8fi CEMENT MATERIALS AND INDUSTRY. [bull. 2 
The following analyses are of the "Red Diamond" brand of Portlanc 
cement, manufactured at this plant: 
Analyses of Portland cement from Demopolis, Ala. 
Silica (Si0 2 ) 
Alumina (A1 2 3 ) 
Iron oxide (Fe 2 3 ) . . 
Lime(CaO) 
Magnesia (MgO) 
Sulphur trioxide (S0 3 
Total sulphur (S) 
Water, etc 
1 
2 
3 
4 
20. 54 
20. 25 
19.99 
19.91 
8.55 
3.84 
1 13. 44 
13.74 
13.63 
63. 85 
63.60 
61. 36 
63.82 
.66 
1.03 
.61 
.83 
n.d. 
.41 
n.d. 
1.16 
n. d. 
.99 
n. d. 
n.d. 
1.34 
n. d. 
n. d. 
n. d. 
la 
12. 1< 
62. 
1. Clinker. F. W. Clarke, analyst. 
2. Cement. A. W. Dow, analyst. 
3. Cement. Sen. Doc. No. 19, 58th Congress, 1st session, p. 23. 
4. Cement. R. S. Hodges, analyst. 
5. Cement. Cement Directory, *2d edition, p. 254. 
BIBLIOGRAPHY OF CEMENT RESOURCES OF ALABAMA. 
Tradesman, i 
Bull. U. S. Geol. Survey No. 225, 
Smith, E. A. Alabama's resources for the manufacture of Portland cement. Proc. 
Alabama Industrial and Scientific Society, vol. 5, pp. 44-51. 1895 
Dec. 15, 1895. 
Smith, E. A. Cement resources of Alabama 
pp. 424-447. 1904. 
Smith, E. A., and Eckel, E. C. The cement resources of Alabama. Senate Docu- 
ment No. 19, 53d Congress, 1st session, 23 pp. 1903. 
Smith, E. A., and Eckel, E. C. Cement resources and manufacture in Alabama. 
Bull. Alabama Geol. Survey No. 8, 93 pp. 1904. 
Smith, E. A., and Rico, H. Preliminary report on the clays of Alabama. Bull 
Alabama Geol. Survey No. 6, 220 pp. 1900. 
• 
PORTLAND-CEMENT RESOURCES OF ARIZONA. 
PORTLAND CEMENT MATERIALS. 
Little detailed information is obtainable concerning either the areal 
distribution or the character of Arizona limestones. The few analyses 
of cement materials available, such as those given in the tables below, 
have been made in the course of examination of isolated districts. 
The following analyses of limestones from the Bisbee district of 
southeastern Arizona are taken from Prof. Paper U. S. Geol. Survey 
No. 21, p. 52. The analyses were made by W. F. Hillebrand 
specimens collected by F. L. Ransome. 
