20 



Pig. 8. View in orchard showing size of screens. 







k --,v ;*/' *-\ .- 



v yH 





ST v » . '«:v '*'■'•! 



fc£> 





L • — ■ % ^^» 





* f ' ! 



y^ a^L.y - %^r> ^BI9 



-V, 



Fig. 9. Wire gauze breeding-cages applied to branches of tree. 



