﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  I9OO 
  975 
  

  

  and 
  42-46. 
  The 
  young 
  are 
  rather 
  abundant 
  on 
  trees 
  41 
  and 
  47, 
  and 
  are 
  

   numerous 
  on 
  tree 
  15, 
  specially 
  on 
  the 
  side 
  next 
  tree 
  14, 
  which 
  was 
  treated 
  

   with 
  20 
  % 
  kerosene 
  emulsion. 
  The 
  young 
  are 
  abundant 
  on 
  trees 
  22 
  and 
  

   28, 
  both 
  of 
  which 
  were 
  very 
  badly 
  infested 
  at 
  the 
  start. 
  

  

  A 
  most 
  interesting 
  sight 
  is 
  the 
  hosts 
  of 
  young 
  present 
  on 
  a 
  tree 
  set 
  in 
  

   between 
  trees 
  7 
  and 
  8 
  after 
  the 
  orchard 
  had 
  been 
  sprayed. 
  The 
  trunk 
  

   is 
  almost 
  white 
  with 
  young 
  in 
  places, 
  showing 
  the 
  condition 
  the 
  other 
  

   trees 
  might 
  have 
  been 
  in 
  but 
  for 
  the 
  treatment. 
  

  

  Oct. 
  25. 
  There 
  are 
  naturally 
  more 
  insects 
  on 
  these 
  trees 
  than 
  there 
  

   were 
  Sep. 
  7. 
  For 
  example, 
  the 
  young 
  are 
  numerous 
  on 
  some 
  of 
  the 
  

   twigs 
  of 
  tree 
  28, 
  but, 
  compared 
  with 
  the 
  kerosene 
  treated 
  trees, 
  their 
  con- 
  

   dition 
  is 
  most 
  excellent. 
  

  

  Experiments 
  with 
  2^ 
  % 
  mechanical 
  emtilsion. 
  The 
  condition 
  of 
  the 
  

   trees 
  at 
  the 
  time 
  of 
  spraying, 
  Ap. 
  11, 
  was 
  as 
  follows. 
  Tree 
  55, 
  a 
  beurre 
  

   bosc 
  pear 
  about 
  10 
  feet 
  high, 
  was 
  badly 
  infested 
  with 
  the 
  San 
  Jose 
  scale. 
  

   Trees 
  56-61, 
  all 
  seckel 
  pear, 
  were 
  about 
  14 
  feet 
  high 
  with 
  the 
  exception 
  of 
  

   trees 
  57 
  and 
  58, 
  which 
  were 
  about 
  10 
  feet 
  high, 
  and 
  were 
  all 
  badly 
  infested 
  

   with 
  the 
  scale 
  except 
  tree 
  56, 
  which 
  was 
  moderately 
  infested. 
  Trees 
  78, 
  

   79, 
  globe 
  peach 
  trees, 
  were 
  about 
  14 
  feet 
  high. 
  The 
  former 
  was 
  badly 
  

   and 
  the 
  latter 
  moderately 
  infested 
  with 
  the 
  scale. 
  The 
  spraying 
  varied 
  

   only 
  from 
  the 
  preceding 
  experiment 
  in 
  the 
  per 
  cent 
  of 
  petroleum. 
  

  

  Ap. 
  19. 
  The 
  petroleum 
  is 
  very 
  apparent 
  on 
  trees 
  55-61, 
  78 
  and 
  79, 
  

   and 
  the 
  buds 
  are 
  starting 
  on 
  trees 
  56-68, 
  78 
  and 
  79. 
  

  

  May 
  14. 
  Tree 
  55 
  has 
  its 
  leaves 
  pretty 
  well 
  out 
  and 
  only 
  a 
  few 
  blos- 
  

   soms. 
  The 
  leaves 
  of 
  trees 
  56-61 
  are 
  pretty 
  well 
  out 
  and 
  abundant, 
  ex- 
  

   cept 
  on 
  the 
  more 
  badly 
  infested 
  trees, 
  58-61, 
  tree 
  61 
  being 
  specially 
  bad. 
  

   Trees 
  78 
  and 
  79 
  have 
  abundant 
  leaves 
  about 
  half 
  out 
  and 
  numerous 
  

   blossoms. 
  

  

  May 
  28. 
  The 
  leaves 
  of 
  tree 
  61 
  are 
  rather 
  thin, 
  but 
  this 
  evidently 
  is 
  

   due 
  to 
  the 
  abundance 
  of 
  the 
  scale, 
  as 
  the 
  foliage 
  of 
  trees 
  55-60 
  is 
  much 
  

   thicker, 
  and 
  they 
  are 
  fortunate 
  in 
  the 
  possession 
  of 
  much 
  less 
  scale. 
  

  

  July 
  2. 
  No 
  living 
  young 
  are 
  found 
  on 
  trees 
  55-57 
  and 
  but 
  few 
  on 
  

   trees 
  58-61. 
  They 
  are 
  rather 
  numerous 
  on 
  trees 
  78 
  and 
  79. 
  

  

  Aug. 
  3. 
  There 
  are 
  very 
  few 
  or 
  no 
  living 
  young 
  on 
  trees 
  55-57, 
  78 
  and 
  

   79 
  and 
  comparatively 
  few 
  on 
  trees 
  58-60, 
  and 
  on 
  tree 
  61 
  they 
  are 
  some- 
  

   what 
  abundant. 
  This 
  tree 
  was 
  in 
  an 
  extremely 
  bad 
  state 
  to 
  start 
  with. 
  

  

  Sep. 
  7. 
  Very 
  few 
  or 
  no 
  living 
  young 
  on 
  trees 
  55-57, 
  78 
  and 
  79. 
  Scales 
  

   are 
  rather 
  abundant 
  on 
  trees 
  58-61. 
  

  

  Oct. 
  25. 
  The 
  conditions 
  are 
  practically 
  the 
  same 
  as 
  obtain 
  in 
  those 
  

   sprayed 
  with 
  the 
  20 
  % 
  emulsion. 
  

  

  