﻿12 
  CONTAGIOUS 
  DISEASES 
  OF 
  THE 
  CHINCH-BUG. 
  

  

  facilitates 
  the 
  spread 
  of 
  the 
  contagion. 
  The 
  first 
  distribution 
  of 
  diseased 
  bugs, 
  two 
  days 
  after 
  1 
  re- 
  

   ceived 
  the 
  package 
  by 
  mail, 
  apparently 
  produced 
  no 
  results. 
  A 
  part 
  of 
  them 
  were 
  retained 
  in 
  the 
  in- 
  

   fection 
  jar 
  (quart 
  Mason 
  fruit 
  jar). 
  A 
  half-pint 
  of 
  bugs 
  were 
  collected 
  from 
  the 
  field. 
  Three 
  days 
  

   later 
  a 
  foul 
  stench 
  was 
  found 
  to 
  emanate 
  from 
  the 
  jar, 
  and 
  a 
  part 
  of 
  the 
  bugs 
  in 
  it 
  were 
  dead. 
  On 
  July 
  

   3, 
  1 
  took 
  advantage 
  of 
  the 
  cool, 
  damp 
  evening, 
  and 
  took 
  a 
  few 
  buckets 
  of 
  cold 
  water 
  and 
  sprinkled 
  the 
  

   edge 
  of 
  the 
  millet, 
  and 
  distributed 
  more 
  infected 
  bugs. 
  On 
  the 
  6th 
  I 
  found 
  millions 
  of 
  dead 
  bugs. 
  I 
  

   think 
  the 
  night, 
  and 
  sprinkling 
  the 
  millet, 
  caused 
  the 
  disease 
  to 
  spread. 
  We 
  have 
  had 
  no 
  rain 
  in 
  this 
  

   neighborhood 
  since 
  June 
  17, 
  if 
  I 
  remember 
  correctly. 
  The 
  depredations 
  of 
  chinch-bugs 
  are 
  always 
  

   more 
  serious 
  In 
  dry, 
  hot 
  weather. 
  Gratefully 
  yours, 
  J. 
  W. 
  G. 
  McCobmick. 
  

  

  The 
  field 
  experiments 
  were 
  apparently 
  equally 
  successful 
  in 
  the 
  months 
  of 
  July, 
  

   August, 
  and 
  September. 
  

  

  The 
  following 
  report 
  from 
  R. 
  L. 
  Staugaard 
  is 
  inserted, 
  as 
  being 
  of 
  a 
  more 
  scien- 
  

   tifically 
  circumstantial 
  character 
  than 
  most 
  of 
  the 
  other 
  reports: 
  

  

  Flobence, 
  Kas., 
  August 
  22, 
  1890. 
  

  

  Dear 
  Sib 
  : 
  In 
  reply 
  to 
  your 
  favor 
  of 
  July 
  27, 
  last 
  month, 
  would 
  say, 
  that 
  infected 
  bugs 
  were 
  ap- 
  

   plied 
  after 
  they 
  were 
  kept 
  with 
  live 
  ones 
  42 
  hours. 
  They 
  were 
  applied 
  as 
  follows: 
  

  

  Most 
  of 
  the 
  bugs 
  mixed 
  were 
  dead 
  when 
  taken 
  out 
  of 
  the 
  box. 
  They 
  were 
  applied 
  in 
  seven 
  differ- 
  

   ent 
  hills, 
  being 
  put 
  into 
  every 
  ninth 
  hill. 
  I 
  marked 
  every 
  hill 
  with 
  a 
  number, 
  so 
  as 
  to 
  be 
  better 
  able 
  to 
  

   watch 
  the 
  progress. 
  

