APPENDIX. 387 



The following- methods proved to be quite effective, that is most of them 

 Icept out over one-half of the borers : Hale's wash ( two applications ) kept 

 out one-third to one-half, mounding kept out one-half to seven-tenths, tarred 

 paper kept out one-half to seven-eights, tobacco stems kept out two-thirds 

 to five-sixths. 



We would expect equally as good results from the "digging out "' method 

 applied under the conditions stated on page 383. 



Gas tar gave us the best results of anything we tried. 



We doubt if the applications listed as quite effective would prove as 

 effective if used alone, hence we would recommend that they be combined 

 with the "digging out" method, for the reasons mention on page 383. Make 

 whichever combination best suits your conditions. 



If you find, after a preliminary test on a few trees, that you can use gas 

 tar without injuring your trees, we believe it will prove to be the most 

 effective and cheapest method of fighting the peach-tree borer : but use it 

 carefully and intelligently, as trees have been injured by its use. 



We began this investigation confident that some sure preventive of the 

 entrance of the borers into the trees would be found. There was nothinsr 

 lacking on our part to have the substances we tested do all that they were 

 recommended or expected to do. We did not accomplish our ideal, but we 

 have demonstrated that nine-tenths of the methods recommended are 

 useless. Our experiments furnish much definite data for future workers, and 

 form a definite basis on which to make suggestions regarding methods of 

 fighting the apple-tree borer and other borers. Our experiments must lead 

 to a much more rational and intelligent warfare against the peach-tree borer. 

 Peach growers will now know what not to do, which is often equally as valu- 

 able and important as to know what to do. Finally, our experiments have 

 enabled us to point out with confidence certain methods by which the peach 

 grower may hope to control his worst insect enemy — the peach-tree borer. 



NO. 6. THE BUD MOTH. 



( Tmetocera ocellana Schrif.) 



By Prof. A. B. Corbley. 



1 am not aware that this destructive insect has before been recorded as 

 present in this state, although it has been present in the eastern states for 

 more than half a century and has come to be recognized as one of the most 

 destructive of orchard pests as well as one of the very hardest insects to 

 combat. 



PRESENT AT PORTLAND. 



April 21 of this year, I received from Mr. J. J. Borg, of Portland, a quan- 

 tity of cherry leaves that were being seriously injured by numerous small. 



