yellow-necked caterpillar and the red-hump caterpillar, there 

 is almost no difference in the moth; a little difference in the larva. 



Mr. Spencer: I was told by a gentleman who trims trees that 

 if you get tliis substance of which fly paper is made and put that on 

 the trees it will stav all summer and vou can catch these moths. 



