﻿Proceedings 
  of 
  the 
  fouuth 
  entomological 
  meeting 
  377 
  

  

  (4) 
  Strength 
  of 
  chemical 
  reactions 
  of 
  fruit 
  flies 
  . 
  — 
  Reference 
  has 
  already 
  

   been 
  made 
  (Scientific 
  Reports, 
  Pusa, 
  1919-20), 
  to 
  a 
  series 
  of 
  experiments 
  

   made 
  in 
  this 
  connexion 
  on 
  the 
  deterrent 
  effects 
  of 
  varying 
  quantities 
  

   of 
  certain 
  chemicals 
  mixed 
  with 
  a 
  fixed 
  quantity 
  of 
  methyl-eugenol, 
  

   the 
  substance 
  which 
  attracts 
  certain 
  species 
  of 
  Chatodacus. 
  Attempts 
  

   were 
  also 
  made 
  to 
  find 
  out 
  how 
  far 
  heat 
  would 
  ward 
  them 
  off 
  from 
  coming 
  

   to 
  methyl-eugenol, 
  by 
  exposing 
  a 
  quantity 
  of 
  mercury 
  in 
  an 
  electrically 
  

   heated 
  basin 
  over 
  which 
  was 
  kept 
  suspended 
  cotton 
  wool 
  scented 
  with 
  

   methyl-eugenol, 
  the 
  bulb 
  of 
  the 
  recording 
  thermometer 
  being 
  immersed 
  

   in 
  the 
  mercury. 
  It 
  was 
  observed 
  that 
  however 
  powerful 
  the 
  scent, 
  

   the 
  insects 
  would 
  hardly 
  come 
  to 
  it 
  if 
  the 
  mercury 
  was 
  sufficiently 
  hot 
  

   to 
  injure 
  them, 
  which 
  would 
  seem 
  to 
  indicate 
  the 
  necessity 
  of 
  modifying 
  

   our 
  views 
  that 
  the 
  scent 
  has 
  a 
  stupefying 
  effect 
  on 
  them. 
  

  

  HOWLETT, 
  F..M. 
  

  

  Sen, 
  S. 
  K. 
  

  

  Sharma, 
  H. 
  N. 
  

  

  Sharma, 
  H. 
  N. 
  and 
  Sen, 
  

   S. 
  K. 
  

  

  The 
  influence 
  of 
  temperature 
  upon 
  the 
  

   biting 
  of 
  mosquitos. 
  (Parasitology, 
  Dec- 
  

   ember 
  1910.) 
  

  

  The 
  effect 
  of 
  oil 
  of 
  citronella 
  on 
  two 
  species 
  

   of 
  Dacus. 
  (Trans. 
  Ent. 
  Soc. 
  London, 
  

   October 
  1912.) 
  

  

  A 
  trap 
  for 
  ThrijJs. 
  (Journ. 
  Eco. 
  Entom. 
  

   March 
  1914.) 
  

  

  Chemical 
  reactions 
  of 
  fruit 
  flies. 
  (Bull 
  

  

  Ent. 
  Res., 
  December 
  1915). 
  

   Observations 
  on 
  the 
  respiration 
  of 
  Culi- 
  

  

  cid88. 
  (Ind. 
  Journ. 
  Med. 
  Res., 
  1914.) 
  

   A 
  preliminary 
  note 
  on 
  the 
  role 
  of 
  blood 
  in 
  

  

  ovulation 
  in 
  Culicidse. 
  (Ind. 
  Jour. 
  Med. 
  

  

  Res., 
  1917.) 
  

  

  Beginnings 
  in 
  insect 
  physiology 
  and 
  their 
  

   economic 
  significance. 
  (Read 
  before 
  the 
  

   Fifth 
  Indian 
  Science 
  Congress, 
  published 
  

   in 
  Agrc. 
  Journ. 
  India, 
  October 
  1918.) 
  

  

  A 
  note 
  on 
  the 
  effects 
  of 
  mercurous 
  chloride 
  

   on 
  mosquito 
  larvae. 
  (Read 
  at 
  Fourth 
  

   Entl. 
  Meeting.) 
  

  

  A 
  preliminary 
  note 
  on 
  the 
  actions 
  of 
  acids, 
  

   salts 
  and 
  alkalies 
  on 
  the 
  development 
  

   of 
  Cvdicid 
  eggs 
  and 
  larvae. 
  (Read 
  at 
  

   Fourth 
  Entl. 
  Meeting.) 
  

  

  Oviposition 
  in 
  Culicidse. 
  (Read 
  at 
  Fourth 
  

   Entl. 
  Meeting.) 
  

  

  