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  and 
  orchids. 
  Oniscus 
  asellus^ 
  L., 
  is 
  a 
  common 
  pest 
  in 
  cold 
  frames 
  and 
  

   potting 
  sheds, 
  and 
  also 
  in 
  flower 
  borders 
  and 
  vegetable 
  gardens. 
  Porcellio 
  

   scaber, 
  Latr., 
  is 
  frequently 
  found 
  in 
  orchid 
  houses 
  and 
  ferneries 
  and 
  

   has 
  been 
  recorded 
  as 
  damaging 
  the 
  bark 
  of 
  Hme-trees. 
  This 
  species 
  

   and 
  0. 
  asellus 
  are 
  the 
  two 
  commonest 
  in 
  this 
  country. 
  P. 
  scaber 
  is 
  

   frequently 
  found 
  in 
  cold 
  frames 
  in 
  the 
  Channel 
  Islands 
  often 
  accom- 
  

   panied 
  by 
  smaller 
  numbers 
  of 
  P. 
  dilatatus, 
  Brandt, 
  and 
  P. 
  pictus, 
  

   Brandt. 
  Porcellio 
  laevis, 
  Latr., 
  has 
  been 
  found 
  attacking 
  the 
  roots 
  of 
  

   strawberry 
  plants 
  in 
  the 
  Channel 
  Islands, 
  while 
  Porcellionides 
  pruinosus, 
  

   Brandt, 
  has 
  been 
  taken 
  on 
  potatoes, 
  and 
  lettuce 
  grown 
  under 
  glass. 
  

   In 
  flower 
  borders 
  an 
  enormous 
  amount 
  of 
  damage, 
  often 
  put 
  down 
  to 
  

   slugs, 
  is 
  frequently 
  caused 
  by 
  Armadillidium 
  vulgar 
  e, 
  L., 
  the 
  common 
  

   pill 
  woodlouse, 
  which 
  also 
  attacks 
  potatoes 
  and 
  field-beans, 
  the 
  latter 
  

   plant 
  being 
  also 
  attacked 
  by 
  A. 
  nasutum, 
  Budde-Lund. 
  

  

  Outhouses, 
  potting 
  sheds, 
  etc., 
  should 
  be 
  cleaned 
  out 
  from 
  time 
  to 
  

   time, 
  and 
  rubbish 
  heaps 
  cleared 
  away. 
  Kerosene 
  emulsion 
  as 
  a 
  

   contact 
  spray 
  is 
  effective, 
  and 
  sHced 
  potatoes 
  thinly 
  covered 
  with 
  Paris 
  

   green 
  or 
  London 
  purple 
  may 
  be 
  used 
  as 
  a 
  bait 
  for 
  these 
  pests. 
  Sprink- 
  

   ling 
  Paris 
  green 
  on 
  the 
  floor 
  of 
  a 
  greenhouse 
  and 
  covering 
  it 
  with 
  damp 
  

   boards 
  is 
  very 
  effective. 
  Dusting 
  the 
  soil, 
  especially 
  along 
  the 
  sides 
  

   of 
  tiles 
  surrounding 
  flower 
  beds, 
  with 
  equal 
  parts 
  of 
  Paris 
  green 
  and 
  

   ground 
  unslaked 
  lime 
  is 
  an 
  excellent 
  remedy. 
  The 
  loose 
  straw 
  and 
  

   rubbish 
  that 
  collects 
  round 
  manure 
  heaps 
  should 
  be 
  raked 
  together 
  

   and 
  burnt 
  before 
  the 
  manure 
  heap 
  is 
  opened 
  for 
  use. 
  In 
  this 
  way 
  

   many 
  hundreds 
  of 
  woodlice 
  may 
  be 
  collected 
  and 
  destroyed. 
  

  

  Maskew 
  (F.). 
  Report 
  of 
  Investigation 
  of 
  the 
  Fruit-fly 
  Situation 
  in 
  the 
  

   Territory 
  of 
  Hawaii. 
  — 
  Mihly. 
  Bull. 
  State 
  Commiss. 
  Hortic, 
  Sacra- 
  

   mentOy 
  Cat, 
  iii, 
  no. 
  6, 
  June 
  1914, 
  pp. 
  227-238. 
  

  

  This 
  is 
  a 
  detailed 
  account 
  of 
  a 
  visit 
  made 
  by 
  the 
  author 
  to 
  Hawaii 
  

   for 
  the 
  purpose 
  of 
  investigating 
  the 
  Mediterranean 
  fruit-fly 
  [Ceratitis 
  

   capitata] 
  in 
  all 
  its 
  phases, 
  with 
  special 
  reference 
  to 
  the 
  value 
  and 
  

   results 
  of 
  the 
  clean-culture 
  campaign 
  at 
  Honolulu 
  and 
  its 
  bearing 
  

   upon 
  preventing 
  the 
  introduction 
  of 
  the 
  fruit-fly 
  into 
  California 
  and 
  

   the 
  United 
  States. 
  The 
  clean 
  culture 
  campaign, 
  which 
  the 
  author 
  

   very 
  fully 
  describes, 
  had 
  at 
  the 
  time 
  of 
  his 
  visit 
  been 
  in 
  operation 
  for 
  

   about 
  thirty 
  months, 
  but 
  in 
  his 
  opinion 
  had 
  not 
  controlled 
  the 
  fly, 
  

   nor 
  has 
  it 
  reduced 
  the 
  amount 
  of 
  infested 
  material 
  reaching 
  the 
  main- 
  

   land. 
  The 
  melon 
  fly 
  (Dacus 
  curcurbitae) 
  is 
  also 
  a 
  source 
  of 
  great 
  

   financial 
  loss, 
  and 
  all 
  its 
  food-plants 
  should 
  be 
  included 
  in 
  the 
  list 
  

   covered 
  by 
  the 
  United 
  States 
  quarantine 
  order. 
  A 
  Federal 
  super- 
  

   vision 
  of 
  horticultural 
  exports, 
  similar 
  to 
  the 
  system 
  in 
  force 
  in 
  the 
  

   gipsy 
  moth 
  area, 
  would 
  protect 
  the 
  horticultural 
  interests 
  of 
  the 
  

   mainland 
  much 
  better 
  than 
  a 
  continuance 
  of 
  the 
  Honolulu 
  campaign. 
  

   Every 
  article 
  of 
  commerce 
  between 
  the 
  islands 
  and 
  the 
  mainland 
  

   constitutes 
  a 
  potential 
  danger 
  of 
  introducing 
  the 
  fruit-fly, 
  and 
  ship- 
  

   ments 
  of 
  bananas, 
  under 
  the 
  present 
  system 
  of 
  Federal 
  inspection, 
  

   do 
  not 
  constitute 
  a 
  greater 
  danger 
  than 
  other 
  articles. 
  The 
  question 
  

   of 
  mails, 
  sealed 
  baggage 
  and 
  passengers' 
  clothing 
  as 
  avenues 
  of 
  entrance 
  

   is 
  one 
  of 
  grave 
  importance, 
  and 
  measures 
  aiming 
  at 
  the 
  complete 
  

   control 
  of 
  these 
  should 
  be 
  devised. 
  

  

  