﻿4tS 
  

  

  A 
  USEFUL 
  BREEDING 
  CAGE.* 
  

  

  By 
  Laueence 
  D. 
  Cleare, 
  Jnr., 
  F.E.S., 
  

  

  Biological 
  Division, 
  Deft, 
  of 
  Science 
  and 
  Agric. 
  , 
  British 
  Guiana. 
  

  

  Entomological 
  investigations 
  in 
  the 
  tropics 
  usually 
  entail 
  a 
  certain 
  amount 
  of 
  

   difficulties 
  not 
  experienced 
  in 
  temperate 
  regions, 
  and 
  it 
  is 
  often 
  necessary 
  to 
  devise 
  

   various 
  kinds 
  of 
  apparatus 
  to 
  overcome 
  these. 
  The 
  breeding 
  cage 
  described 
  here 
  

   was 
  devised 
  by 
  myself 
  as 
  the 
  result 
  of 
  a 
  number 
  of 
  difficulties 
  experienced 
  in 
  br3eding 
  

   experiments. 
  Cages 
  of 
  this 
  type 
  have 
  been 
  in 
  constant 
  use 
  in 
  this 
  laboratory 
  for 
  the 
  

   past 
  four 
  years 
  and 
  have 
  been 
  found 
  to 
  meet 
  almost 
  every 
  requirement. 
  The 
  ease 
  

   with 
  which 
  they 
  are 
  constructed, 
  together 
  with 
  the 
  possibility 
  of 
  varying 
  their 
  size 
  

   to 
  suit 
  one's 
  needs, 
  as 
  well 
  as 
  their 
  portability, 
  are 
  all 
  highly 
  commendable 
  features. 
  

  

  Fig. 
  I. 
  A 
  portable 
  breeding 
  cage 
  

  

  The 
  cages 
  are 
  composed 
  of 
  cylinders 
  of 
  brass 
  mosquito-proof 
  wire 
  netting, 
  20 
  

   meshes 
  to 
  the 
  inch, 
  held 
  together 
  by 
  brass 
  paper-fasteners. 
  To 
  the 
  top 
  and 
  bottom 
  

   of 
  these 
  cylinders 
  covers 
  are 
  fitted. 
  In 
  this 
  laboratory 
  large 
  glass 
  petri 
  dishes, 
  between 
  

   8 
  and 
  10 
  inches 
  diameter, 
  are 
  used 
  for 
  this 
  purpose. 
  Galvanised 
  iron 
  pans 
  may, 
  

   however, 
  be 
  used 
  instead 
  of 
  these 
  dishes, 
  and 
  if 
  made 
  in 
  nests 
  would 
  be 
  a 
  decided 
  

   advantage 
  when 
  travelling 
  ; 
  the 
  wire 
  being 
  carried 
  in 
  rolls. 
  It 
  will 
  be 
  seen 
  that 
  the 
  

   diameter 
  of 
  these 
  cages 
  is 
  limited 
  only 
  by 
  the 
  size 
  of 
  the 
  pans, 
  while 
  the 
  height 
  can 
  be 
  

   ♦Published 
  by 
  permission 
  of 
  the 
  Director 
  of 
  Science 
  and 
  Agriculture, 
  British 
  Guiana. 
  

  

  