﻿681 
  

  

  Seegent 
  (E.) 
  & 
  Lheritier 
  (A.). 
  Essai 
  de 
  destruction 
  des 
  Sauterelles 
  

   en 
  Alg6rie 
  par 
  le 
  Coccobacillus 
  acridiorum 
  de 
  d'H6relle. 
  [Trials 
  

   in 
  locust 
  destruction 
  in 
  Algeria 
  by 
  the 
  Coccobacillus 
  acridio- 
  

   rum 
  of 
  d'Herelle.] 
  — 
  Bull. 
  Soc. 
  Nat.d'Acclimat., 
  Paris, 
  Ixi, 
  no. 
  14, 
  

   15th 
  July 
  1914, 
  pp. 
  456-467. 
  

  

  As 
  a 
  result 
  of 
  these 
  first 
  trials 
  in 
  locust 
  destruction 
  in 
  Algeria 
  

   by 
  Coccobacillus 
  acridiorum, 
  the 
  follownng 
  conclusions 
  are 
  reached 
  : 
  

  

  (1) 
  The 
  power 
  of 
  the 
  virus 
  may 
  be 
  increased 
  until 
  it 
  becomes 
  

   capable 
  of 
  kilUng 
  Stauronotus 
  maroccanus 
  in 
  4 
  hours 
  on 
  an 
  average. 
  

  

  (2) 
  Groups 
  of 
  Stauronotus 
  were 
  infected 
  by 
  spraying 
  the 
  nocturnal 
  

   resting 
  places 
  with 
  Coccobacillus 
  cultures 
  ; 
  a 
  heavy 
  mortality 
  followed 
  

   such 
  spraying, 
  after 
  an 
  incubation 
  period 
  of 
  a 
  few 
  days. 
  (3) 
  In 
  this 
  

   short 
  trial 
  the 
  infection 
  spread 
  but 
  sUghtly 
  to 
  other 
  groups 
  which 
  

   adjoined 
  the 
  infected 
  one 
  [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  p. 
  238-239]. 
  

  

  Arnal 
  (A.). 
  Preparation 
  des 
  bouillies 
  cupriques 
  mouillantes 
  et 
  adh6- 
  

   rentes 
  par 
  I'addition 
  de 
  cas^ine. 
  [The 
  preparation 
  of 
  wetting 
  and 
  

   adherent 
  copper 
  sprays 
  by 
  the 
  addition 
  of 
  casein.] 
  — 
  Rev. 
  Maladies 
  

   des 
  Plantes, 
  Paris, 
  ii, 
  no. 
  2, 
  15th 
  July 
  1914, 
  pp. 
  9-10. 
  

  

  So-called 
  " 
  soluble 
  caseins 
  " 
  have 
  been 
  put 
  on 
  the 
  market 
  to 
  

   overcome 
  the 
  difficulty 
  that 
  sometimes 
  occurs 
  when 
  preparing 
  

   Bordeaux 
  and 
  Burgundy 
  sprays, 
  which 
  must 
  be 
  alkahne, 
  with 
  ordinary 
  

   casein. 
  The 
  quantity 
  of 
  soluble 
  casein 
  for 
  30 
  gallons 
  of 
  spray 
  costs 
  

   2^d., 
  the 
  cost 
  of 
  ordinary 
  casein 
  being 
  Id. 
  For 
  Bordeaux 
  spray, 
  

   4 
  J 
  oz. 
  of 
  soluble 
  casein 
  are 
  dissolved 
  in 
  22 
  J 
  oz. 
  of 
  hot 
  water 
  until 
  a 
  

   sticky 
  paste 
  is 
  obtained, 
  to 
  which 
  1| 
  pints 
  of 
  milk 
  of 
  lime 
  are 
  slowly 
  

   added 
  with 
  constant 
  and 
  vigorous 
  stirring. 
  This 
  mixture 
  is 
  then 
  

   poured 
  into 
  30 
  gallons 
  of 
  alkaline 
  Bordeaux 
  spray. 
  In 
  the 
  case 
  of 
  

   Burgundy 
  spray 
  (alkahne) 
  the 
  milk 
  of 
  Hme 
  is 
  replaced 
  by 
  If 
  pints 
  

   of 
  a 
  10 
  per 
  cent, 
  solution 
  of 
  carbonate 
  of 
  soda. 
  

  

  P. 
  F. 
  Bekampfungsversuche 
  des 
  Heuwurms 
  mit 
  chemischen 
  Mitteln 
  

   wahrend 
  1914. 
  [Experiments 
  in 
  the 
  chemical 
  control 
  of 
  the 
  first 
  

   generation 
  of 
  Clysia 
  ambigudla 
  during 
  1914.] 
  — 
  Luxemburger 
  

   Weinztg., 
  Grevenmacher, 
  ii, 
  no. 
  14, 
  15th 
  July 
  1914, 
  pp. 
  218-222. 
  

  

  The 
  results 
  achieved 
  in 
  controlUng 
  the 
  first 
  generation 
  of 
  Clysia 
  

   ambiguella 
  with 
  the 
  seven 
  insecticides 
  officially 
  adopted 
  in 
  Luxemburg 
  

   [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  p. 
  538] 
  are 
  tabulated. 
  Infestation 
  was 
  

   only 
  shght 
  this 
  year, 
  so 
  that 
  no 
  definite 
  conclusions 
  could 
  be 
  reached, 
  

   but 
  in 
  every 
  case 
  treatment 
  decreased 
  the 
  number 
  of 
  larvae. 
  Scorch- 
  

   ing 
  occurred 
  wherever 
  treatment 
  was 
  apphed. 
  It 
  was 
  usually 
  shght 
  

   in 
  character, 
  though 
  there 
  were 
  some 
  instances 
  of 
  severe 
  injury. 
  This 
  

   difference 
  is 
  due 
  to 
  the 
  weather, 
  to 
  the 
  cultural 
  conditions 
  of 
  the 
  ^dnes 
  

   and 
  to 
  the 
  varying 
  time 
  of 
  day 
  when 
  control 
  was 
  applied. 
  The 
  least 
  

   injury 
  was 
  caused 
  by 
  Laycotin, 
  Laymann's 
  nicotin 
  powder, 
  and 
  the 
  

   three 
  formulae 
  of 
  tobacco 
  extract 
  solution. 
  The 
  first 
  of 
  these 
  contained 
  

   \\ 
  per 
  cent, 
  of 
  tobacco 
  extract 
  (10 
  per 
  cent, 
  nicotin), 
  1 
  per 
  cent, 
  of 
  

   copper 
  sulphate, 
  1 
  per 
  cent, 
  of 
  hme, 
  and 
  J 
  per 
  cent, 
  of 
  soap. 
  The 
  

   other 
  two 
  formulae 
  were 
  identical, 
  except 
  that 
  the 
  soap 
  was 
  omitted 
  

   in 
  one 
  of 
  them 
  and 
  the 
  copper 
  sulphate 
  in 
  the 
  other. 
  " 
  Schachen- 
  

   muhle 
  " 
  nicotin, 
  Golazin-Itotsi, 
  Conchycid, 
  and 
  Muth's 
  emulsion 
  

  

  