﻿sprayed 
  with 
  arsenicals. 
  Another 
  cabbage 
  worm 
  found 
  in 
  Montana, 
  

   the 
  larva 
  of 
  the 
  diamond-back 
  moth 
  (Plutella 
  maculipennis), 
  is 
  amenable 
  

   to 
  the 
  same 
  measures. 
  

  

  The 
  cabbage 
  aphis 
  {Aphis 
  brassicae, 
  L.), 
  also 
  uses 
  crop 
  remnants 
  

   for 
  depositing 
  its 
  eggs, 
  and 
  since 
  weeds, 
  such 
  as 
  wild 
  mustard 
  and 
  shep- 
  

   herd's 
  purse, 
  serve 
  as 
  breeding 
  places 
  for 
  the 
  early 
  generations 
  of 
  the 
  

   lice, 
  they 
  should 
  not 
  be 
  tolerated 
  near 
  cabbage 
  fields. 
  

  

  A 
  most 
  effective 
  spray 
  is 
  : 
  Black 
  leaf 
  tobacco 
  extract, 
  8 
  oz. 
  ; 
  soap, 
  

   4 
  oz. 
  ; 
  water, 
  4 
  gals. 
  If 
  " 
  Black 
  Leaf 
  40 
  " 
  is 
  used, 
  only 
  3-4 
  oz. 
  need 
  

   be 
  taken. 
  The 
  soap 
  makes 
  the 
  spray 
  spread 
  evenly 
  on 
  the 
  waxy 
  

   surface 
  of 
  the 
  cabbage 
  and 
  makes 
  it 
  penetrate 
  the 
  mealy 
  covering 
  of 
  

   the 
  lice. 
  Failing 
  tobacco 
  extract, 
  a 
  good 
  alternative 
  is 
  a 
  strong 
  

   solution 
  of 
  soap 
  ; 
  soap 
  or 
  washing 
  powder 
  1 
  lb., 
  and 
  water 
  4 
  gals. 
  ; 
  

   and 
  for 
  cauliflowers 
  its 
  non-staining 
  property 
  is 
  a 
  real 
  advantage. 
  

  

  Clerc 
  (G. 
  0.). 
  Rapport 
  sur 
  une 
  mission 
  dans 
  le 
  gouvernment 
  d'Oufa 
  

   pour 
  determiner 
  les 
  insectes 
  depr^dateurs 
  et 
  indiquer 
  les 
  moyens 
  de 
  

   les 
  combattre. 
  [Report 
  of 
  a 
  commission 
  in 
  the 
  Govt, 
  of 
  Oufa, 
  

   for 
  the 
  determination 
  of 
  insect 
  pests 
  and 
  the 
  means 
  of 
  combating 
  

   them.] 
  — 
  Bull, 
  de 
  la 
  Soc. 
  Ouralienne, 
  Amat. 
  Sci. 
  Nat., 
  Ekateritiburgj 
  

   xxxii, 
  no. 
  2, 
  1913, 
  pp. 
  140-145. 
  

  

  In 
  July 
  1912, 
  the 
  author 
  made 
  an 
  expedition 
  into 
  the 
  district 
  of 
  

   Oufa 
  with 
  the 
  purpose 
  of 
  examining 
  crops 
  which 
  were 
  being 
  destroyed 
  

   ty 
  insects. 
  In 
  the 
  neighbourhood 
  of 
  Belebei, 
  the 
  crops 
  of 
  wheat 
  and 
  

   oats 
  had 
  at 
  first 
  been 
  very 
  promising, 
  but, 
  as 
  the 
  summer 
  advanced 
  

   they 
  were 
  attacked 
  by 
  insects, 
  and 
  it 
  was 
  evident 
  that 
  the 
  harvest 
  

   would 
  be 
  reduced 
  to 
  anything 
  between 
  50% 
  and 
  0% 
  of 
  the 
  usual. 
  

   As 
  the 
  weather 
  at 
  the 
  time 
  of 
  examination 
  was 
  unfavourable 
  for 
  

   finding 
  insects, 
  the 
  author 
  did 
  not 
  succeed 
  in 
  catching 
  any 
  adults, 
  but 
  

   he 
  obtained 
  a 
  large 
  number 
  of 
  pupae 
  of 
  Mayetiola 
  {Cecidomyia) 
  des- 
  

   iructor, 
  Say, 
  and 
  of 
  Oscinis 
  frit, 
  L. 
  Plants 
  which 
  were 
  unattacked 
  

   by 
  these 
  insects 
  were 
  often 
  infested 
  with 
  Thrips. 
  

  

  In 
  the 
  district 
  of 
  Birsk 
  the 
  condition 
  of 
  the 
  crops 
  was 
  even 
  worse, 
  

   especially 
  in 
  the 
  case 
  of 
  wheat. 
  Aphididae, 
  Cecidomyia, 
  Oscinis 
  and 
  

   Thrips 
  were 
  found 
  in 
  abundance. 
  Oats 
  had 
  suffered 
  principally 
  

   from 
  Aphididae 
  and 
  Oscinis. 
  Fields 
  of 
  millet 
  and 
  buckwheat 
  were 
  

   unattacked. 
  The 
  author 
  advocates 
  ploughing 
  the 
  fields 
  to 
  a 
  depth 
  

   of 
  16-20 
  cms. 
  (6*4"-8"), 
  and 
  burning 
  the 
  stubble 
  with 
  the 
  roots 
  before 
  

   Cecidomyia 
  and 
  Oscinis 
  emerge 
  from 
  their 
  cocoons. 
  

  

  O^SAR 
  (L.). 
  Our 
  most 
  troublesome 
  orchard 
  insects 
  and 
  diseases. 
  — 
  

  

  Forty-fourth 
  Annual 
  Report 
  of 
  the 
  Fruit 
  Groivers' 
  Association 
  of 
  

   Ontario 
  for 
  1912, 
  Ontario 
  Dept. 
  Agric, 
  Toronto, 
  1913, 
  pp. 
  13-3i, 
  

   19 
  figs. 
  

  

  The 
  title 
  sufficiently 
  explains 
  the 
  scope 
  of 
  this 
  paper 
  (see 
  this 
  

   Review, 
  Ser. 
  A, 
  i, 
  p. 
  404), 
  in 
  which 
  the 
  author 
  also 
  gives 
  a 
  fist 
  of 
  

   remedies 
  and 
  notes 
  on 
  the 
  methods 
  of 
  their 
  employment. 
  

  

  