BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 67 
Eastman, Charles R. — Continued. 
760. Devonic fishes of the New York formations— New York State Mus., 
Mem. 10. 235 pp., 15 pis., 35 figs., 1907. 
Eberle, Frank. 
761. The Willamette meteorite. — Min. World, vol. 23, no. 10, p. 271), Septem- 
ber 9, 1905. 
Eckel, Edwin C. 
762. Cement materials of Mississippi. — U. S. Geol. Survey, Bull. no. 283, 
pp. 71-84, 1906. 
Describes the occurrence and character of limestones suitable for cement manufacture. 
763. Contributions to economic geology. 1905: Investigation of iron ores and 
nonmetalliferous minerals.— U. S. Geol. Survey. Bull. no. 285, pp. 20-24, 1906. 
Outlines the work in progress of the U. S. Geological Survey upon iron ores, fuels, 
structural materials, and miscellaneous nonmetals. 
764. The Clinton or red ores of northern Alabama. — U. S. Geol. Survey, 
Bull. no. 285, pp. 172-179, 1906. 
Discusses the origin of the Clinton ores and describes the geology, occurrence, and 
chemical characters of the ore bodies, and the mining developments in northern Alabama. 
765. The Oriskany and Clinton iron ores of Virginia. — U. S. Geol. Survey, 
Bull. no. 285, pp. 183-189, 1 fig., 1906. 
Describes the general geology of the iron district, and the occurrence, character, and 
origin of the ores. 
766. Cement resources of the Cumberland (Jap district, Tennessee-Virginia. — ■ 
IT. S. Geol. Survey, Bull. no. 2S5, pp. 374-370, 1906. 
Describes the geology of the district, and the character and occurrence of limestones 
and shales available for cement manufacture. 
767. Clays of Garland County, Arkansas.— U. S. Geol. Survey, Bull. no. 285, 
pp. 407-410, 1906. 
Describes the occurrence and character of the deposits, and the composition of the 
clays. 
768. Investigations of iron ores, structural materials, etc. — T\ S. Geol. Sur- 
vey, Bull. no. 315, pp. 20-25, 1907. 
Summarizes the investigations of iron ores, structural materials, etc.. of the l'. S. 
Geological Survey during the year 1906. 
769. The mineral-paint ores of Lehigh Gap, Pennsylvania— TJ. S. Geol. Sur- 
vey, Bull. no. 315, pp. 435-437, 1907. 
770. Mineral Paints: Geology and technology. — U. S. Geol. Survey, Mineral 
Resources for 1906, pp. 1120-1122, 1907. 
(Jives a geologic section in the Lehigh Gap district, Pennsylvania. 
Slate deposits of the United States.— See Dale and Eckel, no. 625. 
The production in the United Stales in 1905 of gypsum and gypsum prod 
nets.— See no. 2418. 
Contributions to economic geology, 1905.— See U. S. Geological Survey. 
Contributions to economic geology. 1906. See U. S. Geological Survey. 
Advances in cement technology, 1906.— See no. 2419. 
The production in the United States in 1906 of iron ores, pig iron, and steel: 
and of lime and sand-lime brick. — See no. 2419. 
Eddy. J. A. 
771. A remarkable sodu spring I New Mexico]. Eng. and Min. Jour., vol. 
81, p. 793. April 28, 1906. 
Describes briefly the character of the water and Hi" deposil it bas formed. 
