﻿481 
  

  

  advantages 
  of 
  Paris 
  green, 
  which 
  is 
  easily 
  washed 
  down 
  by 
  rain 
  or 
  

   blown 
  away 
  by 
  wind 
  and 
  chokes 
  the 
  sprayers, 
  and 
  also 
  refers 
  to 
  some 
  

   previous 
  experiments 
  by 
  Sijazov 
  [see 
  this 
  Reiieiv, 
  Ser. 
  A, 
  ii, 
  p. 
  37] 
  

   and 
  to 
  the 
  history 
  of 
  " 
  Atlas 
  " 
  locusticide 
  in 
  South 
  Africa. 
  

  

  His 
  experiments 
  were 
  conducted 
  in 
  May 
  1913, 
  on 
  a 
  spot 
  near 
  the 
  

   Station 
  Dragomirovo, 
  in 
  the 
  district 
  of 
  Chodzent, 
  where 
  egg-masses 
  

   were 
  noticed 
  in 
  the 
  previous 
  autumn. 
  Various 
  stages 
  of 
  hoppers 
  were 
  

   found 
  at 
  this 
  time, 
  the 
  insects 
  keeping 
  in 
  small 
  scattered 
  swarms. 
  He 
  

   mentions 
  that 
  the 
  available 
  petroleum 
  torches 
  proved 
  quite 
  worthless 
  

   and 
  that 
  they 
  are 
  not 
  to 
  be 
  used 
  this 
  year. 
  He 
  experimented 
  first 
  

   with 
  hand-sprayers 
  and 
  afterwards 
  with 
  horse-drawni 
  ones. 
  For 
  the 
  

   hand-sprayers 
  he 
  used 
  a 
  solution 
  of 
  about 
  21 
  ozs. 
  of 
  the 
  locusticide 
  

   in 
  27 
  gallons 
  of 
  water 
  and 
  stronger 
  solutions, 
  and 
  varied 
  the 
  size 
  of 
  

   the 
  areas 
  on 
  which 
  a 
  given 
  amount 
  of 
  the 
  locusticide 
  was 
  used. 
  He 
  

   refers 
  to 
  the 
  difficulties 
  of 
  ascertaining 
  exactly 
  the 
  percentage 
  of 
  

   hoppers 
  destroyed, 
  but 
  concludes 
  that, 
  on 
  the 
  whole, 
  the 
  results 
  must 
  

   be 
  considered 
  satisfactory, 
  notwithstanding 
  the 
  rain, 
  w^hich 
  fell 
  

   26 
  hours 
  after 
  the 
  spraying 
  took 
  place. 
  

  

  AVith 
  horse-drawn 
  sprayers, 
  he 
  used 
  solutions 
  of 
  from 
  1 
  to 
  2J 
  lb. 
  of 
  

   NaoHAgOg 
  to 
  about 
  70 
  gallons 
  of 
  water, 
  and 
  the 
  results 
  were 
  highly 
  

   satisfactory. 
  The 
  death 
  of 
  the 
  locusts 
  began 
  7 
  to 
  8 
  hours 
  after 
  the 
  

   spraying 
  and 
  3 
  days 
  later, 
  the 
  destruction 
  of 
  the 
  pests 
  was 
  practically 
  

   complete, 
  but 
  on 
  this 
  occasion 
  the 
  weather 
  remained 
  fine. 
  Some 
  

   adjoining 
  plots 
  were 
  sprayed 
  with 
  Paris 
  green, 
  but 
  the 
  results 
  were 
  

   less 
  satisfactory. 
  

  

  The 
  author 
  further 
  points 
  out 
  that 
  the 
  cost 
  of 
  this 
  remedy 
  is 
  not 
  

   higher 
  than 
  that 
  of 
  Paris 
  green. 
  

  

  BoRODix 
  (Dr.). 
  HaujecTBiflx-b 
  ryceHMUbi 
  JiyroBoro 
  MOTbinbKa 
  wnw 
  

   cbparo 
  HepSfl. 
  [The 
  invasions 
  of 
  caterpillars 
  of 
  Phlyctaenodfis 
  

   sticticalis.] 
  — 
  «XyTOpflHMH'b.» 
  [Chiitoriamn,] 
  Poltava, 
  no. 
  20, 
  

   28th 
  May 
  1914, 
  pp. 
  593-594, 
  3 
  figs. 
  

  

  The 
  author 
  warns 
  the 
  agriculturists 
  of 
  the 
  possibility 
  of 
  a 
  large 
  

   outbreak 
  of 
  P. 
  sticticalis 
  in 
  1914, 
  similar 
  to 
  that 
  which 
  took 
  place 
  in 
  

   1901 
  in 
  22 
  governments 
  of 
  European 
  Russia. 
  He 
  gives 
  a 
  popular 
  

   account 
  of 
  these 
  pests, 
  their 
  breeding 
  habits, 
  damage 
  done, 
  etc., 
  and 
  

   figures 
  the 
  various 
  stages. 
  

  

  He 
  further 
  describes 
  the 
  usual 
  remedies 
  : 
  spraying 
  with 
  barium 
  

   chloride 
  and 
  with 
  Schweinfurt 
  green, 
  giving 
  recipes 
  for 
  the 
  prepara- 
  

   tion 
  of 
  these 
  mixtures 
  ; 
  hand-picking 
  ; 
  spraying 
  the 
  caterpillars 
  with 
  

   carbolic 
  or 
  kerosene 
  emulsion 
  or 
  tobacco-extract. 
  He 
  also 
  refers 
  to 
  

   the 
  usual 
  preventive 
  remedies 
  : 
  trenches 
  round 
  fields 
  and 
  plantations, 
  

   sticky 
  belts, 
  etc. 
  

  

  Dafert 
  (F. 
  W.) 
  & 
  KoRNAUTH 
  (R.R. 
  Karl.). 
  Bericht 
  Uber 
  die 
  Tatigkeit 
  

   der 
  k. 
  k. 
  landw.-chemischen 
  Versuchsstatioti 
  in 
  Wien 
  im 
  Jahre 
  1913. 
  

   [Report 
  on 
  work 
  done 
  at 
  the 
  Imperial 
  and 
  Royal 
  Agricultural 
  

   Chemical 
  Research 
  Station 
  in 
  Vienna 
  in 
  the 
  year 
  1913,] 
  pp. 
  80-95. 
  

   [Received 
  19th 
  June 
  1914.] 
  

  

  Aphids 
  caused 
  serious 
  damage 
  during 
  the 
  year, 
  especially 
  to 
  beet 
  

   and 
  hops, 
  and 
  were 
  very 
  difficult 
  to 
  control 
  on 
  the 
  former 
  except 
  on 
  

   the 
  seedlings 
  ; 
  on 
  hops, 
  tobacco-soap 
  sprays 
  were 
  found 
  effective. 
  

  

  