﻿514 
  

  

  Very 
  little 
  information 
  is 
  available 
  as 
  to 
  the 
  natural 
  enemies 
  of 
  these 
  

   mites, 
  but 
  the 
  author 
  found 
  a 
  small 
  Chalcid 
  parasite 
  in 
  a 
  bud 
  ; 
  whilst 
  

   Korolkov 
  reports 
  that 
  in 
  Moscow 
  he 
  found 
  inside 
  the 
  swollen 
  buds 
  

   of 
  currants 
  the 
  larvae 
  of 
  a 
  Cecidomyid, 
  and 
  CoUinge 
  records 
  the 
  larvae 
  

   of 
  Coccinella 
  1-punctata 
  as 
  an 
  enemy 
  of 
  these 
  mites. 
  Both 
  normal 
  

   and 
  infested 
  buds 
  are 
  figured. 
  

  

  The 
  author 
  recommends 
  the 
  destruction 
  of 
  attacked 
  buds 
  and, 
  in 
  

   cases 
  of 
  serious 
  infestation, 
  of 
  the 
  shoots 
  or 
  even 
  the 
  whole 
  plant 
  ; 
  

   the 
  careful 
  removal 
  of 
  rubbish, 
  leaves 
  and 
  infested 
  ends 
  in 
  late 
  autumn 
  

   and 
  early 
  in 
  spring 
  ; 
  the 
  powdering 
  of 
  previously 
  moistened 
  plants 
  

   with 
  a 
  ¥iixture 
  of 
  one 
  part 
  of 
  finely 
  ground 
  unslaked 
  lime 
  and 
  two 
  

   parts 
  of 
  flowers 
  of 
  sulphur 
  in 
  March, 
  April 
  and 
  May. 
  As 
  preventive 
  

   remedies 
  he 
  recommends 
  the 
  .planting 
  only 
  of 
  seedlings 
  or 
  cuttings 
  

   known 
  to 
  be 
  immune, 
  the 
  French 
  varieties 
  of 
  black-currants 
  and 
  

   also 
  the 
  English 
  " 
  Boskoop 
  Giant 
  " 
  being 
  considered 
  to 
  be 
  free 
  from 
  

   infestation. 
  [See 
  this 
  Review, 
  Ser. 
  A, 
  i, 
  pp. 
  139-140.] 
  

  

  Trzebinski 
  (Dr. 
  J.). 
  Sprawozdanie 
  za 
  rok 
  1913 
  z 
  dziaValnosci 
  stacji 
  

   ochrony 
  roslin 
  w 
  Warszawie. 
  [Report 
  for 
  1913 
  on 
  the 
  activity 
  

   of 
  the 
  Station 
  for 
  the 
  protection 
  of 
  plants 
  in 
  Warsaw.] 
  — 
  Reprint 
  

   from 
  Rocznika 
  Tow. 
  Ogrod. 
  Warsz. 
  [The 
  Annual 
  of 
  the 
  Warsaw 
  

   Horticultural 
  Society] 
  for 
  1913, 
  Warsaw, 
  40 
  pp., 
  2 
  figs., 
  1914. 
  

  

  This 
  is 
  mainly 
  a 
  report 
  on 
  experiments 
  with 
  remedies 
  against 
  

   fungus 
  diseases 
  conducted 
  by 
  the 
  Station, 
  but 
  some 
  experimental 
  

   sprayings 
  against 
  insect 
  pests 
  of 
  plants 
  were 
  also 
  undertaken. 
  

   Spraying 
  of 
  firs 
  against 
  Chermes 
  abietis, 
  Kalt., 
  with 
  tobacco 
  extract 
  

   and 
  oil 
  or 
  Bourdon's 
  parafiin-soap 
  mixture 
  were 
  not 
  conclusive, 
  as 
  

   the 
  numbers 
  of 
  galls 
  on 
  sprayed 
  and 
  unsprayed 
  trees 
  were 
  nearly 
  

   the 
  same. 
  The 
  paraffin 
  mixture 
  caused 
  the 
  needles 
  of 
  the 
  firs 
  to> 
  

   turn 
  a 
  brown 
  colour 
  and 
  drop 
  ofi, 
  which 
  is 
  possibly 
  to 
  be 
  attributed 
  

   to 
  the 
  double 
  quantity 
  of 
  kerosene 
  erroneously 
  taken 
  for 
  the 
  prepara- 
  

   tion 
  of 
  the 
  insecticide. 
  Tobacco 
  emulsion 
  did 
  not 
  damage 
  the 
  

   needles. 
  Both 
  insecticides 
  were 
  prepared 
  according 
  to 
  recipes 
  

   recommended 
  in 
  " 
  Arbeit 
  aus 
  der 
  Kais. 
  Biol. 
  Anst. 
  f. 
  Land, 
  und 
  

   Forstwirtschaft," 
  vol. 
  vi, 
  no. 
  2. 
  At 
  the 
  beginning 
  of 
  July, 
  Chermes 
  

   viridamis, 
  Cholodk., 
  appeared 
  in 
  large 
  numbers 
  on 
  larch 
  in 
  the 
  

   nurseries 
  of 
  Warsaw. 
  Spraying 
  with 
  the 
  usual 
  kerosene 
  soap- 
  emulsion 
  

   and 
  with 
  a 
  2 
  per 
  cent, 
  solution 
  of 
  " 
  milonaphtha 
  " 
  (soap-naphtha), 
  

   prepared 
  by 
  the 
  firm 
  of 
  Nobel 
  Bros., 
  proved 
  very 
  effective, 
  but 
  the 
  

   latter 
  remedy 
  caused 
  the 
  needles 
  to 
  turn 
  yellow. 
  

  

  Amongst 
  the 
  queries 
  as 
  to 
  remedies 
  against 
  insect 
  pests 
  addressed 
  

   to 
  the 
  Station 
  from 
  Russian 
  Poland 
  and 
  also 
  from 
  neighbouring 
  

   governments, 
  8 
  queries 
  related 
  to 
  Coccids, 
  10 
  to 
  Aphids, 
  6 
  to 
  Eriophyes 
  

   piri, 
  4 
  to 
  Schizoneura 
  lanigera, 
  which 
  a^ppeared 
  last 
  year 
  in 
  many 
  

   gardens 
  of 
  the 
  governments 
  of 
  Warsaw, 
  Kalish 
  and 
  Kieletzk, 
  6 
  to 
  

   larvae 
  of 
  Melolontha, 
  6 
  to 
  larvae 
  of 
  Elateridae 
  and 
  11 
  to 
  various 
  

   thrips, 
  which 
  injured 
  grain 
  crops. 
  

  

  M3BtcT'm 
  CyxyMCKOH 
  CaAOBOH 
  d 
  CenbCKO-XoaniicTBeHHOM 
  OnbiTHOil^ 
  

   CTaHL^iM. 
  [Bulletins 
  of 
  the 
  Horticultural 
  and 
  Agricultural 
  Sta- 
  

   tion], 
  Suchum, 
  no. 
  14, 
  1914, 
  pp. 
  11-15 
  and 
  62. 
  

  

  This 
  issue 
  of 
  the 
  Bulletins 
  consists 
  of 
  a 
  report 
  on 
  the' 
  work 
  of 
  the 
  

  

  