﻿412 
  

  

  be 
  mixed 
  with 
  a 
  little 
  black 
  soap 
  and 
  the 
  mixture 
  emulsified 
  with 
  the 
  

   decoction. 
  The 
  old 
  leaves 
  and 
  woody 
  shoots 
  do 
  not 
  appear 
  to 
  suffer 
  ; 
  

   an 
  investigation 
  of 
  the 
  effect 
  on 
  young 
  grapes 
  and 
  young 
  leaves 
  will 
  

   be 
  made. 
  The 
  Barsacq 
  liquid 
  contains 
  2 
  lb. 
  of 
  Panama 
  wood 
  and 
  

   1 
  gal. 
  of 
  methylated 
  spirit 
  in 
  7 
  gals, 
  of 
  water. 
  For 
  use 
  it 
  is 
  diluted 
  

   with 
  9 
  volumes 
  of 
  water 
  and 
  the 
  authors 
  find 
  it 
  causes 
  a 
  mortality 
  of 
  

   about 
  50 
  per 
  cent. 
  They 
  also 
  tried 
  to 
  effect 
  the 
  destruction 
  of 
  the 
  

   pupae, 
  but 
  the 
  results 
  were 
  most 
  disappointing. 
  

  

  The 
  collection 
  of 
  Clysia 
  larvae 
  is 
  efl&cacious, 
  but 
  in 
  the 
  case 
  of 
  

   Polychrosis 
  this 
  method 
  is 
  much 
  less 
  useful, 
  because 
  of 
  the 
  more 
  

   numerous 
  generations 
  and 
  the 
  constant 
  presence 
  of 
  all 
  forms 
  of 
  the 
  

   insect 
  during 
  the 
  fine 
  season. 
  

  

  Savastano 
  (L.). 
  La 
  manipolazione 
  della 
  poltiglia 
  solfo-calcica. 
  (For- 
  

   mola 
  della 
  Stazione 
  di 
  Agrumicoltura.) 
  [The 
  preparation 
  of 
  lime- 
  

   sulphur 
  mixture. 
  (Formula 
  of 
  the 
  Station 
  for 
  Citrus 
  culture).] 
  — 
  

   Boll. 
  R. 
  Staz. 
  Speriment. 
  Agrum. 
  Fruttic, 
  Acireale, 
  no. 
  2, 
  Jan. 
  

   1912, 
  6 
  pp. 
  [Received 
  24th 
  Feb. 
  1913.] 
  

  

  Although 
  published 
  over 
  two 
  years 
  ago, 
  this 
  paper 
  is 
  abstracted 
  

   here 
  in 
  order 
  to 
  place 
  on 
  record 
  formula 
  recommended 
  in 
  it 
  

   which 
  may 
  be 
  regarded 
  as 
  a 
  standard, 
  and 
  is 
  said 
  to 
  be 
  thoroughly 
  

   rehable, 
  being 
  the 
  result 
  of 
  prolonged 
  experiment. 
  It 
  consists 
  

   of 
  1 
  part 
  by 
  weight 
  of 
  lime 
  and 
  3 
  parts 
  by 
  weight 
  of 
  sulphur 
  

   to 
  every 
  10 
  parts 
  by 
  weight 
  of 
  water. 
  Ordinary 
  sulphur 
  is 
  employed, 
  

   as 
  used 
  against 
  Oidium. 
  The 
  lime 
  must 
  be 
  freshly 
  burned, 
  not 
  

   more 
  than 
  2 
  or 
  3 
  days 
  old 
  at 
  the 
  outside 
  (when 
  it 
  begins 
  to 
  

   crumble 
  it 
  is 
  useless), 
  and 
  must 
  be 
  in 
  moderately 
  small 
  pieces, 
  

   very 
  small 
  pieces 
  or 
  big 
  lumps 
  being 
  equally 
  unsuitable. 
  It 
  should 
  

   be 
  broken 
  up 
  and 
  examined 
  before 
  weighing, 
  any 
  insufficiently 
  

   burned 
  pieces 
  being 
  rejected, 
  and 
  should 
  preferably 
  be 
  burned 
  

   with 
  wood 
  fuel. 
  Iron 
  boilers 
  must 
  be 
  used, 
  copper 
  being 
  attacked 
  

   by 
  the 
  mixture. 
  The 
  mixture 
  may 
  be 
  prepared 
  on 
  a 
  small 
  scale 
  

   (35 
  pints) 
  for 
  domestic 
  use 
  or 
  on 
  a 
  large 
  scale 
  (22 
  gals.), 
  the 
  

   respective 
  boilers 
  measuring 
  approximately 
  15 
  by 
  16 
  inches 
  and 
  22 
  

   by 
  34 
  inches. 
  A 
  galvanized 
  iron 
  pail 
  is 
  required 
  for 
  measuring 
  the 
  

   water, 
  the 
  levels 
  for 
  8f 
  pints 
  and 
  17^ 
  pints 
  being 
  marked 
  inside. 
  A 
  

   stick 
  about 
  5 
  feet 
  long 
  is 
  required 
  for 
  gauging 
  the 
  level 
  of 
  the 
  mixture 
  

   in 
  the 
  small 
  boiler 
  during 
  boiling 
  (a 
  notch 
  being 
  made 
  at 
  the 
  level 
  of 
  

   35 
  pints), 
  a 
  7 
  foot 
  stick 
  being 
  used 
  for 
  the 
  large 
  boiler 
  (notched 
  at 
  the 
  

   level 
  of 
  22 
  gals.). 
  For 
  stirring 
  the 
  mixture 
  a 
  stout 
  stick 
  is 
  required, 
  

   and 
  a 
  wire 
  sieve 
  should 
  be 
  used 
  for 
  rapidly 
  dissolving 
  the 
  sulphur. 
  

   The 
  quantity 
  of 
  35 
  pints 
  for 
  the 
  small 
  boiler 
  should 
  not 
  be 
  departed 
  

   from, 
  but 
  that 
  of 
  22 
  gals, 
  for 
  the 
  large 
  boiler 
  may 
  be 
  reduced 
  to 
  11 
  

   gals. 
  The 
  agriculturist 
  should 
  not 
  attempt 
  other 
  changes 
  or 
  dis- 
  

   appointment 
  may 
  result. 
  The 
  actual 
  preparation 
  is 
  as 
  follows 
  : 
  — 
  

   The 
  boiler 
  is 
  placed 
  on 
  a 
  moderate 
  fire 
  with 
  water 
  — 
  8f 
  pints 
  for 
  the 
  

   small 
  boiler 
  and 
  35 
  pints 
  for 
  the 
  large 
  one. 
  When 
  the 
  water 
  is 
  just 
  

   tepid 
  the 
  pieces 
  of 
  lime 
  are 
  thrown 
  in. 
  No 
  stirring 
  should 
  be 
  done. 
  

   When 
  the 
  lime 
  begins 
  to 
  boil 
  the 
  sulphur 
  is 
  added, 
  by 
  being 
  passed 
  

   through 
  the 
  sieve 
  held 
  over 
  the 
  boiler. 
  Until 
  the 
  operator 
  is 
  expert 
  

   he 
  should 
  get 
  a 
  second 
  person 
  to 
  sift 
  the 
  sulphur, 
  while 
  he 
  stirs 
  the 
  

   mixture 
  himself. 
  Carelessness 
  may 
  lead 
  to 
  the 
  lime 
  absorbing 
  all 
  the 
  

  

  