﻿204 
  PEOCEEDI^fG.S 
  OF 
  THE 
  FOURTH 
  ENTO.MOLOGICAL 
  MEETING 
  

  

  Results 
  obtained 
  with 
  Caustic 
  Potash, 
  

  

  Percent. 
  Results. 
  

  

  1-0 
  . 
  • 
  . 
  . 
  Eggs 
  did 
  not 
  hatch. 
  

  

  0-6 
  . 
  . 
  . 
  Eggs 
  did 
  not 
  hatch. 
  (In 
  one 
  experiment 
  hatched 
  

  

  partially 
  but 
  all 
  larvae 
  died 
  before 
  complete 
  emer- 
  

   gence). 
  

  

  0-5 
  . 
  . 
  . 
  Eggs 
  did 
  not 
  hatch. 
  

  

  0-25 
  . 
  . 
  . 
  Eggs 
  hatched 
  but 
  all 
  larvae 
  died 
  within 
  48 
  hours 
  

  

  By 
  looking 
  at 
  the 
  table 
  No. 
  4 
  it 
  would 
  appear 
  that 
  in 
  1-0 
  per 
  cent. 
  Caustic 
  

   soda 
  the 
  eggs 
  hatched 
  but 
  the 
  larvae 
  died 
  within 
  24 
  hours 
  but 
  in 
  the 
  case 
  

   of 
  Caustic 
  potash 
  eggs 
  did 
  not 
  hatch 
  at 
  all 
  in 
  1-0 
  per 
  cent., 
  0-6 
  per 
  cent, 
  

   and 
  0-5 
  per 
  cent. 
  This 
  shows 
  that 
  the 
  toxicity 
  of 
  Potassium 
  hydroxide 
  

   is 
  far 
  greater 
  than 
  that 
  of 
  Sodium 
  hydroxide 
  of 
  the 
  same 
  strength. 
  

  

  In 
  conclusion, 
  the 
  preliminary 
  character 
  of 
  my 
  experiments 
  may 
  

   again 
  be 
  emphasized. 
  Final 
  conclusions 
  can 
  not 
  be 
  drawn, 
  at 
  least 
  with 
  

   any 
  degree 
  of 
  satisfaction 
  from 
  laboratory 
  experiments 
  alone. 
  These 
  

   should 
  obviously 
  be 
  followed 
  by 
  field 
  experiments 
  under 
  natural 
  condi' 
  

   tions. 
  

  

  The 
  general 
  results 
  are 
  intended 
  to 
  give 
  some 
  clue 
  as 
  to 
  possible 
  

   lines 
  upon 
  which 
  this 
  investigation 
  may 
  profitably 
  be 
  pursued. 
  

  

  „ 
  . 
  ph 
  • 
  t 
  . 
  In 
  this 
  respect 
  X 
  have 
  noticed 
  an 
  interesting 
  point. 
  When 
  bamboos 
  

  

  phers. 
  are 
  cut 
  the 
  juice 
  exudes 
  into 
  the 
  contained 
  rain 
  water 
  and 
  the 
  result 
  is 
  a 
  

  

  fermenting 
  mass 
  containing 
  alcohol. 
  This 
  is 
  very 
  suitable 
  for 
  the 
  

   development 
  of 
  Leicesteria 
  larvae. 
  Did 
  you 
  try 
  alcohol 
  ? 
  

   Mr. 
  Sharma. 
  No. 
  

  

  