LIME AND CEMENT INDUSTRIES 681 



$4,814,T71. ISTearlj 50^ of this was made in ^N'ew York by 29 

 works. In fact it was in 'New York state that the first natural 

 rock cement in this country was made, and the United States 

 exceeds all other countries of the world in the quantity of natural 

 cement produced. 



The following table gives the production in 1899. 



Production 1899 



No. of Product barrels VqIha 



■works (.300 pounds) vaiue 



Florida (1898) 1 7 500 7 500 



Georgia 1 13 000 9 750 



Illinois 3 537 094 187 983 



Indiana and Kentucky 19 2 922 453 1 022 858 



Kansas 2 150 000 60 000 



Maryland 4 362 000 . 144 800 



Minnesota 2 113 986 56 793 



:New York 29 4 689 167 2 813 500 



Ohio 3 34 557 17 279 



Pennsylvania 5 511 404 255 702 



Tennessee 1 10 000 8 000 



Texas 1 12 000 20 400 



Virginia 3 63 500 38 100 



West Virginia 1 52 727 21 090 



Wisconsin ... 1 396 291 151 992 



76 9 868 179 4 814 771 



From the above it is seen that in 1899 natural rock cement 

 was made in 16 states, by 76 firms. 



Natural rock cement industry 



The first in this country was made from waterlime rock in 

 1823, its nature being discovered by accident. It was found 

 while the Delaware and Hudson canal was being put through 

 Ulster county, and it was noticed that the lime which was burned 

 from certain strata near Hosendale hardened under water instead 

 of slaking. Similar discoveries followed rapidly at other locali- 

 ties, and as a result waterlime rock was found in western and 



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