﻿130 
  CONTAGIOUS 
  DISEASES 
  OF 
  THE 
  CHINCH-BUG. 
  

  

  No. 
  487. 
  William 
  Leith, 
  Kirkwood, 
  Fond 
  du 
  Lac 
  county, 
  Wisconsin. 
  Infection 
  

   sent 
  July 
  20th; 
  experiment 
  successful, 
  as 
  reported 
  August 
  2d: 
  "I 
  put 
  the 
  bugs 
  in 
  a 
  

   field 
  of 
  19 
  acres 
  of 
  spring 
  wheat 
  on 
  the 
  24th. 
  The 
  weather 
  has 
  been 
  dry, 
  with 
  the 
  

   exception 
  of 
  a 
  light 
  shower 
  on 
  the 
  evening 
  of 
  the 
  29th. 
  I 
  visited 
  the 
  field 
  on 
  the 
  

   29th, 
  and 
  the 
  bugs 
  seemed 
  to 
  be 
  about 
  as 
  usual. 
  I 
  again 
  visited 
  the 
  field 
  on 
  Satur- 
  

   day, 
  August 
  1st, 
  and 
  the 
  bugs 
  were 
  nearly 
  all 
  dead 
  where 
  I 
  put 
  the 
  infected 
  bugs. 
  

   I 
  again 
  visited 
  the 
  field 
  this 
  morning, 
  and 
  the 
  bugs 
  were 
  all 
  dead 
  where 
  the 
  infected 
  

   ones 
  were 
  scattered. 
  I 
  then 
  went 
  to 
  another 
  part 
  of 
  the 
  field, 
  about 
  20 
  rods 
  from 
  

   where 
  the 
  infected 
  bugs 
  were 
  placed, 
  and 
  found 
  some 
  bugs 
  dead 
  and 
  others 
  sluggish 
  

   and 
  apparently 
  sick." 
  Reported 
  later: 
  "On 
  one 
  field 
  of 
  wheat 
  of 
  14 
  acres 
  the 
  yield 
  

   was 
  19^ 
  bushels 
  per 
  acre, 
  and 
  I 
  think 
  the 
  chinch-bugs 
  would 
  have 
  nearly 
  cleaned 
  it 
  

   out." 
  

  

  No. 
  488. 
  Wm. 
  W. 
  Hall, 
  Markesan, 
  Green 
  Lake 
  county, 
  Wisconsin. 
  Applied 
  for 
  

   aid 
  July 
  22d: 
  "Bugs 
  are 
  doing 
  much 
  damage." 
  Infection 
  sent 
  July 
  27th; 
  experi- 
  

   ment 
  unsuccessful, 
  as 
  reported 
  November 
  4th: 
  "At 
  the 
  end 
  of 
  24 
  hours 
  I 
  put 
  in- 
  

   fected 
  bugs 
  in 
  the 
  corn 
  where 
  the 
  bugs 
  were 
  thick 
  on 
  the 
  corn 
  and 
  moving 
  about 
  on 
  

   the 
  ground, 
  and 
  again 
  at 
  the 
  end 
  of 
  48 
  hours, 
  and 
  several 
  times 
  after, 
  but 
  did 
  not 
  

   notice 
  any 
  difference 
  with 
  the 
  bugs 
  in 
  the 
  field." 
  

  

  No. 
  489. 
  A. 
  Babtel, 
  Lake 
  Mills, 
  Jefferson 
  county, 
  Wisconsin. 
  Infection 
  sent 
  

   July 
  11th; 
  experiment 
  unsuccessful, 
  as 
  reported 
  January 
  6th: 
  "The 
  infection 
  was 
  

   of 
  no 
  help. 
  After 
  two 
  weeks 
  there 
  were 
  no 
  dead 
  ones. 
  The 
  fields 
  were 
  all 
  destroyed 
  

   by 
  the 
  bugs, 
  and 
  I 
  had 
  to 
  cut 
  the 
  grain 
  for 
  hay." 
  

  

  No. 
  490. 
  A. 
  J. 
  Humphrey, 
  Waterloo, 
  Jefferson 
  county, 
  Wisconsin. 
  Infection 
  sent 
  

   June 
  24th 
  and 
  July 
  8th; 
  experiment 
  successful, 
  as 
  reported 
  July 
  16th: 
  "Until 
  the 
  

   14th 
  I 
  could 
  not 
  see 
  anything 
  that 
  looked 
  favorable. 
  The 
  first 
  lot 
  had 
  no 
  effect 
  that 
  

   I 
  could 
  discover, 
  but 
  the 
  second 
  lot 
  is 
  showing 
  up 
  quite 
  favorable. 
  There 
  are 
  

   bunches 
  of 
  dead 
  bugs 
  around 
  where 
  the 
  diseased 
  bugs 
  were 
  placed, 
  and 
  the 
  patches 
  

   are 
  getting 
  larger." 
  

