262 
CEMENT MATERIALS AND INDUSTRY. 
[bull. 243. 
Analyses 1 and 3, below, are quoted by Cummings (American Cement 
p. 253), while 2 and 4 were furnished by the Empire company. 
Analyses of cement-making material used at Warners, N. Y. 
Silica (Si0 2 ) 
Alumina (A1 2 3 ) 
Iron oxide (Fe 2 3 ) 
Lime carbonate ( CaC0 3 ) 
Magnesium carbonate (MgC0 3 * 
Potash (K a 0) 
Sulphur trioxide (S0 3 ) 
Organic 
Water-floss 
Marl. 
0.26 
.10 
0.26 
Clay. 
40.48 
94.39 
.38 
.01 
91.03 
.40 
1 } 20. 95 
1.54 
3.10 
1.68 
6.30 
25.80 
.99 
3.14 
8.50 
42. 
13.5 i 
4.4 
22. 66 1 
6.95 
3. 0* 
2. SI 
This clay runs higher in lime than any other used in the State, th< i 
clay showing the nearest approach to it being that used at Wayland 
which carries a little less than 20 per cent of lime carbonate. 
Of the analyses of the Empire brand below, 1 is quoted by Cum 
mings (American Cements, pp. 36), 2 by Lewis (Mineral Industry? 
VI, pp. 99), while 3 was furnished directly by the company. 
Analyses of cement made by Empire Cement Company, Warners, N. Y. 
Silica (Si0 2 ) 
Alumina ( A1 2 3 ) 
Iron oxide (Fe 2 3 ) 
Lime (CaO) 
Magnesia (MgO) 
Alkalies 
Sulphur trioxide (S0 3 ) 
20.80 
7.39 
2.61 
64.00 
22.04 
6.45 
3.41 
60.92 
3.53 
2.73 
:{ 
21.9. 
8. 2 
61. J' 
1.4 
1.1 
In 1893 the Glens Falls Portland Cement Company commenced thlj 
erection of a plant at Glens Falls, Warren County, and its cement w§ 
put on the market in 1894, as the "Iron Clad" brand. Six shaft kill 
of the Schoefer type were installed, the Glens Falls plant being then 
fore the second in this country to make use of this type of kill 
Though highly economical in fuel, the kiln is rather expensive in boi ij 
the quantity and quality of manual labor required to operate it pro] 
erly. A fire in August, 1899, destroyed the plant, which was rebui I 
to give a nominal capacity of 500 barrels a day, and the manufaetuH 
of cement was recommenced in August, 1900. 
