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  NEW 
  YORK 
  8TATE 
  MUSEUM 
  

  

  south 
  of 
  Hudson 
  are 
  known 
  as 
  the 
  Burden 
  iron 
  mines; 
  and, 
  on 
  

  

  account 
  of 
  their 
  extent 
  and 
  productiveness, 
  and 
  the 
  comparative 
  

  

  insignificance 
  of 
  the 
  Ulster 
  county 
  mines, 
  they 
  may 
  be 
  considered 
  

  

  as 
  practically 
  the 
  whole 
  of 
  this 
  group. 
  The 
  range 
  in 
  which 
  the 
  

  

  Burden 
  mines 
  are 
  opened 
  is 
  between 
  one 
  and 
  two 
  and 
  a-half 
  miles 
  

  

  east: 
  of 
  the 
  river, 
  (opposite 
  Catskill, 
  and 
  is 
  four 
  miles 
  in 
  length, 
  

  

  from 
  north 
  to 
  south. 
  It 
  lies 
  partly 
  in 
  the 
  town 
  of 
  Greenport 
  and 
  

  

  partly 
  in 
  Livingston. 
  The 
  ore 
  crops 
  out 
  in 
  the 
  western 
  face 
  and 
  

  

  near 
  the 
  crest 
  of 
  Plass 
  Hill 
  at 
  the 
  north, 
  and 
  in 
  Cedar 
  Hill 
  and 
  

  

  Moiunt 
  Thomas 
  at 
  the 
  south. 
  It 
  is 
  stratified, 
  and 
  its 
  bed 
  dips 
  at 
  

  

  angles 
  of 
  20° 
  to^ 
  40° 
  to 
  the 
  east. 
  

  

  The 
  first 
  mining 
  of 
  considerable 
  extent 
  done 
  on 
  this 
  range 
  was 
  

  

  in 
  1874. 
  

  

  LIME 
  AND 
  CEMENT. 
  

  

  Lime 
  is 
  produced 
  throughout 
  the 
  State 
  on 
  the 
  outcrops 
  of 
  the 
  

   Calciferous, 
  Trenton, 
  Niagara 
  and 
  Helderberg 
  limestonesi. 
  Some 
  

   of 
  the 
  chief 
  localities 
  are 
  Glens 
  Falls, 
  Howe's 
  Cave, 
  Rochester, 
  

   Buffalo, 
  Sing 
  Sing 
  , 
  Pleasantville 
  and 
  Tuckahoe. 
  Hydraulic 
  

   cement 
  or 
  water 
  lime 
  is 
  chiefly 
  produced 
  from 
  beds 
  of 
  hydraulic 
  

   limestone 
  in 
  the 
  Water 
  lime 
  group 
  at 
  the 
  base 
  of 
  the 
  Lower 
  

   Helderberg. 
  Rondout 
  and 
  Rosendale, 
  Howe's 
  Cave 
  and 
  the 
  

   vicinity 
  of 
  Syracuse 
  are 
  important 
  commercially 
  for 
  this 
  product. 
  

   At 
  Akron 
  and 
  Buffalo 
  much 
  water 
  lime 
  is 
  made, 
  but 
  from 
  a 
  lower 
  

   formation, 
  probably 
  the 
  Salina 
  Group. 
  

  

  Portland 
  cement 
  is 
  made 
  from 
  marl 
  and 
  clay 
  at 
  Warner's 
  near 
  

   '.yracuse, 
  and 
  at 
  Wayland, 
  Steuben 
  county; 
  from 
  lime 
  and 
  clay 
  

   Qear 
  Glens 
  Falls 
  and 
  at 
  other 
  points. 
  

  

  LIMESTONE 
  FOR 
  FLUX. 
  

  

  In 
  the 
  present 
  depressed 
  condition 
  of 
  the 
  manufacture 
  of 
  iron 
  

  

  in 
  New 
  York, 
  the 
  production 
  of 
  limestone 
  for 
  flux 
  is 
  but 
  a 
  small 
  

  

  industry. 
  

  

  Mineral 
  Paint 
  

  

  The 
  mineral 
  paint 
  of 
  New 
  York 
  state 
  is 
  from 
  comparatively 
  

   few 
  localities, 
  and 
  is 
  manufactured 
  from 
  rocks 
  of 
  five 
  formations: 
  

  

  1 
  From 
  Rossie 
  iron 
  ore. 
  

  

  2 
  From 
  Cambrian 
  red 
  and 
  green 
  slate, 
  near 
  Whitehall. 
  

  

  