  

  No. 
  491. 
  H. 
  B. 
  Smith, 
  Harvey, 
  Jefferson, 
  county, 
  Wisconsin. 
  Infection 
  sent 
  July 
  

   27th; 
  experiment 
  undoubtedly 
  successful, 
  as 
  reported 
  December 
  11th: 
  "I 
  distributed 
  

   the 
  infected 
  bugs 
  along 
  the 
  entire 
  front 
  of 
  a 
  16-acre 
  field 
  of 
  millet 
  which 
  was 
  then 
  

   about 
  four 
  to 
  six 
  inches 
  high, 
  but 
  before 
  I 
  got 
  to 
  work 
  with 
  the 
  bugs 
  they 
  had 
  already 
  

   destroyed 
  a 
  strip 
  of 
  millet 
  one 
  to 
  five 
  rods 
  wide 
  the 
  entire 
  length 
  of 
  the 
  field 
  which 
  

   lay 
  next 
  to 
  25 
  acres 
  of 
  buggy 
  barley. 
  At 
  the 
  same 
  time 
  I 
  put 
  the 
  infection 
  out, 
  I 
  

   plowed 
  a 
  deep 
  ditch 
  some 
  20 
  feet 
  back 
  in 
  the 
  good 
  millet 
  not 
  yet 
  affected, 
  thus 
  giving 
  

   them 
  sufficient 
  food 
  to 
  last 
  a 
  few 
  days 
  on 
  the 
  outside 
  of 
  the 
  furrow. 
  During 
  the 
  first 
  

   three 
  or 
  four 
  days 
  I 
  could 
  not 
  discover 
  their 
  ravages 
  were 
  impeded, 
  but 
  all 
  of 
  a 
  sud- 
  

   den 
  they 
  seemed 
  to 
  stop 
  eating, 
  stop 
  working, 
  and 
  did 
  not 
  even 
  devour 
  what 
  little 
  

   food 
  I 
  had 
  left 
  for 
  them 
  on 
  the 
  outside 
  of 
  the 
  furrow, 
  although 
  they 
  were 
  constantly 
  

   reinforced 
  every 
  day 
  for 
  a 
  week 
  or 
  10 
  days 
  from 
  out 
  of 
  the 
  grain 
  field. 
  Now, 
  I 
  am 
  

   not 
  fully 
  prepared 
  to 
  assert 
  or 
  even 
  admit 
  that 
  the 
  infected 
  bugs 
  did 
  all 
  the 
  work 
  in 
  

   arresting 
  their 
  progress 
  any 
  farther 
  into 
  the 
  field, 
  for 
  it 
  happened 
  to 
  be 
  just 
  at 
  the 
  

   time 
  of 
  the 
  year 
  when 
  by 
  nature 
  they 
  do 
  suddenly 
  stop 
  working, 
  and 
  that 
  has 
  been, 
  

   my 
  experience 
  from 
  observation 
  in 
  years 
  past, 
  but 
  I 
  will 
  admit 
  that 
  their 
  final 
  disap- 
  

   pearance 
  ivas 
  truly 
  a 
  mystery. 
  Although 
  the 
  weather 
  was 
  warm 
  and 
  dry, 
  I 
  had 
  

   thought, 
  from 
  their 
  habits 
  in 
  the 
  past, 
  that 
  they 
  might 
  have 
  worked 
  in 
  the 
  field 
  some 
  

   two 
  weeks 
  longer." 
  

  

  No. 
  492. 
  H. 
  B. 
  Stokes, 
  Waterloo. 
  Jefferson 
  county, 
  Wisconsin. 
  Infection 
  sent 
  

   April 
  29th, 
  June 
  2d, 
  and 
  June 
  27th; 
  experiment 
  successful, 
  as 
  reported 
  October 
  12th: 
  

   " 
  My 
  experiment 
  was 
  favorable. 
  The 
  bugs 
  did 
  not 
  die 
  in 
  the 
  grain 
  fields 
  very 
  much, 
  

   but 
  they 
  died 
  after 
  they 
  got 
  in 
  the 
  corn. 
  On 
  one 
  end 
  of 
  the 
  field 
  they 
  died 
  with 
  the 
  

  

  