252 
CEMENT MATERIALS AND INDUSTRY. 
Analyses of Tally limestone, New York. 
I.BULL. 24; 
Silica (SiO,) 
Alumnia (A1 2 3 ) 
Iron oxide (Fe 2 3 ) .. 
Lime (CaO) 
Magnesia (MgO) 
Carbon dioxide (C0 2 ) 
1 
2 
3 
4 
5 
9.72 
6.30 
7.88 
5.7 
4.0 
4.20 
.48 
| 3.35 
4.01 
2.1 
26.0 
47.11 
50. 25 
48. 10 
49. 56 
33. 6 
.66 
. 22 
.53 
.67 
2.6 
n. d. 
11. d. 
n.d. 
39. 67 
n. d. 
15. ( 
23.4i 
30. ( 
1.: 
n.d 
1. Top bed. Portland Point, Tompkins County. J. H. McGuire, analyst. 
2. Middle bed. Portland Point, Tompkins County. I. H. McGuire, analyst. 
3. Bottom bed. Portland Point, Tompkins County. J. H. McGuire, analyst. 
4. Near Lansing, Tompkins County. H. Ries, analyst. Bull. New York State Mus., No. 44, p. 820. 
5. Willard, Seneca County. Trans. New York Agric. Soc. for 1850, p. 611. 
6. Hayt Corners, Seneca County. Ibid. 
Q UA TERNAR Y MARLS. 
DISTRIBUTION. 
Small deposits of marl occur at many points in eastern and northern 
New York, tilling old lake basins and now forming swampy tracts 
overlain by much impure peat. So far as known, none of the deposit i 
in this part of the State are of workable size. 
In western and central New York, however, large marl deposit! 
have been found at many points. They are, or have been, utilize* | 
in the manufacture of Portland cement at Montezuma, Cayuga County 
Jordan and Warners, Onondaga County; Caledonia, Genesee County J 
Wayland and Perkinsville, Steuben County, and Cassadaga Lake 
Chautauqua County. Other large deposits, as yet undeveloped, ar ij 
known a to occur northwest of Canastota, Oneida County; at Cortland I 
Cortland County; Clifton Springs, Ontario County; Clarendoi I 
Orleans County, and Bergen, Genesee County. 
COMPOSITION. 
The New York marls show, on analysis, the usual variations in con 
position. Most of those included in the table below are actually use 
at Portland-cement plants. 
"Bull. New York State Mus. No. 44, p. 767. 
