The Peach-Tree Borer. 243 



sinc^le year's respite ; the trees must be treated anew each year and 

 thus the warfare is a perpetual one. 



The following substances injured or killed our trees and are there- 

 fore classed as dangerous : 



Paris green and glue, 



Raupenleim, 



Dendrolene, 



White paint, 



White paint and Paris green, 



Printer's inh. 



The following is a list of the things we found to be practically 

 ineffectual or useless : 



Wire cages, 



Carhon hisulphide, 



Asafetida and aloes, 



Lime, salt and sulphur, 



Resin wash, 



Hard soap. 



Tallow, 



Tansy, 



Whale-oil soap. 



Whitewash, 



Lime and linseed oil, 



Hydraidic cement loash, 



Pine tar, 



HaWs wash (1 applicationb). 



The following methods proved to be quite effective, tliat is, most 

 of them kept out over ^ of the borers : 



Holers loash (2 applications) kept out 3^ to -1. 



Mounding kept out \ to yV- 



Tarred paper kept out \ to \. 



Tobacco stems kept out f to \. 



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

 method applied under the conditions stated on pages 208 and 237. 



Gas tar (p. 235) gave us the best results of anytliing 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 