  

  Examined 
  after 
  48 
  hours' 
  application", 
  with 
  the 
  following 
  results 
  : 
  No. 
  1, 
  mostly 
  dead 
  ; 
  No. 
  2, 
  

   mostly 
  alive 
  — 
  seemingly 
  very 
  restless 
  ; 
  No. 
  3, 
  bugs 
  seem 
  to 
  be 
  sick 
  ; 
  No. 
  4, 
  bugs 
  mostly 
  dead, 
  (on 
  hills 
  

   around 
  this, 
  bugs 
  seemed 
  restless;) 
  No. 
  5, 
  not 
  examined, 
  (on 
  hills 
  around 
  it 
  the 
  bugs 
  seemed 
  to 
  be 
  af- 
  

   fected.) 
  Examination 
  three 
  days 
  after 
  the 
  application, 
  with 
  the 
  following 
  results, 
  to 
  wit: 
  No 
  3, 
  bugs 
  

   seemingly 
  in 
  a 
  dying 
  condition, 
  (on 
  hills 
  around 
  it 
  the 
  bugs 
  seemed 
  to 
  be 
  well, 
  with 
  the 
  exception 
  of 
  one 
  

   hill, 
  where 
  they 
  seemed 
  to 
  be 
  dying, 
  and 
  some 
  dead 
  ; 
  ) 
  No. 
  4, 
  not 
  a 
  live 
  bug 
  in 
  the 
  hill 
  ; 
  No. 
  5, 
  appar- 
  

   ently 
  dying, 
  also 
  dying 
  in 
  the 
  hills 
  around 
  this 
  : 
  No. 
  6, 
  bugs 
  dying 
  in 
  the 
  hill 
  ; 
  No. 
  7, 
  apparently 
  not 
  

   dying. 
  

  

  On 
  August 
  16, 
  12 
  days 
  after 
  application, 
  I 
  found 
  the 
  bugs 
  to 
  be 
  dying 
  and 
  dead 
  all 
  through 
  the 
  

   field 
  (12 
  acres). 
  

  

  On 
  August 
  20, 
  I 
  again 
  found 
  the 
  bugs 
  to 
  be 
  dying 
  rapidly. 
  A 
  field 
  40 
  rods 
  distant 
  had 
  sure 
  marks 
  

   of 
  bugs 
  in 
  a 
  dying 
  condition. 
  What 
  I 
  mean 
  by 
  bugs 
  being 
  in 
  a 
  dying 
  condition 
  is 
  this, 
  they 
  lay 
  on 
  their 
  

   backs 
  almost 
  motionless, 
  and 
  others 
  lay 
  in 
  the 
  same 
  position 
  moving 
  limbs 
  violently. 
  

  

  This 
  remedy 
  was 
  applied 
  on 
  A. 
  G. 
  Rosiere's 
  farm, 
  on 
  Bruno 
  creek, 
  Marion 
  county, 
  Kansas, 
  being 
  

   nine 
  miles 
  east 
  and 
  three 
  miles 
  south 
  of 
  Marlon. 
  

  

  Thanking 
  you 
  for 
  your 
  favors, 
  I 
  remain, 
  Yours 
  truly, 
  R. 
  L. 
  Staugaabd. 
  

  

  The 
  laboratory 
  experiments 
  have 
  been 
  continued 
  through 
  the 
  season. 
  

  

  The 
  following 
  is 
  a 
  summary 
  of 
  the 
  results 
  of 
  the 
  field 
  experiments 
  in 
  the 
  season 
  

   of 
  1890: 
  

  

  Number 
  of 
  boxes 
  of 
  diseased 
  bugs 
  sent 
  out, 
  38; 
  7 
  of 
  these 
  lots 
  were 
  either 
  not 
  received, 
  or 
  received 
  

   and 
  not 
  used. 
  Reports 
  were 
  received 
  from 
  26 
  of 
  the 
  31 
  remaining 
  cases. 
  Of 
  these 
  26 
  reports, 
  3 
  were 
  

   unfavorable, 
  19 
  favorable, 
  and 
  4 
  doubtful, 
  concerning 
  the 
  success 
  of 
  the 
  experiment. 
  These 
  doubtful 
  

   cases 
  are 
  not 
  to 
  be 
  looked 
  upon 
  as 
  unfavorable, 
  but 
  more 
  evidence 
  is 
  needed 
  to 
  transfer 
  them 
  to 
  the 
  

   list 
  of 
  favorable 
  reports. 
  Thus 
  19 
  out 
  of 
  26 
  reports, 
  or 
  73 
  per 
  cent., 
  were 
  decidedly 
  favorable. 
  The 
  

   experiments 
  will 
  be 
  continued 
  during 
  the 
  season 
  of 
  1891. 
  

  

  