﻿197 
  

  

  ON 
  A 
  METHOD 
  OF 
  SEPARATING 
  INSECTS 
  AND 
  OTHER 
  ARTHROPODS 
  

  

  FROM 
  SOIL. 
  

  

  By 
  Hubert 
  M. 
  Morris, 
  M.Sc, 
  F.E.S. 
  

  

  Entomological 
  Department, 
  Institute 
  of 
  Plant 
  Pathology, 
  

   Rothamsted 
  Experimental 
  Station, 
  Harpenden. 
  

  

  In 
  an 
  investigation 
  of 
  the 
  insect 
  fauna 
  of 
  the 
  soil, 
  the 
  obtaining 
  of 
  the 
  insects 
  

   from 
  this 
  medium 
  has 
  hitherto 
  been 
  a 
  very 
  laborious 
  and 
  tedious 
  process. 
  It 
  has 
  

  

  Fig. 
  1. 
  Apparatus 
  for 
  obtaining 
  insects, 
  etc., 
  from 
  soil; 
  > 
  ',. 
  

  

  necessitated 
  the 
  crumbling 
  of 
  the 
  soil 
  by 
  hand, 
  and 
  the 
  examination 
  of 
  it 
  in 
  small 
  

   quantities 
  at 
  a 
  time 
  over 
  sheets 
  of 
  paper. 
  This 
  method 
  is 
  naturally 
  a 
  lengthy 
  one, 
  

   and 
  in 
  order 
  to 
  facilitate 
  it 
  the 
  apparatus 
  which 
  is 
  now 
  described 
  was 
  designed. 
  

  

  (6750) 
  

  

  