﻿( 
  V 
  ) 
  

  

  the 
  pupa 
  forces 
  its 
  way 
  through 
  the 
  brittle 
  sldn 
  of 
  the 
  

   puparium 
  and 
  leaf-sheath, 
  and 
  in 
  less 
  than 
  an 
  hour 
  and 
  a 
  

   half 
  the 
  fly 
  has 
  emerged, 
  dried 
  its 
  wings, 
  and 
  flown 
  away 
  to 
  

   seek 
  a 
  partner. 
  

  

  The 
  author 
  stated 
  that 
  careful 
  experiments, 
  carried 
  on 
  from 
  

   year 
  to 
  year, 
  to 
  ascertain 
  whether 
  the 
  Hessian 
  Fly 
  is 
  partheno- 
  

   genetic 
  have 
  proved 
  that 
  it 
  is 
  not; 
  but 
  an 
  interesting 
  fact 
  was 
  

   discovered 
  regarding 
  the 
  polygamous 
  habits 
  of 
  the 
  male, 
  many 
  

   having 
  been 
  isolated 
  and 
  proved 
  to 
  be 
  able 
  to 
  impregnate 
  six 
  

   females. 
  Puparia 
  kept 
  perfectly 
  dry 
  for 
  two 
  years 
  produced 
  

   perfect 
  flies, 
  showing 
  that 
  it 
  was 
  possible 
  for 
  the 
  pest 
  to 
  have 
  

   been 
  introduced 
  into 
  America 
  by 
  the 
  Hessian 
  troops. 
  Mr. 
  

   Enock 
  thought 
  that 
  the 
  only 
  way 
  to 
  keep 
  this 
  terrible 
  scourge 
  

   down 
  was 
  by 
  breeding 
  the 
  parasites 
  and 
  turning 
  them 
  down 
  

   in 
  infested 
  localities 
  ; 
  but 
  he 
  did 
  not 
  see 
  any 
  chance 
  that 
  such 
  

   a 
  suggestion, 
  — 
  though 
  its 
  utility 
  had 
  been 
  proved 
  by 
  hard 
  

   facts, 
  — 
  would 
  ever 
  be 
  acted 
  on 
  in 
  Great 
  Britain. 
  In 
  America, 
  

   however. 
  Professor 
  Eiley, 
  the 
  eminent 
  State 
  Entomologist, 
  

   had 
  accepted 
  Mr. 
  Enock's 
  offer 
  to 
  send 
  over 
  puparia 
  con- 
  

   taining 
  the 
  most 
  prolific 
  parasite, 
  viz., 
  Semiotellus 
  nigripes: 
  and 
  

   Mr. 
  Enock 
  said 
  that 
  before 
  the 
  end 
  of 
  March 
  between 
  two 
  and 
  

   three 
  thousand 
  parasitised 
  puparia 
  would 
  be 
  in 
  the 
  hands 
  

   of 
  Professor 
  Eiley, 
  who 
  was 
  not 
  one 
  to 
  chill 
  the 
  enthusiasm 
  

   of 
  an 
  entomologist 
  by 
  saying 
  " 
  It 
  can't 
  be 
  done," 
  or 
  " 
  It 
  is 
  

   not 
  practicable." 
  

  

  The 
  paper 
  was 
  most 
  elaborately 
  illustrated 
  by 
  some 
  sixty 
  

   photographs 
  thrown 
  upon 
  a 
  large 
  screen 
  by 
  the 
  aid 
  of 
  a 
  

   powerful 
  oxy-hydrogen 
  lantern, 
  so 
  that 
  every 
  detail 
  could 
  be 
  

   distinctly 
  seen 
  by 
  the 
  large 
  number 
  of 
  Fellows 
  and 
  visitors 
  

   present 
  at 
  the 
  meeting. 
  

  

  Mr. 
  (j. 
  H. 
  Verrall 
  said 
  he 
  believed 
  the 
  Hessian 
  Fly 
  

   was 
  no 
  more 
  a 
  recent 
  introduction 
  into 
  this 
  country 
  

   than 
  the 
  Cabbage 
  White 
  Butterflies. 
  He 
  thought 
  that 
  the 
  

   fact 
  of 
  its 
  having 
  so 
  many 
  parasites 
  proved 
  it 
  to 
  be 
  an 
  

   old 
  inhabitant 
  of 
  Britain. 
  "When 
  it 
  was 
  first 
  introduced 
  

   into 
  America 
  its 
  parasites 
  did 
  not 
  accompany 
  it, 
  and 
  it 
  con- 
  

   sequently 
  spread 
  very 
  rapidly 
  ; 
  but 
  since 
  its 
  parasites 
  have 
  

   appeared 
  it 
  has 
  not 
  done 
  so 
  much 
  damage. 
  Mr. 
  Verrall 
  

   further 
  stated 
  that 
  the 
  presence 
  of 
  the 
  Hessian 
  Fly 
  had 
  long 
  

  

  