﻿402 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  At 
  the 
  present 
  day 
  natural 
  rock 
  cement 
  is 
  made 
  in 
  14 
  states, 
  in- 
  

   cluding 
  100 
  plants 
  and 
  70 
  firms. 
  Their 
  production 
  is 
  as 
  follows: 
  

  

  T-viotriPt 
  No. 
  Am. 
  outs. 
  Pe>- 
  cent 
  

  

  UMmCT 
  firms 
  in 
  bbl. 
  of 
  total 
  

  

  Eosendale 
  15 
  3 
  500 
  000 
  41 
  . 
  9 
  

  

  Louisville, 
  Ky. 
  and 
  Indiana 
  15 
  1 
  750 
  000 
  20.9 
  

  

  Pa. 
  dist. 
  Lehigh 
  valley 
  , 
  6 
  750 
  000 
  8. 
  97 
  

  

  Erie 
  co. 
  N. 
  Y 
  4 
  550 
  000 
  6.59 
  

  

  Illinois 
  2 
  550 
  000 
  6.57 
  

  

  Milwaukee 
  dist 
  1 
  475 
  000 
  5 
  . 
  68 
  

  

  Maryland 
  and 
  West 
  Virginia 
  . 
  . 
  5 
  275 
  000 
  3 
  . 
  28 
  

  

  Schoharie 
  and 
  Onondaga 
  dist 
  10 
  200 
  000 
  - 
  2.39 
  

  

  Kansas 
  . 
  2 
  140 
  000 
  1 
  . 
  68 
  

  

  Minnesota 
  2 
  85 
  000 
  1 
  .02 
  

  

  Ohio 
  3 
  35 
  000 
  .42 
  

  

  Virginia 
  " 
  3 
  20 
  000 
  .24 
  

  

  Georgia 
  1 
  15 
  000 
  .18 
  

  

  Texas 
  '. 
  1 
  15 
  000 
  .18 
  

  

  NATURAL 
  ROCK 
  CEMENT 
  INDUSTRY 
  

  

  The 
  first 
  cement 
  in 
  this 
  country 
  was 
  made 
  from 
  water 
  lime- 
  

   rock 
  in 
  1823, 
  its 
  nature 
  being 
  discovered 
  by 
  accident. 
  It 
  was 
  

   found 
  while 
  the 
  D. 
  & 
  H. 
  canal 
  was 
  being 
  put 
  through 
  Ulster 
  

   co.' 
  and 
  it 
  was 
  notice 
  that 
  the 
  lime 
  which 
  was 
  burned 
  from 
  cer- 
  

   tain 
  strata 
  near 
  Rosendale 
  hardened 
  under 
  water 
  instead 
  of 
  slak- 
  

   ing. 
  Similar 
  discoveries 
  followed 
  rapidly 
  at 
  other 
  localities, 
  and 
  

   as 
  a 
  result 
  water 
  limerock 
  was 
  found 
  in 
  western 
  and 
  central 
  

   New 
  York, 
  in 
  the 
  Lehigh 
  valley 
  of 
  Pennsylvania, 
  in 
  the 
  James, 
  

   Potomac, 
  and 
  Ohio 
  river 
  valleys, 
  the 
  result 
  beine; 
  that 
  natural 
  

   rock 
  cements 
  were 
  made 
  at 
  all 
  these 
  localities 
  at 
  a 
  comparatively 
  

   early 
  date. 
  

  

  In 
  1897 
  the 
  total 
  production 
  of 
  natural 
  rock 
  cement 
  was 
  7,781,- 
  

   377 
  -barrels. 
  This 
  was 
  unequaled 
  by 
  any 
  other 
  country, 
  the 
  near- 
  

   est 
  approach 
  to 
  it 
  being 
  France 
  with 
  6,000,000 
  to 
  7,000,000 
  bbl. 
  a 
  

   year 
  of 
  both 
  hydraulic 
  limes 
  and 
  hydraulic 
  cements. 
  

  

  The 
  United 
  States 
  is 
  probably 
  in 
  the 
  lead, 
  due 
  to 
  excellence 
  

   and 
  abundance 
  of 
  raw 
  materials. 
  Greatest 
  production 
  was 
  in 
  

   1892. 
  Since 
  then 
  both 
  product 
  and 
  price 
  have 
  decreased. 
  One 
  

   reason 
  for 
  this 
  is 
  the 
  increase 
  in 
  the 
  portland 
  cement 
  industry. 
  

  

  