﻿411 
  

  

  per 
  cent, 
  of 
  pyridin 
  is 
  efficacious 
  against 
  the 
  caterpillars. 
  Commercial 
  

   oleate 
  of 
  pyridin 
  employed 
  at 
  these 
  strengths 
  is 
  ineffective, 
  owing 
  to 
  

   its 
  small 
  pyridin 
  content. 
  A 
  wetting 
  spray 
  containing 
  1 
  per 
  cent, 
  

   of 
  quinoline 
  is 
  effective 
  against 
  P. 
  hotrana 
  larvae 
  ; 
  \ 
  per 
  cent, 
  is 
  not. 
  

   Dusting 
  is 
  a 
  less 
  effective 
  method 
  than 
  spraying. 
  Nicotined 
  sulphur 
  

   and 
  quicklime 
  are 
  the 
  best 
  for 
  dusting. 
  Sulphoricinate 
  of 
  ammonia 
  

   has 
  good 
  wetting, 
  sticking 
  and 
  insecticidal 
  properties, 
  but 
  at 
  strengths 
  

   over 
  J 
  per 
  cent, 
  it 
  injures 
  the 
  plants. 
  It 
  may 
  be 
  combined 
  in 
  order 
  

   to 
  reduce 
  its 
  causticity. 
  At 
  the 
  low 
  strength 
  of 
  0*2 
  per 
  1,000 
  as 
  a 
  

   spray, 
  it 
  retains 
  its 
  whetting 
  property. 
  Thymol 
  at 
  a 
  strength 
  of 
  1 
  per 
  

   cent, 
  and 
  associated 
  with 
  resin 
  soap 
  is 
  effective. 
  The 
  author 
  mentions 
  

   the 
  use 
  of 
  bait 
  traps 
  [see 
  this 
  Review, 
  Ser. 
  A, 
  ii, 
  pp. 
  405 
  and 
  below] 
  

   and 
  states 
  that 
  shelter 
  traps 
  have 
  given 
  good 
  results 
  in 
  Burgundy. 
  

   Strips 
  of 
  cloth 
  about 
  16 
  to 
  20 
  inches 
  long 
  were 
  wrapped 
  round 
  the 
  vine 
  

   trunk, 
  if 
  possible 
  at 
  a 
  bend 
  or 
  fork 
  of 
  the 
  branches, 
  and 
  on 
  examining 
  

   these 
  in 
  December 
  they 
  averaged 
  3 
  pupae 
  each. 
  The 
  collected 
  trap 
  

   material 
  should 
  be 
  stored 
  till 
  spring 
  in 
  order 
  to 
  allow 
  the 
  parasitic 
  

   Hymenoptera 
  to 
  hatch 
  out 
  ; 
  they 
  emerge 
  from 
  the 
  cocoons 
  before 
  the 
  

   moths. 
  The 
  author 
  mentions 
  parasitic 
  fungi 
  [see 
  this 
  Review, 
  Series 
  

   A, 
  ii, 
  p. 
  405], 
  but 
  states 
  that 
  control 
  by 
  means 
  of 
  them 
  was 
  not 
  

   satisfactory. 
  The 
  earthing 
  up 
  of 
  the 
  stocks 
  in 
  autumn 
  was 
  tried 
  on 
  a 
  

   small 
  scale 
  in 
  Saone-et-Loire 
  and 
  merits 
  attention. 
  It 
  favours 
  the 
  

   destruction 
  of 
  the 
  pupae 
  by 
  fungi, 
  and 
  when 
  combined 
  with 
  the 
  system 
  

   of 
  shelter 
  traps 
  recommended 
  by 
  Jablonowski 
  in 
  Hungary, 
  effects 
  very 
  

   considerable 
  destruction. 
  Winter 
  treatment 
  is 
  the 
  only 
  one 
  of 
  great 
  

   efficacy 
  in 
  the 
  South. 
  

  

  Vezin 
  & 
  Gaumont 
  (L.). 
  La 
  Cochylis 
  et 
  rEud6mis 
  dans 
  la 
  valine 
  de 
  

   la 
  Loire. 
  [Clysia 
  and 
  PolycJirosis 
  in 
  the 
  Loire 
  valley.] 
  — 
  Ann. 
  du 
  

   Service 
  des 
  Epiphyties 
  (1912), 
  PariSy 
  1913, 
  pp. 
  331-338. 
  [Received 
  

   18th 
  Feb. 
  1914.] 
  

  

  Bait 
  and 
  light 
  traps 
  were 
  tried 
  against 
  the 
  first 
  generation 
  of 
  moths. 
  

   Eighteen 
  bait-traps 
  were 
  employed, 
  but 
  no 
  Clysia 
  were 
  captured. 
  

   Six 
  light 
  traps 
  captured 
  141 
  moths. 
  The 
  Andres-Maire 
  trap, 
  as 
  used 
  

   in 
  Egjrpt 
  against 
  the 
  cotton 
  moth, 
  was 
  placed 
  in 
  position 
  at 
  La 
  

   Justinier 
  on 
  the 
  13th 
  of 
  May 
  and 
  by 
  the 
  20th, 
  over 
  200 
  vine 
  Sphingids 
  

   and 
  other 
  insects 
  were 
  taken, 
  but 
  no 
  Clysia. 
  This 
  was 
  ascribed 
  to 
  

   the 
  trap 
  being 
  about 
  4J 
  feet 
  above 
  the 
  ground, 
  while 
  Clysia 
  flies 
  at 
  a 
  

   height 
  of 
  about 
  2J 
  feet. 
  Experiments 
  were 
  to 
  be 
  continued 
  in 
  1913 
  

   with 
  the 
  trap 
  in 
  a 
  lower 
  position. 
  In 
  dealing 
  with 
  the 
  second 
  genera- 
  

   tion 
  of 
  moths 
  the 
  6 
  light 
  traps 
  already 
  mentioned 
  were 
  made 
  use 
  of. 
  

   They 
  captured 
  116 
  Clysia, 
  691 
  Sparganothis,M3 
  parasitic 
  Hymenoptera 
  

   and 
  673 
  Diptera, 
  besides 
  other 
  Lepidoptera. 
  Such 
  traps 
  may 
  be 
  an 
  

   efficacious 
  means 
  of 
  trapping 
  Sparganothis 
  and 
  Clysia, 
  but 
  the 
  most 
  

   beneficial 
  insects 
  are 
  also 
  taken. 
  Of 
  the 
  various 
  insecticides 
  used, 
  

   an 
  emulsion 
  meriting 
  attention 
  contained 
  3 
  lb. 
  benzine, 
  3 
  lb. 
  ammonia, 
  

   and 
  10 
  gals, 
  of 
  a 
  decoction 
  of 
  Panama 
  wood 
  (Quillaiasaponaria),m.3ide 
  

   by 
  boiling 
  1 
  lb. 
  of 
  the 
  wood 
  in 
  10 
  gals, 
  of 
  water. 
  In 
  the 
  laboratory 
  

   tests, 
  batches 
  of 
  10 
  caterpillars 
  each 
  were 
  sprayed 
  with 
  this 
  and 
  a 
  

   mortality 
  ranging 
  from 
  5 
  to 
  8 
  resulted. 
  An 
  emulsion 
  containing 
  1 
  lb. 
  

   of 
  rectified 
  benzine 
  in 
  2 
  gals, 
  of 
  the 
  above 
  decoction 
  seems 
  to 
  be 
  the 
  

   most 
  efficacious, 
  6 
  to 
  9 
  caterpillars 
  being 
  killed. 
  The 
  benzine 
  should 
  

  

  (C46) 
  A 
  2 
  

  

  