﻿GENERAL 
  NOTES 
  AND 
  RESULTS. 
  21 
  

  

  explanation 
  of 
  this 
  phenomenon 
  than 
  we 
  are 
  now 
  able 
  to 
  give. 
  Certainly 
  

   healthy 
  chinch-bugs 
  do 
  not 
  collect 
  in 
  such 
  clusters 
  upon 
  the 
  exposed 
  surface 
  of 
  

   the 
  ground 
  for 
  the 
  purpose 
  of 
  moulting. 
  It 
  is 
  possible 
  that 
  the 
  skins 
  in 
  these 
  

   clusters 
  are 
  all 
  that 
  remains 
  of 
  bugs 
  whose 
  bodies 
  have 
  been 
  distended 
  by 
  the 
  

   multiplication 
  of 
  the 
  Micrococcus 
  insectornm 
  and 
  ruptured 
  along 
  the 
  lines 
  of 
  

   least 
  resistance. 
  

  

  This 
  peculiar 
  bunching 
  of 
  the 
  bugs 
  I 
  consider 
  to 
  be 
  the 
  effect 
  of 
  bacterial 
  

   disease. 
  Similar 
  bunching 
  was 
  continually 
  observed 
  in 
  the 
  large 
  infection 
  

   cases 
  in 
  the 
  laboratory, 
  and 
  the 
  bodies 
  of 
  the 
  bugs 
  in 
  these 
  bunches 
  would 
  be 
  

   swarming 
  with 
  the 
  fatal 
  Micrococcus. 
  It 
  was 
  observed, 
  both 
  in 
  the 
  laboratory 
  

   and 
  in 
  the 
  field, 
  that 
  the 
  bodies 
  of 
  bugs 
  sick 
  with 
  bacterial 
  disease 
  were 
  un- 
  

   duly 
  distended 
  two 
  or 
  three 
  days 
  before 
  death. 
  

  

  It 
  was 
  observed 
  by 
  my 
  field 
  agent, 
  and 
  his 
  observations 
  are 
  corroborated 
  

   by 
  the 
  reports 
  of 
  farmers, 
  that 
  while 
  the 
  bugs 
  were 
  bunching 
  in 
  places 
  where 
  

   infection 
  had 
  been 
  placed, 
  they 
  did 
  not 
  bunch 
  in 
  uninfected 
  fields. 
  The 
  

   following 
  extracts 
  are 
  given 
  from 
  the 
  reports 
  of 
  experimenters: 
  

  

  Report 
  No. 
  14. 
  — 
  "In 
  from 
  8 
  to 
  10 
  days 
  after 
  the 
  infected 
  bugs 
  had 
  been 
  distributed 
  

   the 
  bugs 
  would 
  begin 
  to 
  die 
  in 
  all 
  the 
  fields, 
  and 
  about 
  the 
  same 
  time, 
  or 
  a 
  little 
  

   while 
  before, 
  they 
  would 
  begin 
  to 
  'colonize.' 
  They 
  would 
  collect 
  in 
  bunches 
  con- 
  

   taining 
  thousands, 
  and 
  would 
  pile 
  upon 
  each 
  other 
  until 
  the 
  bunches 
  were 
  one-half 
  

   inch 
  in 
  depth. 
  The 
  colonies 
  would 
  be 
  but 
  few 
  rods 
  apart, 
  and 
  the 
  interspaces 
  would 
  

   be 
  almost 
  free 
  from 
  bugs." 
  

  

  Report 
  No. 
  15. 
  — 
  (Infection 
  sent 
  July 
  27.) 
  "They 
  piled 
  up 
  in 
  heaps 
  all 
  over 
  the 
  

   field 
  and 
  died. 
  My 
  brother 
  took 
  sick 
  bugs 
  from 
  my 
  field, 
  and 
  likewise 
  his 
  all 
  died." 
  

  

  Report 
  No. 
  24. 
  — 
  (Infection 
  sent 
  June 
  1.) 
  "In 
  two 
  weeks 
  most 
  of 
  the 
  bugs 
  were 
  

   dead; 
  some 
  of 
  them 
  turned 
  white, 
  and 
  the 
  others 
  piled 
  up 
  a 
  quart 
  at 
  a 
  place. 
  Noth- 
  

   ing 
  was 
  left 
  of 
  them 
  but 
  the 
  outside 
  hull. 
  

  

  Report 
  No. 
  25. 
  — 
  ( 
  Infection 
  sent 
  June 
  17.) 
  "At 
  first 
  the 
  dead 
  bugs 
  turned 
  white, 
  

   and 
  later 
  on 
  they 
  commenced 
  to 
  pile 
  up, 
  about 
  a 
  handful 
  in 
  a 
  place." 
  

  

  Report 
  No. 
  32. 
  — 
  "On 
  the 
  sixth 
  day 
  the 
  bugs 
  left 
  the 
  corn 
  and 
  wandered 
  on 
  the 
  

   ground 
  for 
  a 
  few 
  hours; 
  then 
  they 
  collected 
  in 
  bunches 
  and 
  became 
  very 
  sluggish. 
  

   In 
  neighboring 
  fields 
  the 
  bugs 
  were 
  very 
  numerous 
  and 
  in 
  a 
  thriving 
  condition." 
  

  

  Report 
  No. 
  33. 
  — 
  "Eight 
  days 
  after 
  infecting, 
  the 
  bugs 
  were 
  running 
  in 
  all 
  direc- 
  

   tions, 
  and 
  some 
  were 
  piling 
  up 
  and 
  dying. 
  Soon 
  afterwards 
  I 
  found 
  that 
  they 
  had 
  

   all 
  piled 
  up 
  and 
  died, 
  and 
  no 
  live 
  bugs 
  were 
  to 
  be 
  found." 
  

  

  Report 
  No. 
  46. 
  — 
  (Infection 
  sent 
  June 
  11.) 
  "Some 
  turned 
  white, 
  and 
  some 
  are 
  

   mere 
  hulls. 
  They 
  seem 
  to 
  be 
  in 
  piles." 
  

  

  Report 
  No. 
  50. 
  — 
  (Infection 
  sent 
  June 
  22.) 
  "Bugs 
  died 
  and 
  laid 
  in 
  piles; 
  in 
  some 
  

   places 
  one-half 
  inch 
  deep." 
  

  

  Report 
  No. 
  58. 
  — 
  (Infection 
  sent 
  May 
  25.) 
  "A 
  few 
  days 
  after 
  infecting, 
  found 
  as 
  

   many 
  as 
  a 
  large 
  plateful 
  of 
  dead 
  bugs 
  in 
  a 
  place. 
  A 
  few 
  days 
  later 
  no 
  live 
  bugs 
  

   could 
  be 
  found." 
  

  

  Report 
  No. 
  67. 
  — 
  (Infection 
  sent 
  June 
  30.) 
  "In 
  about 
  three 
  or 
  four 
  days 
  the 
  bugs 
  

   began 
  to 
  come 
  off 
  the 
  corn 
  and 
  collect 
  in 
  bunches, 
  being 
  very 
  stupid. 
  Finally 
  all 
  

   died." 
  

  

  Report 
  No. 
  68. 
  — 
  (Infection 
  sent 
  July 
  8.) 
  "In 
  two 
  or 
  three 
  days 
  the 
  bugs 
  began 
  

   to 
  stop 
  work 
  and 
  pile 
  up 
  and 
  die. 
  Did 
  not 
  all 
  die, 
  but 
  ravages 
  ceased." 
  

   —2 
  

  

  