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  The 
  following 
  is 
  a 
  list 
  of 
  towns 
  in 
  which 
  Bureaux 
  exist 
  : 
  — 
  Moscow, 
  

   Tula, 
  Kursk, 
  Charkov, 
  Poltava, 
  Ekaterinoslav, 
  Cherson, 
  Simferopol, 
  

   Orel, 
  Stavropol, 
  Vladikavkaz, 
  Astrachan, 
  Tiflis, 
  Tashkent, 
  Kishinev, 
  

   Kiev, 
  Smiela, 
  Voronezh, 
  Baku, 
  Riga, 
  Orenburg, 
  Kaluga, 
  and 
  Warsaw. 
  

  

  IVANOV(V.P.). 
  3aMapMBaHie 
  KOKOHOBTj 
  Ha(J)TanMH0MT3. 
  [The 
  destruc- 
  

   tion 
  (of 
  silkworm 
  pupae 
  in) 
  the 
  cocoon 
  by 
  means 
  of 
  Naphthalin.] 
  

   — 
  « 
  MsBtcTifl 
  KaBKaacKOM 
  LLIenKOBOflCTBeHHOii 
  CiaHuin 
  » 
  [Bulletin 
  

   of 
  the 
  Caucasian 
  Silk-groiving 
  Station] 
  for 
  1913, 
  Tiflis, 
  1913, 
  pt. 
  3, 
  

   pp. 
  1-8. 
  

  

  The 
  Caucasian 
  Silk-growing 
  Station 
  has 
  made 
  use 
  of 
  naphthalin 
  

   as 
  a 
  means 
  of 
  destroying 
  the 
  pupae 
  inside 
  the 
  cocoons. 
  The 
  advantages 
  

   of 
  this 
  method, 
  besides 
  being 
  more 
  convenient 
  than 
  those 
  already 
  in 
  

   use, 
  are 
  that 
  the 
  cocoons 
  do 
  not 
  lose 
  their 
  brilliance 
  and 
  colour, 
  which 
  

   is 
  not 
  the 
  case 
  when 
  the 
  pupae 
  are 
  killed 
  by 
  means 
  of 
  steam. 
  The 
  

   author 
  has 
  been 
  experimenting 
  whether 
  it 
  would 
  not 
  be 
  possible 
  to 
  use 
  

   naphthalin 
  also 
  in 
  case 
  of 
  cocoons 
  which 
  are 
  intended 
  for 
  industrial 
  

   purposes, 
  and 
  how 
  far 
  and 
  in 
  what 
  way 
  naphthahn 
  will 
  affect 
  the 
  

   quaUties 
  of 
  the 
  silk 
  wound 
  from 
  such 
  cocoons. 
  As 
  a 
  result 
  he 
  concludes 
  

   that 
  naphthalin 
  cannot 
  be 
  recommended. 
  The 
  minimum 
  time 
  

   necessary 
  to 
  kill 
  pupae 
  by 
  means 
  of 
  naphthalin 
  is 
  about 
  48 
  hours. 
  

  

  Trjebinski 
  (Dr. 
  J.). 
  Experiment 
  with 
  Insecticides. 
  — 
  OlMeTTj 
  3a 
  

   1912-11 
  roAi) 
  oO-b 
  opraHHsauiw 
  m 
  AtfiTenbHOCTM 
  CTaHuiid 
  oxpaHbi 
  

   paCTeHJM 
  BTj 
  BapiuaB't. 
  [Report 
  for 
  1912 
  on 
  the 
  organisation 
  and 
  

   activity 
  of 
  the 
  Station 
  for 
  the 
  Protection 
  of 
  Plants 
  in 
  Warsaw,] 
  

   Warsaw, 
  1913, 
  19 
  pp., 
  4 
  figs. 
  

  

  This 
  is 
  a 
  report 
  by 
  Dr. 
  Joseph 
  Trjebinski 
  on 
  the 
  Warsaw 
  Station, 
  

   which 
  was 
  established 
  in 
  1911, 
  and 
  consists 
  chiefly 
  of 
  a 
  description 
  of 
  

   the 
  organisation 
  of 
  the 
  Station 
  (buildings, 
  staff, 
  Ubrary, 
  scientific 
  

   apparatus, 
  collections, 
  etc.) 
  and 
  also 
  short 
  records 
  of 
  some 
  experiments 
  

   conducted 
  there 
  on 
  remedies 
  against 
  fungus 
  diseases 
  of 
  plants 
  and 
  on 
  

   some 
  insect 
  pests. 
  So 
  far 
  as 
  the 
  latter 
  class 
  of 
  experiments 
  is 
  concerned, 
  

   the 
  report 
  mentions 
  : 
  — 
  (1) 
  Experiments 
  against 
  Coccids 
  on 
  Fraxinus 
  

   excelsior 
  : 
  the 
  smearing 
  of 
  the 
  branches 
  of 
  these 
  trees 
  with 
  (a) 
  milk 
  of 
  

   lime, 
  (6) 
  '' 
  Scalecide 
  " 
  (15 
  per 
  cent.), 
  (c) 
  calcium 
  polysulphide 
  (15 
  

   per 
  cent, 
  and 
  20 
  per 
  cent.), 
  (d) 
  carbohc 
  emulsion 
  (50 
  cm. 
  of 
  carbolic 
  

   acid 
  and 
  20 
  grms. 
  of 
  soap 
  in 
  one 
  htre 
  of 
  water), 
  (e) 
  carbolineum 
  and 
  Ume 
  

   (15 
  grams 
  of 
  carbolineum 
  and 
  150 
  grms. 
  of 
  hme 
  in 
  one 
  htre 
  of 
  water), 
  

   (/) 
  naphtha 
  soap 
  emulsion 
  (25 
  grms. 
  of 
  hquid 
  soap, 
  J 
  htre 
  of 
  water 
  and 
  J 
  

   litre 
  of 
  naphtha, 
  the 
  whole 
  being 
  dissolved 
  in 
  ten 
  times 
  the 
  amount 
  

   of 
  water), 
  and 
  (g) 
  5 
  per 
  cent, 
  solution 
  of 
  soda 
  ; 
  which 
  showed 
  that 
  

   the 
  most 
  effective 
  remedies 
  were 
  soda, 
  scalecide 
  and 
  naphtha 
  emulsion, 
  

   none 
  of 
  which 
  injured 
  the 
  bark 
  of 
  the 
  trees. 
  

  

  (2) 
  Experiments 
  against 
  larvae 
  of 
  Elateridae 
  in 
  strawberry-beds 
  ; 
  

   these 
  consisted 
  in 
  the 
  digging 
  into 
  the 
  soil 
  of 
  lime, 
  saltpetre, 
  sulphate 
  

   of 
  iron 
  dissolved 
  in 
  liquid 
  manure, 
  and 
  in 
  burying 
  trap 
  potatoes 
  ; 
  

   the 
  results 
  showed 
  that 
  while 
  hme 
  and 
  saltpetre 
  keep 
  away 
  the 
  larvae 
  

   from 
  the 
  roots 
  of 
  strawberries 
  for 
  a 
  short 
  time 
  only, 
  sulphate 
  of 
  iron 
  

   has 
  no 
  effect 
  at 
  all, 
  and 
  the 
  larvae 
  were 
  found 
  in 
  the 
  potatoes 
  only 
  

   after 
  the 
  expiration 
  of 
  two 
  weeks. 
  

  

  