﻿PROCEEDINGS 
  OF 
  THE 
  FOITRTH 
  ENTOlStOLOGlCAL 
  MEETING 
  177 
  

  

  seers 
  of 
  the 
  substance 
  in 
  half 
  a 
  seer 
  of 
  water. 
  Both 
  the 
  solutions 
  were 
  

   thoroughly 
  mixed 
  and 
  then 
  heated 
  to 
  ensure 
  thorough 
  admixture. 
  Then 
  

   this 
  mixture 
  was 
  sifted 
  gradually 
  over 
  fifteen 
  seers 
  of 
  gram 
  or 
  wheat 
  

   which 
  had 
  been 
  previously 
  moistened. 
  The 
  poison 
  was 
  allowed 
  to 
  soak 
  

   in 
  the 
  grains 
  for 
  some 
  12 
  hours. 
  

  

  Some 
  half 
  chhittack 
  of 
  the 
  thus 
  prepared 
  bait 
  were 
  put 
  in 
  every 
  rat 
  

   burrow 
  which 
  was 
  subsequently 
  closed 
  and 
  was 
  watched 
  next 
  morning. 
  

   If 
  it 
  remained 
  closed 
  until 
  then, 
  its 
  occupant 
  was 
  taken 
  to 
  be 
  dead. 
  

  

  As 
  'will 
  be 
  clear 
  from 
  detailed 
  observations, 
  with 
  strychaine 
  some 
  

   89 
  to 
  90 
  per 
  cent, 
  of 
  the 
  treated 
  burrows 
  remained 
  closed. 
  The 
  cost 
  

   on 
  an 
  average 
  was 
  one 
  anna 
  for 
  eight 
  burrows, 
  excluding 
  of 
  course 
  the 
  

   cost 
  of 
  labour. 
  

  

  Great 
  care 
  should 
  be 
  taken 
  in 
  the 
  use 
  of 
  this 
  poison. 
  A 
  few 
  crystals 
  

   will 
  kill 
  even 
  man. 
  So 
  when 
  strychnine 
  is 
  being 
  used, 
  domestic 
  animals, 
  

   poultry, 
  etc., 
  should 
  not 
  be 
  allowed 
  to 
  leave 
  their 
  pens. 
  Baits 
  should 
  

   be 
  very 
  carefully 
  handled 
  and 
  placed 
  deep 
  down 
  in 
  the 
  burrows. 
  Satis- 
  

   factory 
  arrangements 
  must 
  be 
  made 
  for 
  the 
  disposal 
  of 
  dead 
  rats, 
  which 
  

   die 
  in 
  large 
  numbers 
  outside 
  their 
  burrows. 
  If 
  rats 
  dead 
  of 
  this 
  poison 
  

   be 
  eaten 
  by 
  any 
  other 
  animal, 
  the 
  latter 
  is 
  sure 
  to 
  die. 
  

  

  Plaster 
  of 
  Paris. 
  The 
  poisoned 
  bait 
  was 
  prepared 
  just 
  like 
  "the 
  

   strychnine 
  bait, 
  solutions 
  were 
  made 
  of 
  Plaster 
  and 
  sugar 
  in 
  separate 
  

   vessels, 
  both 
  were 
  mixed 
  and 
  sifted 
  over 
  the 
  suitable 
  grain 
  which 
  had 
  

   been 
  previously 
  moistened. 
  One 
  pound 
  of 
  the 
  Plaster 
  was 
  used 
  with 
  

   15 
  seers 
  of 
  gram 
  or 
  wheat. 
  One 
  seer 
  of 
  sugar 
  was 
  added 
  simply 
  to 
  make 
  

   the 
  bait 
  more 
  attractive. 
  

  

  The 
  results 
  obtained 
  with 
  this 
  poison 
  were 
  good. 
  On 
  an 
  average 
  

   78 
  to 
  80 
  per 
  cent, 
  of 
  the 
  treated 
  burrows 
  remained 
  closed, 
  thereby 
  indicat- 
  

   ing 
  that 
  the 
  occupants 
  were 
  dead 
  inside. 
  

  

  The 
  poison 
  is 
  fairly 
  cheap 
  and 
  the 
  cost 
  for 
  treating 
  15 
  burrows 
  is 
  

   only 
  one 
  anna. 
  If 
  a 
  large 
  number 
  of 
  burrows 
  is 
  taken 
  in 
  hand 
  at 
  a 
  time, 
  

   the 
  cost 
  will 
  be 
  still 
  less. 
  

  

  Arsenous 
  Acid. 
  This 
  poison 
  is 
  harmful 
  to 
  man 
  and 
  domesticated 
  

   animals, 
  so 
  it 
  should 
  be 
  carefully 
  used. 
  

  

  The 
  poisoned 
  bait 
  was 
  prepared 
  just 
  as 
  in 
  the 
  case 
  of 
  strychnine 
  

   and 
  Plaster 
  of 
  Paris. 
  Four 
  chhitaks 
  of 
  the 
  poison 
  were 
  mixed 
  with 
  15 
  

   seers 
  of 
  the 
  suitable 
  grain 
  and 
  a 
  little 
  sugar 
  was 
  added. 
  

  

  The 
  results 
  obtained 
  were 
  very 
  fair, 
  though 
  not 
  so 
  good 
  as 
  with 
  

   strychnine 
  and 
  plaster. 
  On 
  an 
  average 
  74 
  per 
  cent, 
  of 
  the 
  treated 
  bur- 
  

   rows 
  remained 
  closed. 
  

  

  Flour 
  pills 
  (one 
  part 
  poison 
  to 
  six 
  parts 
  flour) 
  of 
  the 
  poison 
  were 
  

   tried 
  ; 
  they 
  did 
  not 
  attract 
  many 
  rats, 
  and 
  most 
  of 
  them 
  remained 
  

   uneaten. 
  Forty-two 
  per 
  cent, 
  of 
  the 
  burrows 
  remained 
  closed. 
  

  

  