﻿40 
  

  

  age 
  part 
  of 
  the 
  furrow 
  around 
  the 
  field 
  and 
  carefully 
  collecting 
  and 
  

   measuring 
  all 
  tlu» 
  chinch-bugs 
  accumulated 
  in 
  it, 
  it 
  was 
  determined 
  

   that 
  the 
  entire 
  mass 
  of 
  bugs 
  killed 
  in 
  this 
  ten 
  days' 
  contest 
  would 
  

   measure 
  not 
  less 
  than 
  twelve 
  bushels. 
  Taking 
  into 
  account 
  the 
  fact 
  

   that 
  these 
  were 
  the 
  first 
  generation 
  of 
  the 
  year, 
  and 
  that 
  if 
  they 
  had 
  

   lived 
  they 
  would 
  have 
  bred 
  a 
  second 
  generation 
  in 
  the 
  corn, 
  and 
  the 
  

   further 
  fact 
  that 
  each 
  female 
  chinch-bug 
  lays 
  a 
  hundred 
  eggs 
  or 
  

   more, 
  it 
  will 
  be 
  seen 
  that 
  an 
  important 
  benefit 
  to 
  this 
  farmer 
  and 
  to 
  

   the 
  owners 
  of 
  adjacent 
  fields 
  was 
  done 
  by 
  this 
  work. 
  This 
  place 
  

   was, 
  in 
  fact, 
  visited 
  in 
  the 
  fall 
  of 
  1895 
  by 
  Professors 
  Burrill 
  and 
  

   ]3aveni)ort, 
  of 
  the 
  University 
  of 
  Illinois, 
  and 
  by 
  them 
  the 
  report 
  was 
  

   made 
  that 
  Mr. 
  Quade 
  grew 
  a 
  full 
  crop 
  of 
  good 
  corn 
  in 
  the 
  protected 
  

   field 
  adjacent 
  to 
  this 
  wheat, 
  all 
  of 
  which 
  he 
  owed 
  to 
  our 
  experimental 
  

   operations, 
  and 
  that 
  other 
  corn 
  fields 
  on 
  his 
  plase, 
  not 
  so 
  protected 
  

   but 
  exposed 
  to 
  invasion 
  by 
  chinch-bugs 
  from 
  other 
  fields 
  of 
  wheat, 
  

   were 
  almost 
  completely 
  destroyed, 
  some 
  of 
  them 
  averaging 
  not 
  more 
  

   than 
  two 
  or 
  three 
  bushels 
  per 
  acre 
  of 
  very 
  poor 
  corn. 
  It 
  should 
  

   further 
  be 
  said 
  that 
  the 
  expense 
  of 
  the 
  work 
  done 
  in 
  and 
  about 
  this 
  

   field 
  of 
  wheat 
  in 
  this 
  (contest 
  with 
  the 
  chinch-bug 
  was 
  less 
  than 
  $5, 
  

   omitting, 
  of 
  course, 
  traveling 
  expenses 
  and 
  the 
  cost 
  of 
  materials 
  not 
  

   used, 
  and 
  taking 
  no 
  account 
  of 
  the 
  value 
  of 
  the 
  labor 
  of 
  the 
  owner 
  

   of 
  the 
  land. 
  In 
  shorf, 
  the 
  success 
  of 
  this 
  Jield 
  experime 
  nt 
  , 
  ivied 
  

   under 
  very 
  dif/iciilf. 
  conditions, 
  ivas 
  suhstanficdiy 
  complete, 
  and 
  the 
  

   valne 
  of 
  this 
  method 
  of 
  contest 
  with 
  the 
  chincli-hiKj 
  seems 
  established 
  

   hey 
  on 
  d 
  cont 
  rovers 
  if 
  . 
  

  

  The 
  Georgefoirn 
  Campaicpt. 
  -In 
  the 
  vicinity 
  of 
  (ireorgetown, 
  in 
  

   Vermilion 
  county, 
  in 
  June, 
  IBIK), 
  a 
  number 
  of 
  farms 
  were 
  heavily 
  in- 
  

   fested 
  with 
  chinch-bugs 
  which 
  came 
  out 
  of 
  the 
  wheat 
  and 
  rye 
  at 
  

   harvest 
  time 
  and 
  accumulated 
  as 
  usual 
  upon 
  the 
  lower 
  parts 
  of 
  the 
  

   stalks 
  of 
  corn. 
  The 
  owners 
  of 
  these 
  farms 
  undertook 
  a 
  determined 
  

   contest 
  with 
  their 
  insect 
  invaders 
  for 
  the 
  preservation 
  of 
  their 
  corn, 
  

   using 
  only 
  the 
  coal-tar 
  and 
  post-hole 
  barrier, 
  with 
  some 
  slight 
  modi- 
  

   fications. 
  The 
  ground 
  was 
  prepared 
  for 
  the 
  coal-tar 
  line 
  by 
  hitch- 
  

   ing 
  a 
  team 
  to 
  a 
  heavy 
  plank 
  and 
  running 
  this 
  over 
  the 
  ground 
  once 
  

   or 
  twice, 
  weighted 
  with 
  three 
  or 
  four 
  men, 
  until 
  a 
  smooth, 
  hard 
  sur- 
  

   face 
  had 
  thus 
  been 
  made 
  to 
  receive 
  the 
  tar. 
  Or, 
  if 
  the 
  barrier 
  was 
  to 
  

   be 
  made 
  in 
  sod, 
  a 
  furrow 
  was 
  jjlowed 
  and 
  the 
  plank 
  was 
  dragged 
  in 
  

   the 
  bottom 
  of 
  the 
  furrow 
  to 
  pack 
  and 
  smooth 
  the 
  earth. 
  Either 
  be- 
  

   fore 
  or 
  after 
  the 
  tar 
  lines 
  were 
  run, 
  post-holes, 
  cans, 
  or 
  jars 
  were 
  

   sunk 
  close 
  to 
  it 
  at 
  intervals 
  of 
  a 
  few 
  feet. 
  Leaders 
  or 
  switch 
  lines 
  

   of 
  coal-tar 
  were 
  in 
  some 
  instances 
  laid 
  to 
  these 
  holes 
  or 
  cans, 
  as 
  

   shown 
  in 
  the 
  diagram 
  on 
  the 
  next 
  page. 
  

  

  The 
  scene 
  of 
  these 
  operations 
  was 
  visited 
  by 
  the 
  editor 
  of 
  the 
  

   "Danville 
  News," 
  from 
  whose 
  interesting 
  report 
  this 
  account 
  is 
  con- 
  

   densed. 
  "Care 
  must 
  be 
  had," 
  he 
  says, 
  "to 
  the 
  following 
  details:'' 
  

  

  "]. 
  Make 
  the 
  ground 
  smooth. 
  

  

  "2. 
  Look 
  over 
  it 
  often 
  for 
  breaks, 
  or 
  any 
  blade 
  or 
  article 
  that 
  

   may 
  fall 
  across 
  the 
  line, 
  or 
  for 
  cracks 
  in 
  the 
  ground. 
  The 
  bugs 
  

   cross 
  even 
  on 
  a 
  stalk 
  of 
  grass 
  that 
  lies 
  across 
  the 
  tar 
  line. 
  

  

  