﻿PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  

  

  235 
  

  

  1913. 
  Patton, 
  W. 
  S., 
  and 
  Cragg, 
  F. 
  W. 
  A 
  Textbook 
  of 
  Medical 
  Ento- 
  

   mology, 
  p. 
  364. 
  [Quote 
  Mitzmain's 
  results]. 
  

  

  1917. 
  Cross, 
  H. 
  E. 
  The 
  Camel 
  and 
  its 
  diseases, 
  pp.87-97, 
  ff. 
  35, 
  36. 
  

  

  1920. 
  Patton, 
  W. 
  S. 
  The 
  Gad 
  Flies 
  of 
  Mesopotamia. 
  {Ind. 
  Journ. 
  

   Med. 
  Res., 
  VII, 
  735-750). 
  

  

  1920. 
  Carpenter, 
  G. 
  D. 
  Hale. 
  A 
  Naturalist 
  on 
  Lake 
  Victoria. 
  

  

  1920. 
  Glaser, 
  R. 
  W. 
  Biological 
  studies 
  on 
  intracellular 
  Bacteria, 
  

   No. 
  1. 
  {Biol. 
  Bull. 
  Marine 
  Biol. 
  Lab. 
  Woods 
  Hole, 
  XXXIX, 
  

   133-145). 
  

  

  Have 
  any 
  observations 
  been 
  made 
  as 
  to 
  whether 
  Tabanidse 
  prefer 
  Mr. 
  Ballard. 
  

   already 
  infected 
  animals 
  to 
  healthy 
  ones 
  ? 
  It 
  is 
  so 
  in 
  the 
  case 
  of 
  other 
  

  

  flies. 
  

  

  No 
  ; 
  I 
  am 
  not 
  aware 
  of 
  any 
  such 
  observations. 
  _ 
  Mr. 
  Fletcher. 
  

  

  There 
  is 
  an 
  interesting 
  comparison 
  between 
  " 
  Surra 
  " 
  and 
  " 
  Sleeping 
  Mr. 
  Ballard. 
  

   sickness." 
  The 
  former 
  has 
  two 
  forms 
  according 
  to 
  Cross. 
  The 
  latter 
  

   has 
  two 
  forms 
  also 
  of 
  which 
  the 
  first 
  is 
  carried 
  by 
  Glossina 
  f 
  alkalis 
  

   and 
  kills 
  slowly 
  and 
  the 
  second 
  is 
  carried 
  by 
  G. 
  morsitans 
  and 
  kills 
  

   quickly. 
  Possibly 
  some 
  of 
  these 
  conflicting 
  observations 
  on 
  Surra 
  are 
  

   caused 
  by 
  their 
  being 
  really 
  two 
  forms 
  of 
  the 
  parasite, 
  with 
  separate 
  

  

  The 
  general 
  succeptibility 
  of 
  animals 
  is 
  a 
  very 
  difficult 
  matter 
  to 
  J^^ajj^f^jpj^gjg^ 
  

  

  I'udge 
  of. 
  _ 
  . 
  , 
  „ 
  ,, 
  

  

  Does 
  It 
  occur 
  on 
  my 
  side 
  of 
  India 
  ? 
  * 
  Major 
  deMello. 
  

  

  It 
  is 
  recorded 
  from 
  Bombay 
  and 
  Kalyan, 
  but 
  I 
  thmk 
  those 
  were 
  Mr. 
  White. 
  

  

  imported 
  cases. 
  

  

  You 
  can 
  at 
  least 
  all 
  help 
  this 
  investigation 
  by 
  sending 
  us 
  in 
  specmiens 
  Mr. 
  Fletcher, 
  

   of 
  your 
  local 
  Tabanidse. 
  We 
  have 
  a 
  large 
  number 
  here 
  but 
  our 
  series 
  

   of 
  specimens 
  is 
  very 
  incomplete 
  in 
  regard 
  to 
  distribution 
  both 
  in 
  space 
  

  

  i-1 
  n 
  fi 
  T 
  1 
  TT1 
  f* 
  

  

  With 
  regard 
  to 
  the 
  question 
  of 
  Fly 
  Survey, 
  should 
  this 
  survey 
  be 
  Mr. 
  Sen. 
  

   carried 
  out 
  with 
  special 
  reference 
  to 
  Tabanid^ 
  or 
  of 
  biting 
  flies 
  gene- 
  

   rally 
  ? 
  I 
  think 
  the 
  consensus 
  of 
  opinion 
  points 
  towards 
  Tabanids 
  

   being 
  the 
  carrying 
  agency, 
  Gunn 
  {Quarterly 
  Journ. 
  of 
  Yety.^ 
  Science,^ 
  

   im, 
  quoted 
  by 
  Lingard) 
  pointing 
  out 
  for 
  the 
  first 
  time 
  that 
  " 
  Surra 
  " 
  

   was 
  associated 
  with 
  the 
  presence 
  of 
  collections 
  of 
  water, 
  the 
  disease 
  

   being 
  specially 
  found 
  in 
  grass-cutters' 
  ponies. 
  

  

  We 
  recommend 
  a 
  general 
  survey 
  of 
  biting 
  flies 
  to 
  start 
  with 
  but 
  I 
  Mr. 
  Fletcher, 
  

   expect 
  that 
  later 
  on 
  it 
  would 
  narrow 
  down 
  to 
  Tabanidse. 
  

  

  