﻿596 
  

  

  be 
  hoped 
  for 
  ; 
  of 
  recent 
  years 
  some 
  parasite 
  or 
  fungus 
  enemy 
  of 
  the 
  

   red 
  scale 
  has 
  estabhshed 
  itself 
  and 
  keeps 
  it 
  in 
  check. 
  Young 
  trees 
  

   are 
  frequently 
  attacked 
  by 
  a 
  soft 
  brown 
  scale, 
  which 
  is 
  also 
  to 
  be 
  found 
  

   on 
  many 
  other 
  indigenous 
  plants, 
  but 
  yields 
  readily 
  to 
  treatment 
  by 
  

   ordinary 
  washes 
  and 
  sprays, 
  though 
  if 
  neglected 
  the 
  resulting 
  sooty 
  

   deposit 
  interferes 
  with 
  the 
  natural 
  functions 
  of 
  the 
  foHage 
  and 
  retards 
  

   the 
  growth. 
  The 
  AustraHan 
  bug 
  [Icerya 
  purchasi] 
  makes 
  its 
  appear- 
  

   ance 
  at 
  intervals, 
  but 
  is 
  kept 
  effectively 
  in 
  check 
  by 
  its 
  natural 
  enemies. 
  

   The 
  orange 
  codHng 
  moth 
  [? 
  Enarmonia 
  batrachopa, 
  Meyr.] 
  is 
  more 
  

   abundant 
  than 
  usual 
  this 
  year, 
  and 
  in 
  some 
  districts 
  loss 
  due 
  to 
  damage 
  

   by 
  the 
  larvae 
  amounts 
  to 
  50 
  per 
  cent. 
  

  

  Citrus 
  trees 
  at 
  Premier 
  Estate. 
  — 
  Rhodesia 
  Agric. 
  Jl., 
  Salisbury, 
  xi, 
  

   no. 
  5, 
  June 
  1914, 
  pp. 
  766-767. 
  

  

  Coccus 
  hesperidum 
  and 
  Icerya 
  purchasi 
  are 
  recorded 
  as 
  being 
  found 
  

   on 
  citrus 
  trees 
  everywhere 
  in 
  Rhodesia, 
  The 
  black 
  aphis 
  attacks 
  

   the 
  young 
  growth 
  of 
  trees, 
  and 
  although 
  it 
  is 
  persistent 
  in 
  returning 
  

   it 
  may 
  be 
  destroyed 
  by 
  the 
  mildest 
  form 
  of 
  wash. 
  

  

  GouGH 
  (L. 
  H.). 
  ProblSmes 
  relatifs 
  au 
  nouveau 
  fl6au 
  du 
  cotton 
  6gyp- 
  

  

  tien, 
  le 
  ver 
  rose 
  de 
  la 
  capsule 
  ou 
  Gelechia 
  gossypiella, 
  Saunders. 
  

  

  [Problems 
  relating 
  to 
  the 
  new 
  pest 
  of 
  Egyptian 
  cotton, 
  the 
  Pink 
  

  

  Boll 
  Worm, 
  Gelechia 
  gossypiella, 
  Saunders.] 
  — 
  Bull. 
  Union 
  Agricul- 
  

  

  teurs 
  d'Eyypte, 
  Cairo, 
  xii, 
  no. 
  107, 
  June 
  1914, 
  pp. 
  196-197. 
  

  

  In 
  this 
  communication 
  to 
  the 
  Congress 
  of 
  Tropical 
  Agriculture, 
  held 
  

   in 
  London, 
  in 
  June 
  1914, 
  the 
  author 
  states 
  that 
  the 
  number 
  of 
  genera- 
  

   tions 
  of 
  the 
  pink 
  boll-worm 
  varies 
  from 
  one 
  to 
  six 
  per 
  annum 
  in 
  

   Egypt. 
  Pimpla 
  roborator, 
  Chelonella 
  sulcata, 
  Limnerium 
  interruptum, 
  

   Pediculoides 
  ventricosus, 
  and 
  Microsporidium 
  polyhedricum 
  are 
  parasites 
  

   capable 
  of 
  reducing 
  the 
  number 
  of 
  hibernating 
  larvae 
  by 
  more 
  than 
  

   40 
  per 
  cent. 
  In 
  infested 
  fields 
  the 
  attack 
  was 
  more 
  severe 
  in 
  the 
  

   second 
  year 
  and 
  diminished 
  considerably 
  in 
  the 
  third. 
  The 
  only 
  

   means 
  of 
  control 
  at 
  present 
  available, 
  are 
  destruction 
  during 
  winter 
  

   of 
  all 
  the 
  cotton 
  wood 
  stored 
  for 
  fuel 
  and 
  fumigation 
  or 
  other 
  treatment 
  

   of 
  the 
  cotton 
  seed. 
  

  

  ViVET 
  (E.). 
  Les 
  plaies 
  de 
  taille 
  de 
  la 
  Vigne 
  et 
  les 
  Termites. 
  [Termites 
  

   and 
  the 
  cicatrices 
  due 
  to 
  pruning 
  the 
  vine.] 
  — 
  Bull. 
  Agric. 
  Alger. 
  

   Tun. 
  Maroc, 
  Algiers, 
  xx, 
  no. 
  11, 
  June 
  1914, 
  pp. 
  333-338. 
  

  

  The 
  vine-growers 
  in 
  the 
  Tipaza 
  district 
  were 
  alarmed 
  on 
  finding 
  

   most 
  of 
  the 
  weak 
  vine-stocks 
  infested 
  by 
  termites 
  when 
  the 
  first 
  

   shoots 
  were 
  beginning 
  to 
  appear 
  this 
  year. 
  The 
  species 
  concerned 
  

   is 
  Calotermes 
  flavicollis, 
  in 
  the 
  colonies 
  of 
  which 
  Picard 
  states 
  that 
  

   no 
  workers 
  or 
  neuters 
  occur, 
  their 
  role 
  being 
  taken 
  by 
  the 
  

   larvae. 
  It 
  is 
  these 
  which 
  vine-growers 
  chiefly 
  observe, 
  there 
  being 
  

   but 
  few 
  soldiers 
  in 
  each 
  colony. 
  Attack 
  is 
  hmited 
  to 
  those 
  portions 
  

   of 
  the 
  vine 
  which 
  are 
  nearly 
  dried 
  up. 
  This 
  explains 
  why 
  the 
  young 
  

   and 
  healthy 
  vines 
  are 
  immune, 
  while 
  old 
  ones, 
  covered 
  with 
  cicatrices 
  

   due 
  to 
  pruning 
  and 
  in 
  which 
  the 
  sap-flow 
  is 
  weak, 
  are 
  specially 
  attacked. 
  

  

  