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  PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  

  

  Conclusion. 
  "We 
  have 
  been 
  able 
  to 
  give 
  only 
  one 
  tliorougli 
  spray 
  

   to 
  the 
  trees 
  this 
  year. 
  There 
  were 
  many 
  difficulties 
  as 
  regards 
  supply 
  

   of 
  water, 
  a 
  thing 
  mostly 
  needed 
  for 
  our 
  operations. 
  The 
  owner 
  of 
  the 
  

   garden 
  was 
  absolutely 
  indifferent. 
  The 
  trees 
  were 
  very 
  tall 
  and 
  the 
  

   spraying 
  machine 
  at 
  our 
  disposal 
  was 
  the 
  ordinary 
  Four-oaks 
  lime 
  

   washing 
  machine. 
  With 
  a 
  power 
  sprayer 
  that 
  is 
  expected 
  soon, 
  we 
  

   hope 
  to 
  achieve 
  better 
  results. 
  

  

  As 
  is 
  shown 
  in 
  the 
  accompanying 
  table, 
  we 
  killed 
  56-92 
  -per 
  cent, 
  

   of 
  the 
  hoppers, 
  in 
  one 
  spraying, 
  but 
  a 
  number 
  escaped. 
  We 
  are, 
  however, 
  

   inclined 
  to 
  believe 
  that 
  two 
  thorough 
  sprayings 
  must 
  be 
  given 
  in 
  order 
  

   to 
  exterminate 
  the 
  pest 
  totally. 
  The 
  first 
  in 
  the 
  beginning 
  of 
  December. 
  

   The 
  second 
  in 
  the 
  middle 
  of 
  January 
  ; 
  if 
  there 
  is 
  need 
  a 
  third 
  might 
  be 
  

   given 
  in 
  the 
  second 
  week 
  of 
  February 
  but 
  not 
  later. 
  Spraying 
  should 
  be 
  

   done 
  during 
  the 
  mornings 
  only, 
  when 
  the 
  temperature 
  is 
  so 
  low 
  tha;t 
  the 
  

   hoppers 
  are 
  inactive 
  and 
  do 
  not 
  fly 
  much. 
  

  

  