﻿202 
  I'llOCEEDINGS 
  OF 
  THE 
  FOUKTII 
  ENTOMOLOGICAL 
  MEETING 
  

  

  5. 
  Larvae 
  hatched 
  but 
  did 
  not 
  attain 
  complete 
  maturity. 
  

  

  As 
  regards 
  Sodium 
  chloride 
  0-74 
  per 
  cent, 
  out 
  of 
  57 
  larva?, 
  originally 
  hatched, 
  only 
  

   2 
  survived 
  up 
  to 
  23rd 
  day. 
  Out 
  of 
  these 
  one 
  died 
  on 
  the 
  24th 
  day 
  and 
  the 
  remaining 
  

   one 
  pupated 
  and 
  died 
  on 
  the 
  25th 
  day. 
  

  

  Series 
  B. 
  

  

  6. 
  Life 
  cycle 
  complete. 
  

  

  In 
  Series 
  B 
  as 
  the 
  table 
  shows 
  the 
  quickest 
  larval 
  development 
  took 
  

   place 
  in 
  Sodium 
  tartrate 
  0-5 
  per 
  cent,, 
  the 
  slowest 
  development 
  in 
  Pot- 
  

   assium 
  chloride 
  and 
  the 
  average 
  development 
  in 
  water, 
  Potassium 
  citrate 
  

   0-5 
  per 
  cent, 
  and 
  Salicylic 
  acid 
  0-001 
  per 
  cent. 
  

  

  The 
  most 
  interesting 
  and 
  important 
  fact 
  is 
  that 
  the 
  list 
  of 
  substances 
  

   in 
  which 
  either 
  the 
  eggs 
  did 
  not 
  hatch 
  or 
  the 
  larvsG 
  died 
  soon 
  after 
  hatch- 
  

  

  