136 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 11)06-1907. 
Merrill, George P. — Continued. 
1737. University training of engineers in economic geology. — Econ. Geology, 
vol. 1, no. 4, pp. 387-391, 1906. 
1738. Catalogue of the type and figured specimens of fossils, minerals, rocks, 
and ores in the Department of Geology, United States National Museum. Part 
II. Fossil vertebrates; fossil plants; minerals, rocks, and ores. — U. S. Nat. 
Mus., Bull., no. 53, pt. 2, 370 pp., 1907. 
1739. On a newly found meteorite from Selma, Dallas County, Alabama. — 
U. S. Nat. Mus., Proa, vol. 32, pp. 59-61, 2 pis., 1907. 
1740. Notes on the composition and structure of the Hendersonville, North 
Carolina, meteorite. With chemical analyses by Wirt Tassin. — U. S. Nat. Mus., 
Proa, vol. 32, pp. 79-S2, 2 pis., 1 fig., 1907. 
Describes the physical characters, structure, and composition. 
1741. On the meteorite from Rich Mountain, Jackson County, North Caro- 
lina.— U. S. Nat. Mus., Proa, vol. 32, pp. 241-244, 1 pi., 1907. 
1742. On a peculiar form of metamorphism in siliceous sandstone. — U. S. 
Nat. Mus., Proa, vol. 32, pp. 547-550, 1 pi., June 15, 1907. 
1743. A peculiar form of metamorphism in siliceous sandstone. — Abstract: 
Science, new ser., vol. 25, p. 905, June 21, 1907. 
The building and ornamental stones of North Carolina. — See Watson and 
Laney, no. 2494. 
Merrill, George P., and Tassin, Wirt. 
1744. Contributions to the study of Canyon Diablo meteorites. — Smithsonian 
Misc. Coll., vol. 50 (Quart, Issue, vol. 4, pt. 2), pp. 203-215, 4 pis.. 2 figs., 1907. 
Merz, Alfred. 
1745. Beitriige zur Klimatologie und Hydrographie Mittelamerikas. Leip- 
zig, C. G. Naumann, 96 pp. 4 pis. [1907]. 
Includes a brief account of the general geology of the San Juan Valley in Nicaragua and 
Costa Rica. 
Middleton, George. 
1746. Notes on Georgia's geology. — Mineral Collector, vol. 13, pp. 101-104, 
115-118, 137-141, 1906. 
Miers^ H. A. 
1747. Obituary: Samuel Lewis Penfield.— Mineral Mag., vol. 14, pp. 264-268, 
1 pi. (port.), February, 1907. 
Miller, Arthur M. 
1748. Classification and mapping of the lower Ordovician of Kentucky. — 
Abstract : Ohio Naturalist, vol. 6, no. 3, pp. 447^48, January, 1906. 
Miller, Benjamin LeRoy. 
1749. Description of the Dover quadrangle [Delaware-Maryland-New Jer- 
sey].— IT. S. Geol. Survey, Geol. Atlas of U. S., folio no. 137, 10 pp., 1 fig., 2 
maps, 1906. 
Describes the physiographic features, the occurrence, character, and relations of 
Cretaceous, Tertiary, and Quaternary formations, the geologic history, and the economic 
geology. 
1750. The economic resources of Calvert County [Maryland]. — Maryland 
Geol. Survey, Calvert County, pp. 123-134, 1 pi., 1907. 
1751. The economic resources of St. Mary's County [Maryland]. — Maryland 
Geol. Survey, St. Mary's County, pp. 113-124, 1907. 
A brief summary of the geology of the Virginia coastal plain. — See Clark and 
Miller, no. 242. 
Description of the Patuxent quadrangle. — See Shattuck and others, no. 2193. 
