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  common 
  as 
  a 
  palm 
  pest. 
  The 
  Ross 
  scale 
  (Chrysomphalus 
  rossi) 
  has 
  

   even 
  greater 
  potentialities 
  as 
  a 
  pest 
  and 
  much 
  trouble 
  is 
  being 
  exper- 
  

   ienced 
  in 
  the 
  prevention 
  of 
  its 
  spread. 
  Hedge 
  plants 
  are 
  especially 
  

   attacked 
  by 
  it 
  and 
  it 
  is 
  feared 
  that 
  this 
  pest 
  will 
  attack 
  the 
  magnificent 
  

   stretches 
  of 
  Australian 
  myrtle 
  (Leptospermum). 
  The 
  nursery 
  control 
  

   service 
  is 
  also 
  endeavouring 
  to 
  hold 
  back 
  the 
  pustular 
  scale 
  of 
  the 
  

   oak 
  {Asterolecanium 
  variolosum). 
  The 
  chafi 
  scale 
  (Parlatoria 
  pergandii) 
  

   and 
  Aspidiotus 
  dictyospermi 
  are 
  other 
  potential 
  pests 
  found 
  during 
  

   nursery 
  inspection. 
  Twenty-seven 
  nurseries 
  were 
  quarantined 
  during 
  

   the 
  financial 
  year 
  1912-1913. 
  

  

  References 
  are 
  also 
  made 
  to 
  the 
  plant 
  and 
  potato 
  import 
  regulations. 
  

   Few 
  of 
  the 
  plants 
  imported 
  during 
  the 
  period 
  under 
  review 
  were 
  found 
  

   to 
  be 
  infested 
  with 
  pests. 
  However 
  Lepidosaphes 
  ulmi 
  (oyster-shell 
  

   scale) 
  was 
  found 
  a 
  few 
  times, 
  and 
  once 
  in 
  considerable 
  numbers, 
  and 
  a 
  

   gross 
  infestation 
  by 
  Aulacaspis 
  rosae 
  (rose 
  scale) 
  was 
  found 
  on 
  some 
  

   blackberry 
  plants 
  consigned 
  to 
  a 
  nursery. 
  Neither 
  of 
  these 
  scales 
  is 
  

   known 
  to 
  occur 
  anywhere 
  in 
  South 
  Africa. 
  Among 
  the 
  fruit 
  inspected, 
  

   San 
  Jose 
  scale 
  was 
  in 
  abundance 
  on 
  some 
  Californian 
  pears. 
  During 
  

   this 
  period 
  the 
  sorting 
  of 
  imported 
  potatoes 
  has 
  been 
  supplanted 
  by 
  

   fumigation 
  in 
  formaldehyde 
  gas. 
  The 
  chambers 
  at 
  Cape 
  Town 
  were 
  

   made 
  14 
  feet 
  square 
  and 
  8 
  feet 
  high, 
  and 
  the 
  cases 
  were 
  stacked 
  three 
  

   or 
  four 
  high, 
  with 
  about 
  three 
  inches 
  of 
  clear 
  space 
  all 
  round 
  them. 
  

   The 
  chambers 
  were 
  built 
  with 
  two 
  wide 
  doors 
  one 
  opposite 
  the 
  other 
  

   and 
  the 
  charge 
  of 
  chemicals 
  divided 
  between 
  two 
  buckets. 
  The 
  

   charge 
  consisted 
  of 
  48 
  fluid 
  oz. 
  formaldehyde 
  solution 
  (nominally 
  

   40 
  per 
  cent.) 
  and 
  24 
  avoir, 
  oz. 
  of 
  permanganate 
  of 
  potash 
  crystals. 
  

   The 
  crystals 
  were 
  placed 
  in 
  the 
  bucket 
  and 
  the 
  liquid 
  added. 
  In 
  

   about 
  half 
  the 
  treatments, 
  the 
  exposure 
  was 
  overnight 
  and 
  the 
  rest 
  

   was 
  generally 
  four 
  to 
  five 
  hours. 
  No 
  injuries 
  to 
  the 
  potatoes 
  were 
  

   experienced 
  by 
  this 
  treatment. 
  No 
  contraventions 
  of 
  serious 
  import- 
  

   ance 
  of 
  the 
  "Codling 
  moth 
  Regulations" 
  have 
  been 
  reported. 
  As 
  a 
  result 
  

   of 
  the 
  " 
  Plant 
  Removal 
  Regulations", 
  two 
  rather 
  large 
  consignments 
  

   of 
  oak 
  trees, 
  infested 
  with 
  the 
  pustular 
  oak 
  scale, 
  were 
  prevented 
  from 
  

   being 
  despatched 
  from 
  Johannesburg 
  to 
  distant 
  centres, 
  and 
  the 
  

   finding 
  of 
  the 
  ordinary 
  red 
  scale 
  on 
  fruit 
  trees, 
  roses 
  and 
  vines 
  was 
  of 
  

   common 
  occurrence. 
  A 
  detailed 
  statement 
  of 
  the 
  occurrence 
  of 
  

   San 
  Jose 
  scale 
  is 
  given, 
  and 
  precautionary 
  measures 
  are 
  being 
  taken 
  

   to 
  check 
  the 
  dissemination 
  of 
  this 
  pest. 
  Migratory 
  locusts 
  gave 
  no 
  

   material 
  trouble 
  in 
  any 
  part 
  of 
  South 
  Africa 
  during 
  the 
  period 
  covered 
  

   by 
  this 
  report. 
  

  

  YoTHERS 
  (M. 
  A.). 
  The 
  peach 
  twig-borer. 
  An 
  Important 
  Enemy 
  of 
  

   Stone 
  Fruits. 
  — 
  Washington 
  Slate 
  Agric. 
  Expt. 
  Sta., 
  Pullman, 
  Bull, 
  

   no. 
  61, 
  10th 
  Feb. 
  1914, 
  4 
  pp., 
  5 
  figs. 
  

  

  Known 
  in 
  the 
  United 
  States 
  since 
  1860, 
  when 
  it 
  was 
  introduced 
  with 
  

   the 
  peach 
  from 
  Western 
  Asia, 
  the 
  peach 
  twig-borer 
  or 
  peach 
  worm, 
  

   Anarsia 
  lineatella, 
  Z., 
  causes 
  considerable 
  damage 
  not 
  only 
  to 
  the 
  peach, 
  

   but 
  to 
  other 
  stone 
  fruit, 
  such 
  as 
  prunes, 
  apricots, 
  nectarines, 
  plums 
  and 
  

   almonds. 
  The 
  larvae 
  hibernate 
  in 
  small 
  silk-lined 
  cells 
  just 
  beneath 
  

   the 
  surface 
  of 
  the 
  bark, 
  and 
  located 
  within 
  the 
  forks 
  of 
  small 
  twigs. 
  

   About 
  the 
  time 
  the 
  peach 
  trees 
  bloom 
  in 
  the 
  spring, 
  the 
  young 
  larvae 
  

   emerge 
  and, 
  after 
  a 
  couple 
  of 
  days, 
  eat 
  their 
  way 
  into 
  the 
  tips 
  of 
  the 
  

  

  