﻿330 
  Mr. 
  F. 
  Enock's 
  life-history 
  of 
  

  

  Most 
  of 
  us 
  here 
  present 
  will 
  remember 
  the 
  fear 
  and 
  

   great 
  trembling 
  which 
  seemed 
  to 
  fall 
  upon 
  some 
  entomo- 
  

   gists, 
  farmers, 
  and 
  others; 
  and 
  "reports" 
  came 
  in 
  from 
  

   various 
  quarters, 
  all 
  kinds 
  of 
  ingenious 
  explanations 
  

   being 
  given 
  as 
  to 
  why 
  it 
  had 
  appeared 
  in 
  one 
  county 
  

   and 
  not 
  in 
  another 
  — 
  the 
  fact 
  that 
  "the 
  pest" 
  had 
  wings 
  

   and 
  could 
  transport 
  itself 
  whithersoever 
  it 
  felt 
  disposed 
  

   being 
  quite 
  overlooked 
  ; 
  and 
  I 
  am 
  inclined 
  to 
  think 
  that 
  

   had 
  we 
  had 
  in 
  Great 
  Britain 
  a 
  properly 
  organised 
  staff 
  

   of 
  practical 
  entomologists, 
  with 
  agents 
  in 
  the 
  country, 
  

   such 
  as 
  the 
  United 
  States 
  of 
  America 
  have, 
  our 
  Govern- 
  

   ment 
  " 
  Keports 
  " 
  would 
  now 
  be 
  looked 
  upon 
  with 
  a 
  little 
  

   more 
  respect 
  than 
  they 
  are 
  by 
  foreign 
  entomologists. 
  

  

  It 
  is 
  ver}^ 
  often 
  the 
  case, 
  when 
  an 
  entomologist 
  sets 
  

   himself 
  the 
  task 
  of 
  following 
  out 
  the 
  life-history 
  of 
  any 
  

   particular 
  insect, 
  that 
  he 
  becomes 
  acquainted 
  with 
  its 
  

   last 
  sta,ge 
  first, 
  and 
  the 
  first, 
  last; 
  though 
  the 
  subject 
  of 
  

   my 
  discourse 
  made 
  itself 
  known 
  to 
  us 
  first 
  in 
  its 
  so- 
  

   called 
  puparia 
  or 
  third 
  stage, 
  and 
  this 
  appears 
  to 
  have 
  

   satisfied 
  most 
  " 
  arm-chair" 
  naturalists. 
  

  

  My 
  first 
  acquaintance 
  in 
  the 
  field 
  with 
  the 
  now 
  well- 
  

   known 
  " 
  flax-seed 
  " 
  was 
  made 
  on 
  August 
  5th, 
  1887, 
  when 
  

   invited 
  by 
  Mr. 
  G. 
  Palmer 
  to 
  visit 
  his 
  barley 
  fields, 
  and 
  

   many 
  times 
  since 
  then 
  have 
  I 
  enjoyed 
  the 
  kind 
  hospitality 
  

   of 
  Eevell's 
  Hall. 
  

  

  I 
  will 
  now 
  commence 
  the 
  life-history 
  of 
  the 
  Hessian 
  

   Fly 
  by 
  giving 
  my 
  notes 
  and 
  observations 
  made 
  upon 
  the 
  

   first 
  stage, 
  viz., 
  the 
  egg. 
  On 
  Sept. 
  8th, 
  1888, 
  I 
  visited 
  

   Eevell's 
  Hall 
  Farm, 
  and 
  examined 
  the 
  stubbles 
  in 
  one 
  

   of 
  the 
  barley 
  fields, 
  which 
  had 
  only 
  been 
  cut 
  a 
  day 
  or 
  

   two 
  previously, 
  and 
  here 
  I 
  very 
  soon 
  found 
  the 
  eggs 
  on 
  

   both 
  self-sown 
  plants 
  and 
  aftergrowth. 
  I 
  immediately 
  

   settled 
  down 
  to 
  serious 
  work, 
  and, 
  whilst 
  so 
  engaged, 
  

   I 
  observed 
  a 
  small 
  dark 
  fly 
  meandering 
  about 
  the 
  

   stubble 
  close 
  to 
  the 
  ground 
  ; 
  after 
  following 
  it 
  for 
  some 
  

   yards 
  I 
  lost 
  sight 
  of 
  it 
  near 
  some 
  aftergrowth, 
  from 
  

   which 
  I 
  started 
  it 
  up 
  again, 
  and 
  finally 
  lost 
  it 
  among 
  a 
  

   heap 
  of 
  cut 
  barley. 
  On 
  examination 
  of 
  the 
  self-sown 
  

   plants 
  I 
  found 
  a 
  number 
  of 
  eggs 
  had 
  been 
  laid 
  thereon. 
  

  

  Wishing 
  to 
  arrive 
  at 
  some 
  definite 
  conclusion 
  as 
  to 
  

   whether 
  the 
  fly 
  preferred 
  the 
  self-sown 
  plant 
  or 
  the 
  

   "aftergrowth," 
  I 
  gathered 
  a 
  hundred 
  of 
  each. 
  I 
  then 
  

   most 
  carefully 
  examined 
  each 
  leaf 
  on 
  both 
  sides 
  with 
  my 
  

   pocket-lens, 
  commencing 
  with 
  the 
  self-sown, 
  most 
  of 
  

  

  