﻿157 
  

  

  was 
  quite 
  different 
  from 
  that 
  produced 
  by 
  the 
  South 
  of 
  France 
  fomi. 
  

   From 
  this 
  the 
  author 
  has 
  concluded 
  that 
  there 
  are 
  two 
  species 
  of 
  vine 
  

   louse 
  ; 
  he 
  has 
  called 
  that 
  found 
  in 
  Lorraine 
  P. 
  pervastatrix. 
  In 
  the 
  

   course 
  of 
  his 
  experiments 
  he 
  proved 
  that 
  pervastatrix 
  could 
  not 
  

   adapt 
  itself 
  to 
  certain 
  vines. 
  According 
  to 
  their 
  behaviour 
  when 
  

   attacked 
  by 
  this 
  louse, 
  cultivated 
  vines 
  are 
  divided 
  into 
  four 
  groups 
  : 
  — 
  

   (1) 
  Immune 
  vines 
  ; 
  (2) 
  vines 
  which 
  are 
  resistant, 
  but 
  which 
  are 
  

   subject 
  to 
  shght 
  attacks 
  ; 
  (3) 
  vines 
  whose 
  leaves 
  bear 
  small, 
  mostly 
  

   sterile 
  galls, 
  but 
  whose 
  roots 
  bear 
  nodules 
  and 
  tubercles 
  ; 
  they 
  favour 
  

   the 
  development 
  of 
  the 
  louse, 
  but 
  are 
  to 
  a 
  certain 
  extent 
  resistant 
  ; 
  

   (4) 
  Susceptible 
  vines, 
  on 
  which 
  the 
  normal 
  galls 
  are 
  formed 
  on 
  the 
  

   leaves 
  and 
  nodules 
  on 
  the 
  roots, 
  which 
  favour 
  the 
  development 
  of 
  the 
  

   louse 
  and 
  have 
  "^o 
  resistant 
  power. 
  The 
  first 
  class 
  includes 
  the 
  fol- 
  

   lowing 
  : 
  — 
  Pure 
  strains 
  of 
  Vitis 
  riparia, 
  V. 
  rubra 
  and 
  various 
  hybrids 
  

   such 
  as 
  riparia 
  x 
  rupestris, 
  Conderc 
  3306, 
  3309, 
  Geisenheim 
  107 
  ; 
  solonis 
  

   X 
  riparia 
  1616a 
  ; 
  Cabernet 
  x 
  rupestris 
  33a 
  ; 
  cordifolia 
  X 
  rupestris, 
  

   Geisenheim 
  19 
  and 
  20, 
  etc. 
  Immunity 
  would 
  appear 
  to 
  act 
  as 
  a 
  

   MendeHan 
  dominant 
  and 
  is 
  transmitted 
  when 
  an 
  immune 
  species 
  is 
  

   crossed 
  with 
  one 
  that 
  is 
  not 
  immune 
  ; 
  it 
  is 
  independent 
  of 
  outside 
  

   factors 
  such 
  as 
  temperature, 
  moisture, 
  season, 
  and 
  the 
  food 
  supply 
  of 
  

   the 
  plant. 
  The 
  second 
  class 
  includes 
  the 
  following 
  vines 
  : 
  — 
  aramion 
  

   X 
  rupestris, 
  Ganzin 
  Nr. 
  1 
  ; 
  Mourvedre 
  x 
  rupestris, 
  1202 
  ; 
  riparia 
  x 
  

   Gamay, 
  Oberlin 
  595 
  and 
  604, 
  aramion 
  x 
  riparia, 
  Teleky 
  143 
  B, 
  etc. 
  

   Vines 
  of 
  the 
  third 
  class 
  are 
  the 
  hybrids 
  riparia 
  x 
  rupestris 
  101 
  

   (Bouisset, 
  Geisenheim, 
  Lohnberg, 
  Kichtee), 
  175 
  (Geisenheim) 
  ; 
  riparia 
  

   X 
  vinifera 
  44 
  (Laquenexy) 
  ; 
  solonis 
  x 
  vinifera 
  35 
  (Laquenexy) 
  ; 
  

   Madeleine 
  royal 
  xnj9ana 
  33 
  (Laquenexy). 
  To 
  the 
  fourth 
  class 
  belong 
  

   the 
  majority 
  of 
  cultivated 
  vines, 
  particularly 
  the 
  European 
  species 
  of 
  

   Vitis 
  vinifera 
  and 
  silvestris, 
  pure 
  strains 
  and 
  hybrids 
  of 
  Vitis 
  lahrusca, 
  

   the 
  species 
  of 
  the 
  American 
  vines 
  Vitis 
  berlandieri, 
  cordifolia 
  and 
  

   monticola, 
  and 
  many 
  hybrids. 
  

  

  Tea 
  mosquito. 
  — 
  Qtrly 
  Jl. 
  Scient. 
  Dept. 
  Ind. 
  Tea 
  Assoc, 
  Calcutta, 
  Part 
  

   4, 
  1913, 
  pp. 
  98-99. 
  

  

  A 
  fumigating 
  preparation 
  known 
  as 
  sulphur-cake 
  and 
  produced 
  in 
  

   Hamburg 
  is 
  reported 
  to 
  have 
  been 
  highly 
  successful 
  against 
  the 
  tea 
  

   mosquito 
  (Helopeltis) 
  in 
  Java. 
  When 
  hghted, 
  heavy 
  fumes 
  penetrate 
  

   into 
  the 
  tea 
  bushes. 
  In 
  view 
  of 
  this, 
  an 
  experiment 
  was 
  made 
  on 
  the 
  

   Leesh 
  Kiver 
  Tea 
  Estate, 
  but 
  the 
  results 
  obtained 
  were 
  very 
  disappoint- 
  

   ing. 
  At 
  the 
  time 
  of 
  this 
  experiment 
  the 
  bugs 
  were 
  beginning 
  to 
  

   spread 
  over 
  the 
  area, 
  and 
  the 
  sulphur-cakes 
  do 
  not 
  seem 
  to 
  have 
  

   checked 
  them, 
  for 
  three 
  weeks 
  later 
  the 
  Manager 
  wrote 
  : 
  — 
  " 
  .... 
  the 
  plot 
  

   we 
  experimented 
  on 
  is 
  just 
  as 
  bad 
  as 
  the 
  rest. 
  The 
  sulphur 
  had 
  no 
  

   effect 
  upon 
  it." 
  

  

  Andrews 
  (E. 
  A.). 
  White 
  ants. 
  — 
  Qtrly 
  Jl. 
  Scient. 
  Dept. 
  Ind. 
  Tea. 
  

   Assoc, 
  Calcutta, 
  Part. 
  4, 
  1913, 
  pp. 
  96-97. 
  

  

  A 
  " 
  Universal 
  " 
  white 
  ant 
  machine 
  was 
  found 
  effective 
  on 
  an 
  old 
  

   colony 
  of 
  a 
  mound-building 
  species 
  of 
  termite 
  which 
  was 
  killing 
  out 
  

   a 
  Gold 
  Mohur 
  tree. 
  The 
  nest 
  was 
  some 
  five 
  feet 
  in 
  diameter 
  and 
  about 
  

   the 
  same 
  in 
  depth, 
  and 
  the 
  roots 
  on 
  one 
  side 
  of 
  the 
  tree 
  were 
  entirely 
  

  

  