BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 135 
Merrick, A. W. 
1719. The clay slide at the Boone viaduct, Boone, Iowa. — Western Soc. Eng., 
Jour., vol. 11, no. 3, pp. 332-339, June, 1906. 
Includes notes on the local geology. 
Merrill, Frederick J. H. 
1720. The mercury deposits of Mexico. — Min. World, vol. 24, no. 7, p. 244, 
February 17, 1906. 
1721. Evidences of glaciation in southern Arizona and northern Sonora. — 
Science, new ser., vol. 24, pp. 116-118, July 27, 1906. 
Describes the occurrence and character of morainal material north and south from 
Nogales, Ariz. 
1722. The Copete district, central Sonora [Mexico]. — Eng. and Min. Jour., 
vol. 82, pp. 628-629, 2 figs., October 6, 1906. 
Describes the local geology and the occurrence of copper ores. 
1723. The mining camps of Sinaloa, Mexico. — Eng. and Min. Jour., vol. 82, pp. 
635-636, 3 figs., October 6, 1908. 
Contains notes on the general geology of the State. 
1724. Paleozoic strata in Sonora [Mexico]. — Eng. and Min. Jour., vol. 82, 
p. 897, November 10, 1906. 
A brief note calling attention to the occurrence of Paleozoic strata in the State of 
Sonora, Mexico. 
1725. The mines of Planchas de Plata. The interesting geology of an his- 
toric mining district of Sonora [Mexico]. — Eng. and Min. Jour., vol. 82, pp. 
1111-1112, 1 fig., December 15, 1906. 
Describes the geology and the ore bodies. 
1726. Shear zones in Sonora [Mexico]. — Eng. and Min. Jour., vol. 83, p. 583, 
March 23, 1907. 
1727. Heretical vein types in Sonora [Mexico]. — Eng. and Min. Jour., vol. 83, 
p. 657, April 6, 1907. 
1728. The mineralization of Mexico. — Eng. and Min. Jour., vol. 83, p. 667, 
April 6, 1907. 
General observations on the occurrence of ore deposits in Mexico. 
1729. Santa Cruz, a new copper camp -in Sonora [Mexico], — Eng. and Min. 
Jour., vol. 83, p. 1043, 1 fig., June 1, 1907. 
1730. Copper in the Sonora quartz veins. — Eng. and Min. Jour., vol. 84, p. 
498, September 14, 1907. 
Discusses the occurrence of the ores. 
1731. Erosion and oxidation in Sonora [Mexico]. — Min. and Sci. Press, vol. 
95, p. 268, August 31, 1907. 
Discusses the character and occurrence of ore deposits in Sonora. 
Merrill, George P. 
1732. A treatise on rocks, rock-weathering, and soils. New edition. Now 
York, The Macmillan Company, 1906. 400 pp., 31 pis., 42 figs. 
1733. A new meteorite from Scott County, Kansas. — Science, now ser., vol. 
23, pp. 391-392, March 9, 1900. 
1734. The development of the glacial hypothesis in America. — Pop. Sci. 
Monthly, vol. 68, no. 4, pp. 300-322, April, 1900. 
1735. On a new stony meteorite from Modoc, Scott County, Kansas. — Am. 
Jour. Sci., 4th ser., vol. 21, pp. 356-360, May, 1906. 
Describes the occurrence, characters, and composition. 
1736. Contributions to the history of American geology. — U. S. Nat. Mus. f 
Ann. Kent., L904, pp. 189-733, 37 pis., 141 figs., 1906. 
Ad historical account of the devolopment of geological science in America. 
