﻿1 
  LIMESTONES 
  OF 
  NEW 
  YORK 
  AND 
  THEIR 
  ECONOMIC 
  VALUE 
  433 
  

  

  The 
  Ckazy 
  limestone 
  is 
  of 
  high 
  purity 
  and 
  makes 
  a 
  most 
  ex 
  

   cellent 
  quality 
  of 
  lime. 
  

   The 
  following 
  is 
  an 
  analysis 
  made 
  by 
  D. 
  H. 
  Newland 
  : 
  

  

  Silica 
  72 
  

  

  Alumina 
  and 
  ferric 
  oxid 
  .39 
  

  

  Lime 
  carbonate 
  96 
  . 
  24 
  

  

  Magnesium 
  carbonate 
  3 
  . 
  02 
  

  

  100.37 
  

  

  The 
  quarries 
  are 
  near 
  the 
  railroad 
  and 
  the 
  product 
  can 
  be 
  

   easily 
  shipped. 
  

  

  Dutchess 
  county 
  

  

  The 
  limestones 
  in 
  the 
  eastern 
  part 
  of 
  the 
  county 
  are 
  a 
  continu- 
  

   ation 
  of 
  those 
  found 
  in 
  Westchester 
  co. 
  and 
  follow 
  the 
  line 
  

   of 
  the 
  Harlem 
  River 
  R. 
  R. 
  while 
  those 
  found 
  in 
  the 
  central 
  and 
  

   western 
  portions 
  of 
  the 
  county 
  are 
  a 
  continuation 
  of 
  the 
  Orange 
  

   co. 
  Cambrian 
  limestone 
  belts. 
  The 
  former 
  are 
  metamorphosed 
  

   limestones 
  and 
  partake 
  of 
  the 
  nature 
  of 
  marble, 
  being 
  highly 
  

   crystalline, 
  while 
  the 
  latter 
  are 
  not. 
  

  

  The 
  eastern 
  belt. 
  While 
  there 
  are 
  outcrops 
  of 
  the 
  limestone 
  at 
  

   a 
  number 
  of 
  points 
  in 
  the 
  valley 
  followed 
  by 
  the 
  Harlem 
  rail- 
  

   road, 
  only 
  two 
  large 
  openings 
  have 
  been 
  made. 
  These 
  are 
  at 
  

   Dover 
  Plairs 
  and 
  "South 
  Dover. 
  

  

  At 
  Dover 
  Flams 
  G. 
  and 
  J. 
  H. 
  Re*cha:u 
  havo 
  operated 
  a 
  quarry 
  

   along 
  the 
  highroad 
  one 
  half 
  mile 
  southeast 
  of 
  the 
  town. 
  The 
  

   rock 
  is 
  a 
  soft, 
  fine 
  grained 
  dolomite 
  of 
  gray 
  or 
  white 
  color. 
  The 
  

   opening 
  is 
  about 
  200 
  feet 
  long, 
  20 
  to 
  30 
  feet 
  wide 
  and 
  10 
  feet 
  

   deep. 
  No 
  analysis 
  was 
  made 
  of 
  the 
  stone 
  but 
  several 
  samples 
  

   were 
  examined 
  to 
  determine 
  their 
  insoluble 
  matter, 
  which 
  ran 
  

   from 
  2f 
  to 
  3$. 
  

  

  The 
  South 
  Dover 
  marble 
  co. 
  has 
  a 
  large 
  quarry 
  on 
  the 
  hill 
  two 
  

   and 
  one 
  half 
  miles 
  northeast 
  of 
  the 
  station. 
  The 
  rock 
  is 
  a 
  fine 
  

   grained 
  white 
  dolomite 
  and 
  has 
  hitherto 
  been 
  used 
  only 
  for 
  struc- 
  

   tural 
  purposes. 
  It 
  has 
  to 
  be 
  hauled 
  to 
  the 
  railway. 
  

  

  