April, '12] CODLING MOTH DISCUSSION 169 



at some station where they need another assistant. Get a man, try 

 it out, and see if it is possible to secure better results. 



A. L. Quaintance: Mr. President, I am reminded by Mr. Burgess' 

 remark that I have in my office force Mr. E. L. Jenne, who was for 

 some years connected with the Washington Experiment Station and 

 spent two years I believe, in a careful study of the codling moth in the 

 State of Washington in connection with Professor Melander. I think, 

 therefore, that Mr. Jenne is thoroughly familiar with western methods 

 of spraying. He was in charge of the spraying operations at Siloam 

 Springs, Ark., upon which the Bureau has reported. We therefore 

 think in this case, at least, that the spraying was done by a true west- 

 erner. 



W. H. Goodwin: During the last few years our results in the 

 spraying experiments in the Ohio Station orchard were variable. 

 The differences in the number of wormy apples where the same kind 

 of sprays were used and the same number of applications were given, 

 was surprising and was due, we decided, entirely to varietal differences. 

 There are only three trees of each kind in the variety orchard and the 

 results obtained were very striking because of the wide range of varia- 

 tion of the percentages of wormy fruit. Some trees having less than 

 twelve per cent wormy while another tree in the same plot but of a 

 different- variety had almost forty per cent wormy fruit. 



President F. L. Washburn : It might be a good thing for the men 

 interested in this subject to get together while we are in Washington 

 and discuss this subject. 



Adjournment. 



Friday, December 29th, 10.00 A. M. 



President F. L. Washburn : The first paper of the morning is by 

 Glenn W. Herrick, of New York. "Notes on the Control of Three' 

 Shade Tree Pests." Mr. Herrick. 



NOTES ON THREE SHADE TREE PESTS 



By G. W. Herrick, Ithaca, X. Y. 

 The Elm-Tree Leaf-Beetle (Galerucella luieola) 



The splendid elm trees on the campus of Cornell University have 

 been so badly injured during the past half dozen years by the leaf- 

 beetle that measures of control became imperative if the trees were to 

 be saved. Fortunately, the University authorities realized the gravity 



