126 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1901 . 
Lindgren, Waldemar — Continued. 
1597. The relation of ore-deposition to physical conditions. — Congr. geol. 
intern.. C. R. 10° sess., Mexico, 1900. pp. 701-724. 1907; Econ. Geology, vol. 2, 
no. 2, pp. 105-127, 1907. 
Discusses the character of ore deposits and the conditions by which these were pro- 
duced. 
1598. [Review of] The copper deposits of the Robinson mining district, 
Nevada, by A. C. Lawson (California, Univ., Dept. Geol., Bull., vol. 4, no. 14). — 
Econ. Geology, vol. 2. no. 2, pp. 195-304, 1907. 
1599. Some gold and tungsten deposits of Boulder County*. Colorado. — Econ. 
Geology, vol. 2, no. 5, pp. 453-463, 1907. 
Describes the local geology and the occurrence and character of the ores. 
1600. Present tendencies in the study of ore deposits. — Econ. Geology, vol. 2, 
no. 8, pp. 743-762, 1907. 
1601. The development of the metal mining industries in the western states. — 
Am. Min. Cong., Rept. of Proc, 9th Ann. Sess., pp. 156-165, 1907. 
1602. Methods of igneous intrusion. — Abstract : Science, new ser., vol. 25, 
p. 623. April 19, 1907. 
Production of gold and silver. 1005. in Colorado, New Mexico, South Dakota, 
southern Appalachian States. Texas, and Wyoming. — See no. 2418. 
Lindgren, Waldemar. and others. 
Production of gold and silver in the United States, 1905. — See no. 2418. 
The production in the United States in 1906 of gold and silver. — See no. 2419. 
Lindgren, Waldemar. and Graton, Louis Caryl. 
1603. A reconnaissance of the mineral deposits of New Mexico. — U. S. Geol. 
Survey, Bull. no. 285, pp. 74-86, 1 fig., 1906. 
Describes the general physiographic features, the occurrence and character of sedi- 
mentary and igneous rocks, the geologic structure, and the geographic and geologic dis- 
tribution of ore deposits and their age. 
Lindgren, Waldemar, and Ransome, Frederick Leslie. 
1604. Geology and gold deposits of the Cripple Creek district. Colorado. — 
U. S. Geol. Survey, Prof. Paper no. 54. 516 pp., 29 pis., 64 figs.. 1906. 
Describes the general features of the area, the geological structures, the occurrence and 
character of the igneous and metamorphic rocks, the minerals, and the character, occur- 
rence, relations, and genesis of the ore deposits, and gives detailed descriptions of the 
mines. 
Lines, Edwin F. 
1605. Clays and shales of Clarion quadrangle, Clarion County, Pa. — U. S. 
Geol. Survey, Bull. no. 315, pp. 335-343, 1907. 
1606. Coals of the Clarion quadrangle. Clarion County, Pa. — U. S. Geol. 
Survey. Bull. 316. pp. 13-19, 1 pi., 1907. 
Logan, William \. 
1607. Circular on the underground waters of Mississippi. — Mississippi Agric. 
Exp. Station. 1905. 16 pp. 
1608. Clays of Mississippi. Part 1. Brick clays and clay industry of 
northern Mississippi. — Mississippi State Geol. Survey, Bull. no. 2, 255 pp., 42 
pis., 14 figs., 1907. 
Logan, W. X.. and Hand, W. F. 
1609. A preliminary report on some of the clays of Mississippi.— Mississippi, 
Geol. Survey, Bull. no. 3 (Bull. Mississippi Agric. and Mech. Coll., vol. 2, no. 3, 
July, 1905), 88 pp., 23 figs. 
