212 



coming back, while waitiug for another car, I wanted to take 

 a seat. There was a walnui tree at the corner of the lane, 

 and I wanted to lake a seat on a bench under the tree. When 

 I came to take that seat, it was literally covered with those 

 gypsy moths, coniiiiu oil" of (hat tree. What I want to say to 

 you is this: I watched and noted that there was a little fly, 

 which is like a comparison of a guinea hen to an ordinary 

 chicken — they were just that shape— and one or two would fol- 

 low a moth and they would get on top of the moth and just 

 sting it and jump off again. 1 kept on investigating, and it took 

 me two hours to watch them. As soon as they would totu'h the 

 gypsy moth at a certain place back of the neck, they would kill 

 it every time. That was an accidental investigation. I spoke 

 to several professors about it, and asked them to look it up, and 

 see whether they could not propagate that fly. 



ME. STEVENS : Where was that? 



MR. THALHEIMER : In Reading, Pa. 



MR. STEVENS: May I ask Dr. Murrill a question? He 

 made a statement that good forest management would not help 

 to control chestnut blight disease. I would like to ask his au- 

 thority for the statement. 



DR. MURRILL : My own experience about New York State, 

 over a wide area, for several years. 



MR. STEVENS: In forests? 



DR. MURRILL: In forests, over dense, almost full grown 

 chestnut forests. The disease occurs without reference to ill 

 or well trees, and I have noticed it on vigorous trees as well as 

 on trees diseased from other causes. 



PROFESSOR RANE: In construing that term "forestry 

 management," it seems to me it might go further than just ap- 

 plying it to chestnut trees. As a matter of fact, our forest 

 management as regards the moth situation is to eliminate those 

 trees and bring in others that would take their place. Forestry 

 management means, therefore, the elimination of the chestnut 

 with the idea of bringing in other species ; so we can bring that 

 thing out in a practical way, from a different standpoint than 

 just thinning the chestnut. 



