﻿LIMESTONES 
  OF 
  NEW 
  YORK 
  AND 
  THEIR 
  ECONOMIC 
  VALUE 
  431 
  

  

  Upper 
  third 
  

  

  Silica 
  . 
  . 
  . 
  , 
  11.16 
  

  

  Ferric 
  oxid 
  1 
  . 
  15 
  

  

  Alumina 
  3.35 
  

  

  Lime 
  carbonate 
  , 
  79 
  . 
  06 
  

  

  Magnesia 
  carbonate 
  6 
  . 
  65 
  

  

  101.37 
  

  

  A 
  sample 
  of 
  Howecave 
  limestone 
  was 
  analyzed 
  by 
  O. 
  A. 
  

  

  €haeffer, 
  but 
  its 
  location 
  in 
  the 
  quarry 
  or 
  even 
  the 
  particular 
  

  

  quarry 
  are 
  not 
  given 
  so 
  that 
  it 
  has 
  little 
  value. 
  

  

  Lime 
  carbonate 
  97 
  . 
  24 
  

  

  Ferric 
  oxid 
  and 
  alumina 
  .73 
  

  

  Columbia 
  county 
  

   Becraft 
  limestone. 
  The 
  limestones 
  in 
  the 
  eastern 
  part 
  of 
  the 
  

   county 
  are 
  of 
  little 
  importance 
  on 
  account 
  of 
  their 
  impure 
  nature, 
  

   but 
  on 
  Becraft 
  mountain 
  east 
  of 
  Hudson 
  the 
  stone 
  has 
  been 
  ex- 
  

   tensively 
  quarried 
  for 
  a 
  number 
  of 
  years 
  to 
  supply 
  the 
  furnaces 
  

   at 
  Troy 
  with 
  flux. 
  The 
  quarries 
  are 
  all 
  owned 
  by 
  F. 
  W. 
  Jones. 
  

   The 
  limestone 
  is 
  a 
  coarsely 
  crystalline, 
  fossiliferous 
  rock, 
  of 
  

   moderately 
  pure 
  and 
  quite 
  uniform 
  character. 
  The 
  stone 
  has 
  to 
  

   be 
  hauled 
  600 
  to 
  1000 
  feet 
  to 
  the 
  railroad 
  siding, 
  thus 
  permitting 
  

   easy 
  shipment. 
  

  

  The 
  following 
  analyses, 
  no. 
  1 
  by 
  T. 
  Egleston 
  and 
  no. 
  2 
  by 
  the 
  

   chemist 
  of 
  the 
  Burden 
  iron 
  works 
  at 
  Troy 
  illustrate 
  the 
  character 
  

   of 
  the 
  stone: 
  1 
  2 
  

  

  Lime 
  51.40 
  

  

  Lime 
  carbonate 
  91.70 
  

  

  Carbon 
  dioxid 
  41 
  . 
  191 
  

  

  Magnesium 
  carbonate 
  3 
  . 
  51 
  

  

  Magnesia 
  2.233 
  

  

  Alumina 
  635 
  1.01 
  

  

  Ferric 
  oxid 
  1.819 
  .55 
  

  

  Silica 
  ; 
  1.842 
  1.89 
  

  

  Sulfur 
  dioxid 
  145 
  .049 
  

  

  Phosphorous 
  149 
  .022 
  

  

  Water 
  271 
  

  

  99.685 
  98.731 
  

  

  