144 
CEMENT MATERIALS AND INDUSTRY. [bull. 2< 
Analyses of raw materials for cement from Mitchell, Ind. 
Silica (SiO,) 
Alumina (A1.,0 ; .) 
Iron oxide (Fe 2 3 )... 
Lime (CaO) 
Magnesia ( MgO) 
Alkalies (K,0, Na,()). 
Carbon dioxide (C0 2 ) 
Water 
0.74 
. L3 
52. 49 
1.87 
n. d. 
43.68 
59. 
« 19. U 
7. 
2. 
4. 
4. 
a With Ti0 2 , 1.05 per cent. 
1. Limestone. F. W. Clarke, analyst. Specimen collected by E. C. Eckel. 
2. Shale. Twenty-sixth Ann. Rept. Indiana Dept. Geology, p. 276. 
BIBLIOGRAPHY OF CEMENT RESOURCES OF INDIANA. 
The following papers relate to the raw materials or the manufactui 
of Portland cement in Indiana: 
Blatchley, W. S. Preliminary report on the clays and clay industries of the coi 
bearing counties of Indiana. Twentieth Ann. Rept. Indiana Dept. Geoloj 
pp. 24-187. 1896. 
Blatchley, W. S. Clays and clay industries of northwestern Indiana. Twent; 
second Ann. Rept. Indiana Dept. Geology, pp. 105-153. 1898. 
Blatchley, W. S. Portland cement (in Indiana). Twenty-fifth Ann. Rept. India 
Dept. Geology, pp. 1-30. 1901. 
Blatchley, W. S. Oolite and oolitic stone for Portland cement manufacture. Twent; 
fifth Ann. Rept, Indiana Dept. Geology, pp. 322-330. 1901. 
Blatchley, W. S., and Ashley, G. H. The lakes of northern Indiana and their as: 
dated marl deposits. Twenty-fifth Ann. Rept. Indiana Dept. Geology, pp. 3: 
321. 1901. 
Hopkins, T. C., and Siebenthal, C. E. The Bedford white limestone of India 
Twenty-first Ann. Rept. Indiana Dept. Geology, pp. 291-427. 1897. 
Lathbury, B. B., and Spackman, H. S. The Wabash Portland Cement Compan; 
St mh, Ind. The Rotary Kiln, pp. 128-133. 1902. 
Siebenthal, G E. The Bedford oolitic limestone (Indiana). Nineteenth An: 
Rept. U. S. Geol. Survey, pt. 6, pp. 292-296. 
PORTLAND-CEMENT RESOURCES OF INDIAN TERRITOR 
By J. A. Tapf. 
Limestones of several different ages occur in Indian Territory, an( 
it is probable that most of them would be suitable for cement mate; 
rials. No complete analyses, however, are available. 
