﻿344 
  A. 
  T. 
  STANTON. 
  

  

  It 
  is 
  thought 
  probable 
  that 
  a 
  survey 
  of 
  the 
  ports 
  of 
  China 
  and 
  apan 
  would 
  

   show 
  that 
  the 
  conditions 
  there 
  are 
  unfavourable 
  for 
  the 
  propagation 
  of 
  S. 
  fasciata 
  

   even 
  in 
  the 
  warmer 
  months. 
  

  

  If 
  this 
  supposition 
  should 
  prove 
  correct 
  it 
  would 
  be 
  shown 
  that 
  the 
  path 
  for 
  the 
  

   conveyance 
  of 
  yellow 
  fever 
  infection 
  to 
  the 
  Orient 
  is 
  cut 
  at 
  this 
  point. 
  It 
  is 
  therefore 
  

   important 
  that 
  a 
  survey 
  of 
  these 
  ports 
  should 
  be 
  undertaken 
  in 
  completion 
  of 
  the 
  

   observations 
  here 
  recorded. 
  

  

  3. 
  Systematic 
  observations 
  on 
  a 
  number 
  of 
  ships 
  within 
  the 
  tropical 
  belt 
  failed 
  

   to 
  disclose 
  the 
  presence 
  of 
  S. 
  fasciata 
  on 
  board 
  ships 
  at 
  sea, 
  even 
  when 
  coming 
  from 
  

   ports 
  heavily 
  infested 
  with 
  this 
  mosquito. 
  It 
  is 
  suggested 
  that 
  too 
  much 
  importance 
  

   has 
  hitherto 
  been 
  attached 
  to 
  the 
  possibility 
  of 
  the 
  conveyance 
  of 
  infected 
  mosquitos 
  

   over 
  long 
  distances 
  in 
  ships, 
  and 
  that 
  with 
  modern 
  steel 
  ships 
  the 
  danger 
  is 
  minimal. 
  

  

  4. 
  With 
  the 
  prospective 
  increase 
  in 
  sea-borne 
  traffic 
  it 
  is 
  more 
  than 
  ever 
  imperative 
  

   that 
  measures 
  for 
  Stegomyia 
  reduction 
  in 
  Far 
  Eastern 
  ports 
  should 
  be 
  vigorously 
  

   pursued. 
  Examples 
  of 
  effective 
  action 
  are 
  not 
  wanting, 
  and 
  the 
  work 
  of 
  James 
  

   and 
  his 
  colleagues 
  in 
  Colombo 
  has 
  shown 
  what 
  may 
  be 
  accomplished 
  in 
  this 
  direction. 
  

  

  5. 
  Trained 
  entomologists 
  should 
  be 
  engaged 
  to 
  give 
  their 
  whole 
  time 
  to 
  the 
  study 
  

   of 
  the 
  highly 
  specialised 
  problems 
  connected 
  with 
  mosquito 
  reduction 
  and 
  to 
  the 
  

   supervision 
  of 
  measures. 
  These 
  officers 
  should 
  work 
  in 
  close 
  co-operation 
  with 
  the 
  

   executive 
  public 
  health 
  authorities. 
  

  

  