﻿458 
  Seventh 
  Annual 
  Report 
  of 
  the 
  

  

  whereas, 
  little, 
  if 
  any, 
  oil, 
  is 
  now 
  made 
  in 
  that 
  way. 
  There 
  

   is 
  a 
  strong 
  prejudice 
  in 
  the 
  loinds 
  of 
  most 
  of 
  the 
  users 
  of 
  

   boiled 
  oil 
  in 
  favor 
  of 
  the 
  old-fashioned 
  " 
  kettle 
  boiled 
  " 
  oil. 
  Con- 
  

   sequently, 
  the 
  manufacturers 
  are 
  somewhat 
  averse 
  to 
  admitting 
  that 
  

   their 
  oils 
  arc 
  made 
  after 
  the 
  modern 
  fashion, 
  although 
  no 
  advan- 
  

   tages 
  can 
  be 
  claimed 
  for 
  the 
  old 
  way. 
  This 
  prejudice 
  in 
  favor 
  of 
  

   strongly 
  heated 
  oil 
  is 
  so 
  strong 
  that 
  the 
  dark 
  color 
  of 
  the 
  old 
  oil 
  

   is 
  imitated 
  by 
  many 
  manufacturers 
  by 
  using 
  dark 
  colored 
  driers, 
  

   although 
  it 
  is 
  perfectly 
  e^-ident 
  that 
  for 
  use 
  Avith 
  all 
  light 
  colored 
  

   pigments 
  the 
  lighter 
  an 
  oil 
  is 
  in 
  color, 
  other 
  things 
  being 
  equal, 
  the 
  

   more 
  desirable 
  the 
  oil 
  is. 
  This 
  prejudice 
  seems 
  to 
  be 
  stronger 
  in 
  the 
  

   east 
  than 
  in 
  the 
  western 
  States. 
  

  

  Section 
  1 
  of 
  chapter 
  412 
  of 
  the 
  law 
  relating 
  to 
  lin&eed 
  or 
  flaxseed 
  

   oil 
  prohibits 
  the 
  manufacture 
  or 
  sale 
  as 
  boiled 
  linseed 
  oil, 
  of 
  oil 
  

   which 
  has 
  not 
  been 
  heated 
  to 
  225° 
  F. 
  The 
  intention 
  of 
  this 
  pro- 
  

   vision 
  is 
  undoubtedly 
  to 
  prevent 
  the 
  manufacture 
  of 
  " 
  bunghole 
  " 
  

   oil, 
  but 
  it 
  is 
  difficult 
  to 
  imderstand 
  whv 
  an 
  oil 
  should 
  be 
  excluded 
  

   if 
  it 
  is 
  made 
  from 
  proper 
  materials 
  at 
  a 
  lower 
  temjDerature, 
  and 
  still 
  

   more 
  difficult 
  for 
  an 
  analyist 
  toi 
  ascertain 
  the 
  temperature 
  to 
  which 
  

   the 
  oil 
  has 
  really 
  been 
  heated. 
  ]^o 
  means 
  are 
  known 
  to 
  me 
  by 
  

   which 
  it 
  is 
  possible 
  to 
  find 
  ont 
  whether 
  a 
  sample 
  of 
  boiled 
  linseed 
  oil 
  

   has 
  or 
  has 
  not 
  been 
  heated 
  to 
  225° 
  F. 
  

  

  The 
  analytical 
  investigation 
  of 
  linseed 
  oil 
  and 
  its 
  adulterants 
  was 
  

   carried 
  on 
  with 
  the 
  idea, 
  first, 
  of 
  ascertaining 
  the 
  character 
  of 
  pure 
  

   linseed 
  oil 
  sold 
  in 
  ISTew 
  York 
  State 
  by 
  vai*ious 
  manufacturers; 
  sec- 
  

   ondly, 
  to 
  ascertain 
  what 
  the 
  adulterants 
  conunonly 
  used 
  in 
  the 
  State 
  

   are, 
  and, 
  thirdly, 
  how 
  prevalent 
  the 
  practice 
  of 
  adulteration 
  is. 
  With 
  

   these 
  ends 
  in 
  view, 
  a 
  series 
  of 
  samples 
  was 
  obtained, 
  in 
  most 
  cases 
  

   directly 
  from 
  the 
  manufacturers, 
  but 
  partly 
  also 
  from 
  large 
  users 
  

   of 
  the 
  oil, 
  which 
  are 
  of 
  imdoHbted 
  coanmercial 
  purity. 
  Another 
  

   series 
  of 
  samples 
  Avas 
  obtained 
  by 
  purchase 
  from 
  smaller 
  dealers. 
  

   Samples 
  of 
  oils 
  likely 
  to 
  be 
  used 
  as 
  adulterants 
  were 
  obtained 
  from 
  

   manufacturers 
  or 
  large 
  dealers. 
  

  

  