﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  33 
  1 
  

  

  almost 
  without 
  a 
  consciousness 
  of 
  pain. 
  Thus 
  the 
  rapacious 
  dragon- 
  

   fly 
  — 
  the 
  hawk 
  of 
  the 
  insect 
  world 
  — 
  would 
  quite 
  as 
  readily 
  eat 
  its 
  own 
  

   abdomen, 
  as 
  actual 
  experiment 
  has 
  shown, 
  could 
  it 
  conveniently 
  be 
  

   brought 
  within 
  range 
  of 
  its 
  powerful 
  jaws, 
  as 
  to 
  indulge 
  in 
  its 
  favorite 
  

   and 
  ordinary 
  mosquito 
  diet. 
  

  

  Newspaper 
  authority 
  — 
  not 
  always 
  the 
  best 
  in 
  matters 
  of 
  science 
  — 
  

   has 
  lately 
  (last 
  year) 
  given 
  us 
  another 
  mosquito 
  " 
  boom," 
  in 
  the 
  an- 
  

   nouncement 
  of 
  the 
  discovery 
  that 
  the 
  Cuban 
  mosquito 
  was 
  about 
  to 
  

   signalize 
  a 
  great 
  advance 
  in 
  the 
  science 
  of 
  Therapeutics 
  — 
  to 
  serve 
  no 
  

   less 
  a 
  purpose 
  than 
  an 
  effectual 
  preventive 
  of 
  the 
  fearful 
  disease 
  of 
  yellow 
  

   fever. 
  The 
  method 
  of 
  protection 
  was 
  simple 
  in 
  the 
  extreme. 
  A 
  bottled 
  

   mosquito 
  must 
  be 
  applied 
  to 
  the 
  person 
  of 
  a 
  yellow 
  fever 
  patient 
  and 
  

   permitted 
  to 
  imbibe 
  a 
  little 
  of 
  his 
  blood. 
  Transferred, 
  after 
  a 
  few 
  hours, 
  

   to 
  the 
  arm 
  of 
  the 
  individual 
  to 
  be 
  protected, 
  the 
  virus 
  received 
  would 
  be 
  

   conveyed 
  with 
  or 
  through 
  the 
  proboscis, 
  and 
  a 
  successful 
  and 
  complete 
  

   vaccination 
  against 
  yellow 
  fever 
  will 
  be 
  accomplished. 
  

  

  The 
  Mosquito 
  as 
  a 
  Filaria 
  Host. 
  

  

  If 
  the 
  above 
  be 
  only 
  a 
  fanciful 
  conception 
  of 
  some 
  '* 
  newspaper 
  man," 
  

   as 
  it 
  possibly 
  may 
  be, 
  the 
  fact 
  that 
  the 
  mosquito 
  may 
  communicate 
  dis- 
  

   ease, 
  or 
  aid 
  in 
  its 
  distribution, 
  rests 
  on 
  a 
  scientific 
  basis. 
  Some 
  recent 
  

   anatomical 
  investigations 
  of 
  a 
  species 
  known 
  as 
  Culex 
  mosquito 
  inhabit- 
  

   ing 
  tropical 
  regions, 
  have 
  shown 
  it 
  as 
  serving 
  a 
  most 
  unexpected 
  purpose 
  

   in 
  acting 
  as 
  an 
  intermediary 
  host 
  in 
  the 
  life-development 
  of 
  a 
  thread- 
  

   like 
  worm, 
  — 
  a 
  species 
  of 
  ^//ar/^. 
  This 
  hsematozoon, 
  bearing 
  the 
  name 
  

   oi 
  Filaria 
  sanguiftis-hominis, 
  is 
  found 
  in 
  its 
  immature 
  or 
  larval 
  stage 
  in 
  the 
  

   blood 
  of 
  persons 
  afflicted 
  with 
  elephantiasis 
  and 
  some 
  of 
  the 
  allied 
  dis- 
  

   eases 
  which 
  are 
  endemic 
  over 
  the 
  more 
  thickly 
  populated 
  tropical 
  por- 
  

   tions 
  of 
  the 
  world. 
  

  

  Before 
  the 
  filariae 
  can 
  undergo 
  their 
  full 
  development 
  they 
  have 
  to 
  

   enter 
  some 
  other 
  organism 
  quite 
  different 
  from 
  that 
  occupied 
  by 
  their 
  

   larvae. 
  The 
  female 
  mosquito 
  above 
  named 
  (and 
  probably 
  other 
  species 
  

   also) 
  acts 
  as 
  the 
  host 
  in 
  this 
  instance. 
  As 
  she 
  drinks 
  the 
  blood 
  of 
  the 
  

   diseased 
  person, 
  she 
  imbibes 
  with 
  it 
  the 
  larval 
  filariae. 
  Within 
  her 
  abdo- 
  

   men 
  they 
  undergo 
  further 
  transformations. 
  Six 
  distinct 
  stages 
  have 
  been 
  

   recognized 
  within 
  her. 
  As 
  she 
  returns 
  to 
  the 
  water 
  for 
  the 
  deposit 
  of 
  

   her 
  eggs 
  — 
  with 
  her 
  death 
  occurring 
  soon 
  after 
  oviposition, 
  the 
  filariae 
  

   which 
  she 
  bears 
  in 
  their 
  perfected 
  stage, 
  are 
  consigned 
  to 
  the 
  water. 
  In 
  

   drinking 
  the 
  water, 
  the 
  parasites 
  are 
  received 
  into 
  the 
  human 
  stomach, 
  

   from 
  which 
  they 
  pass 
  to, 
  and 
  enter, 
  the 
  lymphatic 
  vessels, 
  and 
  by 
  their 
  

  

  