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  bodies 
  ; 
  (2) 
  it 
  may 
  be 
  due 
  to 
  the 
  fact 
  that 
  he 
  experimented 
  only 
  on 
  

   Schistocerca 
  pallens 
  and 
  S. 
  paranensis 
  ; 
  (3) 
  he 
  used 
  adult 
  locusts 
  and 
  

   not 
  hoppers, 
  and 
  that 
  insects 
  resist 
  the 
  bacillus 
  least 
  when 
  they 
  are 
  

   nearest 
  death 
  is 
  a 
  well-known 
  theory 
  ; 
  or 
  (4) 
  his 
  success 
  may 
  be 
  due 
  

   to 
  the 
  fact 
  that 
  the 
  climate 
  of 
  Argentina, 
  where 
  M. 
  d'Herelle 
  worked, 
  

   is 
  warmer 
  and 
  moister 
  than 
  that 
  of 
  the 
  Tagremaret 
  district; 
  these 
  

   two 
  factors 
  are 
  always 
  of 
  great 
  importance 
  in 
  insect 
  life. 
  Dr. 
  Sergent 
  

   is 
  continuing 
  his 
  experiments 
  with 
  the 
  hope 
  of 
  getting 
  practical 
  results. 
  

  

  J. 
  D. 
  Die 
  Kosten 
  der 
  Schadlingsbekampfung. 
  [The 
  cost 
  of 
  combating 
  

   pests.] 
  — 
  Luxemhurger 
  Weinzfg., 
  Grevenmacher, 
  ii, 
  no. 
  1, 
  1st 
  Jan. 
  

   1914, 
  pp. 
  12-14. 
  

  

  As 
  the 
  calculations 
  pubhshed 
  by 
  numerous 
  journals 
  differ 
  rather 
  

   considerably, 
  the 
  author 
  gives 
  the 
  costs 
  based 
  on 
  his 
  personal 
  experience 
  

   and 
  on 
  accurate 
  data 
  collected 
  from 
  vine-growers. 
  They 
  cover 
  the 
  cost 
  

   of 
  the 
  material 
  necessary 
  for 
  a 
  rational 
  and 
  thorough 
  campaign 
  against 
  

   plant 
  and 
  animal 
  enemies 
  of 
  the 
  grape 
  vine, 
  but 
  do 
  not 
  include 
  cartage, 
  

   wages, 
  or 
  any 
  other 
  cultural 
  expenses. 
  

  

  Spraying 
  against 
  Pewnospora. 
  A 
  2 
  per 
  cent. 
  Bordeaux 
  mixture 
  

   was 
  applied 
  three 
  times 
  a 
  year 
  on 
  an 
  average. 
  To 
  be 
  of 
  use, 
  thorough 
  

   sprapng 
  is 
  essential 
  and 
  for 
  this 
  194 
  gals, 
  of 
  mixture, 
  or 
  39 
  lb. 
  of 
  

   copper-sulphate 
  and 
  39 
  lb. 
  of 
  Ume, 
  are 
  required 
  per 
  acre 
  for 
  each 
  apph- 
  

   cation. 
  The 
  Grevenmacher 
  Vine-growlers' 
  Association 
  supphes 
  its 
  

   members 
  ^^4th 
  Bordeaux 
  mixture 
  ready 
  for 
  use 
  at 
  approximately 
  

   Is. 
  for 
  20 
  gals. 
  This 
  entails 
  an 
  outlay 
  of 
  £1 
  9^. 
  6d. 
  per 
  acre 
  for 
  three 
  

   apphcations 
  and 
  the 
  protection 
  of 
  the 
  4,000 
  odd 
  acres 
  of 
  vineyards 
  

   in 
  Luxemburg 
  means 
  an 
  expenditure 
  of 
  £5,900. 
  

  

  Sulphuring. 
  As 
  a 
  rule 
  three 
  applications 
  are 
  necessary, 
  and 
  for 
  

   these 
  66 
  lb. 
  of 
  sulphur 
  are 
  required 
  per 
  acre 
  at 
  a 
  cost 
  of 
  about 
  95. 
  per 
  

   100 
  lb. 
  This 
  w^orks 
  out 
  at 
  about 
  65. 
  per 
  acre, 
  or 
  £1,200 
  for 
  the 
  4,000 
  

   acres 
  of 
  vineyards 
  in 
  Luxemburg. 
  

  

  Vine-moth 
  control. 
  According 
  to 
  tests 
  made 
  in 
  1913, 
  it 
  is 
  necessary 
  

   to 
  spray 
  w^th 
  nicotin 
  t\N'ice 
  a 
  year 
  if 
  any 
  result 
  w^orthy 
  of 
  the 
  name 
  13 
  

   to 
  be 
  attained. 
  It 
  appears 
  best 
  to 
  make 
  up 
  22 
  gals, 
  of 
  spray 
  solution 
  

   with 
  3 
  lb. 
  3 
  oz. 
  of 
  copper-sulphate, 
  3 
  lb. 
  3 
  oz. 
  of 
  nicotin 
  extract 
  at 
  

   Is. 
  Id. 
  per 
  lb. 
  and 
  1 
  lb. 
  10 
  oz. 
  of 
  soft 
  soap. 
  This 
  costs 
  about 
  4s'. 
  6d. 
  

   For 
  a 
  single 
  application 
  132 
  gals, 
  are 
  required 
  per 
  acre, 
  or 
  264 
  gals, 
  a 
  

   year. 
  The 
  cost 
  per 
  acre 
  per 
  year 
  is 
  about 
  54^., 
  and 
  the 
  expenditure 
  

   for 
  Luxemburg 
  would 
  be 
  about 
  £10,800. 
  The 
  total 
  expenditure 
  for 
  

   4,000 
  acres 
  will 
  amount 
  to 
  over 
  £18,000 
  per 
  year, 
  or 
  £4 
  IO5. 
  per 
  acre. 
  

   As 
  already 
  stated 
  this 
  only 
  covers 
  cost 
  of 
  material 
  required 
  for 
  control 
  

   purposes. 
  

  

  Schilling 
  (K.). 
  Sur 
  Bekampfung 
  des 
  Heu- 
  und 
  Sauerwurms. 
  [Com- 
  

   bating 
  the 
  vine-moth.] 
  — 
  Luxemhurger 
  Weinztg., 
  Grevenmacher, 
  ii, 
  

   no. 
  2, 
  15th 
  Jan. 
  1914, 
  pp. 
  28-30 
  

  

  At 
  Geisenheim 
  vine-moth 
  control 
  in 
  1913 
  included 
  several 
  trials 
  

   which 
  gave 
  results 
  as 
  foUow^s 
  : 
  — 
  The 
  insecticide 
  " 
  Golazin 
  I'totsi 
  " 
  was 
  

   used 
  w4th 
  success 
  against 
  the 
  second 
  generation 
  of 
  the 
  vine-moth 
  and 
  

   the 
  grapes 
  remained 
  unharmed. 
  They 
  were 
  also 
  free 
  from 
  stem-rot. 
  

   A 
  quart 
  of 
  this 
  insecticide 
  cost 
  35. 
  6d., 
  and 
  2 
  quarts 
  diluted 
  in 
  25 
  gals. 
  

   of 
  water 
  at 
  once 
  gave 
  the 
  2 
  per 
  cent, 
  working 
  solution. 
  On 
  an 
  average 
  

  

  