﻿970 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  the 
  scales 
  were 
  dead, 
  and 
  some 
  scales 
  were 
  dead 
  on 
  trees 
  50 
  and 
  52 
  ; 
  

   tree 
  51 
  was 
  doubtful. 
  

  

  Aug. 
  3, 
  Tree 
  8. 
  The 
  young 
  are 
  abundant. 
  Trees 
  9 
  and 
  10. 
  The 
  

   young 
  are 
  rather 
  few. 
  Tree 
  11. 
  The 
  young 
  are 
  somewhat 
  abundant. 
  

   Trees 
  12-14. 
  The 
  young 
  are 
  very 
  abundant, 
  and 
  the 
  fruit 
  is 
  badly 
  

   infested 
  on 
  tree 
  12. 
  Trees 
  ^8 
  and 
  40 
  have 
  some 
  young 
  scales. 
  Trees 
  50 
  

   and 
  51 
  are 
  infested 
  by 
  many 
  young, 
  and 
  on 
  trees 
  52 
  and 
  53 
  the 
  young 
  

   are 
  extremely 
  abundant. 
  

  

  Sep. 
  7. 
  The 
  young 
  are 
  very 
  abundant 
  on 
  tree 
  3, 
  and 
  extremely 
  so 
  on 
  

   trees 
  8-14. 
  The 
  young 
  are 
  very 
  abundant 
  on 
  tree 
  38, 
  and 
  exceedingly 
  

   so 
  on 
  tree 
  40. 
  The 
  latter 
  is 
  also 
  true 
  of 
  trees 
  50-53. 
  Tree 
  52 
  is 
  favored 
  

   with 
  a 
  number 
  of 
  specimens 
  of 
  P 
  e 
  n 
  t 
  i 
  1 
  i 
  a 
  misella 
  Lee, 
  the 
  minute 
  

   ladybug 
  which 
  preys 
  on 
  the 
  San 
  Jose 
  scale. 
  

  

  Oct. 
  25. 
  Examinations 
  made 
  at 
  this 
  time 
  show 
  that 
  the 
  insect 
  is 
  still 
  

   breeding, 
  and 
  that 
  the 
  scale 
  is 
  much 
  more 
  abundant, 
  some 
  trees 
  being 
  

   almost 
  covered. 
  

  

  2^ 
  % 
  mechanical 
  emulsion. 
  Four 
  trees 
  were 
  treated 
  with 
  this 
  mixture 
  

   on 
  the 
  same 
  day 
  and 
  under 
  the 
  same 
  conditions 
  as 
  in 
  the 
  preceding 
  

   experiment 
  with 
  a 
  20 
  % 
  mechanical 
  kerosene 
  emulsion. 
  Their 
  condition 
  

   at 
  the 
  beginning 
  of 
  the 
  experiment, 
  Ap. 
  11, 
  was 
  as 
  follows. 
  Tree 
  23 
  was 
  

   a 
  very 
  badly 
  infested 
  Howell 
  peartree 
  about 
  10 
  feet 
  high. 
  Tree 
  24, 
  a 
  

   Kieffer 
  pear 
  9 
  feet 
  high, 
  had 
  few 
  scales 
  on 
  it. 
  Tree 
  36, 
  a 
  globe 
  peach 
  

   12 
  feet 
  high, 
  was 
  moderately 
  infested. 
  Tree 
  37 
  of 
  the 
  same 
  kind 
  was 
  13 
  

   feet 
  high 
  and 
  very 
  badly 
  infested. 
  

  

  Ap. 
  19. 
  The 
  bark 
  of 
  tree 
  23 
  is 
  rough, 
  and 
  the 
  kerosene 
  has 
  soaked 
  in 
  

   largely. 
  The 
  insecticide 
  is 
  somewhat 
  evident 
  on 
  tree 
  24, 
  and 
  the 
  buds 
  

   are 
  starting. 
  Trees 
  ^fi 
  ^.nd 
  37 
  show 
  the 
  presence 
  of 
  kerosene 
  to 
  a 
  slight 
  

   extent. 
  

  

  M'ay 
  II. 
  Tree 
  23 
  looks 
  hard. 
  The 
  leaves 
  have 
  appeared 
  only 
  near 
  

   the 
  tips 
  of 
  the 
  twigs. 
  There 
  are 
  many 
  blossom 
  buds. 
  Tree 
  24 
  looks 
  

   fine. 
  The 
  numerous 
  leaves 
  are 
  nearly 
  out 
  and 
  there 
  are 
  many 
  blossom 
  

   buds. 
  

  

  May 
  14. 
  Tree 
  23 
  is 
  thinly 
  clad 
  with 
  leaves, 
  though 
  they 
  are 
  pretty 
  

   well 
  out. 
  There 
  are 
  a 
  few 
  suckers 
  and 
  a 
  few 
  blossoms 
  are 
  opening. 
  

   The 
  leaves 
  of 
  tree 
  24 
  are 
  well 
  out 
  and 
  it 
  has 
  abundant 
  blossoms. 
  The 
  

   many 
  buds 
  and 
  leaves 
  of 
  trees 
  36 
  and 
  37 
  are 
  starting 
  well 
  but 
  they 
  are 
  

   not 
  so 
  advanced 
  as 
  in 
  trees 
  33-35 
  (treated 
  with 
  ij^ 
  lb. 
  Leggett's 
  whale 
  

   oil 
  soap 
  to 
  the 
  gallon). 
  The 
  full 
  bloom 
  of 
  tree 
  24, 
  photographed 
  this 
  

   date, 
  is 
  shown 
  on 
  pi. 
  5. 
  

  

  1 
  

  

  