﻿14S 
  

  

  Prof. 
  Adams, 
  in 
  his 
  report 
  on 
  the 
  Geology 
  of 
  Vermont, 
  (1S46,) 
  de- 
  

   scribes 
  crystals 
  of 
  magnetic 
  iron 
  as 
  occurring 
  in 
  granular 
  specular 
  iron. 
  

   In 
  some 
  cases 
  they 
  are 
  partly, 
  and 
  in 
  others 
  wholly, 
  converted 
  into 
  pe- 
  

   roxide 
  of 
  iron. 
  They 
  are 
  found 
  in 
  Chittenden, 
  adjoining 
  Lake 
  Cham- 
  

   plain. 
  

  

  Several 
  new 
  localities 
  of 
  common 
  magnetic 
  iron 
  have 
  been 
  discover- 
  

   ed 
  since 
  the 
  publication 
  of 
  my 
  Mineralogy, 
  especially 
  in 
  the 
  northern 
  

   parts 
  of 
  the 
  State. 
  I 
  will 
  only 
  particularize 
  its 
  occurrence 
  in 
  beds 
  in 
  

   the 
  gneiss 
  rock 
  of 
  Greig, 
  Lewis 
  county. 
  It 
  is 
  supposed 
  to 
  exist 
  in 
  some 
  

   quantity, 
  but 
  it 
  is 
  associated 
  with 
  iron 
  pyrites, 
  and 
  requires 
  to 
  be 
  puri- 
  

   fied 
  by 
  the 
  magnet. 
  This 
  is 
  said 
  to 
  be 
  the 
  only 
  known 
  locality 
  of 
  mag- 
  

   netic 
  iron 
  ore 
  on 
  the 
  western 
  side 
  of 
  the 
  great 
  northern 
  forest 
  of 
  New- 
  

   York. 
  F. 
  B. 
  Hough, 
  Sill. 
  Jour., 
  Jan., 
  1848. 
  

  

  The 
  sanguine 
  anticipations 
  which 
  were 
  at 
  one 
  time 
  entertained 
  in 
  

   regard 
  to 
  the 
  conversion 
  of 
  the 
  magnetic 
  iron 
  ore 
  into 
  steel 
  by 
  a 
  direct 
  

   process, 
  have 
  not 
  been 
  realized. 
  This 
  is 
  no 
  matter 
  of 
  surprise 
  to 
  those 
  

   who 
  had 
  carefully 
  studied 
  the 
  nature 
  of 
  steel 
  and 
  the 
  peculiarities 
  of 
  

   structure 
  to 
  which 
  it 
  owes 
  its 
  value. 
  None 
  but 
  the 
  most 
  visionary 
  per- 
  

   sons 
  would 
  have 
  sanctioned 
  expenditures 
  based 
  upon 
  such 
  erroneous 
  

   views. 
  

  

  I 
  may 
  add 
  here 
  the 
  composition 
  of 
  the 
  cast 
  and 
  forged 
  iron 
  from 
  the 
  

   ore 
  of 
  the 
  Long 
  mine, 
  in 
  Orange 
  county. 
  The 
  cast 
  iron 
  contains 
  carbon 
  

   2-390; 
  silicium 
  1-904; 
  phosphorus 
  0-027; 
  sulphur 
  0'004; 
  iron 
  

   95-603. 
  

  

  The 
  forged 
  iron 
  contains, 
  silicic 
  acid 
  0*532; 
  phosphorus 
  0*023 
  ; 
  

   sulphur 
  0-001; 
  iron, 
  carbon 
  and 
  loss 
  94*443. 
  The 
  cast 
  iron 
  contains 
  

   traces 
  of 
  cobalt 
  and 
  nickel. 
  Berzelius 
  1 
  Annual 
  Report, 
  1847. 
  

  

  IRON 
  PYRITES. 
  

   (Mineralogy 
  of 
  New- 
  York, 
  page 
  287.) 
  

   To 
  the 
  interesting 
  crystalline 
  forms 
  of 
  this 
  mineral, 
  figured 
  in 
  my 
  

   Mineralogy, 
  I 
  may 
  add 
  that 
  here 
  introduced, 
  which 
  has 
  been 
  figured 
  by 
  

  

  Mr. 
  Dana 
  from 
  a 
  crystal 
  from 
  Rossie, 
  St. 
  Lawrence 
  county, 
  in 
  the 
  pos- 
  

   session 
  of 
  Dr. 
  Emmons. 
  Sill. 
  Jour., 
  xlvi., 
  p. 
  36. 
  

  

  I 
  

  

  