﻿588 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum, 
  

  

  The 
  millstones 
  vary 
  in 
  size 
  and 
  thus 
  greatly 
  in 
  price. 
  For 
  mill- 
  

   ing, 
  stones 
  are 
  quarried 
  from 
  fifteen 
  inches 
  to 
  seven 
  feet 
  in 
  

   diameter. 
  The 
  smaller 
  stones 
  vary 
  in 
  price 
  from 
  $5 
  to 
  $15, 
  

   while 
  the 
  seven-foot 
  stones 
  from 
  $50 
  to 
  $100. 
  The 
  millstones 
  

   are 
  used 
  for 
  grinding, 
  chasers 
  for 
  crushing. 
  Blocks 
  twelve 
  by 
  

   twelve 
  by 
  ten 
  inches 
  are 
  used 
  for 
  paving 
  the 
  chaser 
  floors. 
  

   These 
  and 
  the 
  chasers 
  are 
  used 
  in 
  quartz 
  and 
  feldspar 
  mills, 
  

   principally 
  for 
  preparing 
  these 
  materials 
  for 
  potters' 
  use. 
  

  

  At 
  Ellenville 
  this 
  stone 
  is 
  quarried 
  for 
  glassmaking 
  by 
  the 
  

   Crystal 
  Glass 
  and 
  Manufacturing 
  Company. 
  They 
  quarry 
  800 
  

   tons 
  per 
  year. 
  The 
  stone 
  is 
  crushed 
  and 
  ground 
  at 
  Ellenville 
  and 
  

   shipped 
  to 
  glass 
  companies 
  in 
  Pennsylvania 
  and 
  at 
  Port 
  

   Jervis, 
  K 
  Y. 
  

  

  Steam 
  power 
  is 
  used 
  at 
  the 
  crushing 
  mill. 
  

  

  Road 
  Metal. 
  

  

  The 
  rocks 
  available 
  for 
  this 
  purpose 
  in 
  Ulster 
  county 
  differ 
  in 
  

   no. 
  respect 
  from 
  those 
  in 
  Albany 
  county. 
  The 
  geologic 
  horizons 
  

   are 
  practically 
  identical, 
  save 
  that 
  the 
  cement 
  and 
  flagstones 
  are 
  

   better 
  developed. 
  In 
  the 
  citv 
  of 
  Rondout 
  the 
  Cauda-galli 
  grit 
  

   is 
  well 
  exposed 
  on 
  Hasbrouck 
  avenue. 
  Just 
  east 
  of 
  the 
  West 
  

   Shore 
  railroad 
  station, 
  on 
  the 
  line 
  of 
  the 
  electric 
  car 
  tracks, 
  

   are 
  large 
  outcrops 
  of 
  the 
  Corniferous 
  limestone. 
  Both 
  of 
  these 
  

   outcrops 
  have 
  been 
  worked 
  for 
  road 
  metal. 
  

  

  In 
  regard 
  to 
  the 
  use 
  of 
  the 
  Cauda-galli 
  grit, 
  the 
  Hon. 
  James 
  

   G. 
  Lindsley 
  informed 
  the 
  writer 
  that 
  it 
  had 
  been 
  used 
  to 
  a 
  con- 
  

   siderable 
  extent, 
  but 
  its 
  use 
  had 
  been 
  abandoned. 
  The 
  rock, 
  

   even 
  though 
  it 
  may 
  appear 
  quite 
  solid 
  when 
  first 
  taken 
  out, 
  soon 
  

   air-checks 
  and 
  breaks 
  into 
  fine 
  angular 
  fragments. 
  When 
  put 
  into 
  

   roads 
  light 
  travel 
  soon 
  reduces 
  it 
  to 
  a 
  smooth 
  surface 
  and 
  a 
  

   tolerably 
  compact 
  bed. 
  For 
  heavy 
  traffic 
  the 
  material 
  is 
  of 
  

   inferior 
  value 
  and 
  its 
  use 
  as 
  a 
  road 
  metal 
  has 
  practically 
  been 
  

   discontinued. 
  

  

  The 
  Corniferous 
  limestone 
  before 
  referred 
  to 
  is 
  being 
  worked 
  

   to 
  some 
  extent. 
  Mr. 
  Thomas 
  Lynch, 
  of 
  Kingston, 
  has 
  a 
  stone 
  

   crasher, 
  with 
  steam 
  for 
  power 
  drills. 
  He 
  crushes 
  eigh'y 
  tons 
  of 
  

   stone 
  a 
  day 
  for 
  two 
  months 
  per 
  year. 
  He 
  employs 
  twelve 
  men. 
  

   The 
  stone 
  is 
  used 
  for 
  macadamizing 
  the 
  roads 
  in 
  the 
  vicinity 
  of 
  

   Kingston. 
  

  

  