1B8 
GEOLOGY 
1836 — F<?tltllCl’Sl01lhftllgh 5 G. W. — Report of a Geological Reconnaissance made in 1835, from the seat of Goveni- 
menl, by (he waxj of Green Ray and (he Wisconsin Territory, to the Coleau des Prai- 
ries, an elevated ridge divUling the Missouri from (he S(. Peter's River; 8®. 
Washington. 
1836 — Hildreth^ ttiddcll^ Lupliam^ and LockB — Report on (he Geological Survey of Ohio; 8®. 
Columbus. 
1 837/38 -IMuthcr^ William W. — Geological Survey of the Stale of Ohio. First Annual Report , 1837. Second Annual 
Report^ 1838; 8®. Columbus. 
1838/41 -HoUglltOll 5 Douglass — Geological Survey of (he Stale of Michigan: First Axinual Report, 1838; Second 
Annual Report, 1839; Third Annual Report, 1840; Fourth Annual Report , 1841; 
8®. Detroit. 
183 g — OwGIl^ David Dale — Report of a Geological Reconnaissance of (he Stale of Indiana; made in the year 1837 ; 
8®. Indianopolis. 
1838 — Mather , William W. ~ Report of the Geological Reconnaissance of Kentucky, made in 1838. 8®. 
1838 — Troost , Gerard — Description d'un nouveau genre de Fossiles (Extract from : Meirioircs de la Societe Geo- 
logique de France, li^fe serie , tome III.); 4°. Paris. 
1842/46- Ow '6n 5 David Dale — On (he Geology of the Western Stales of North America (Extract from: Proceedings 
of the Geol. Soc. of London , vol. IV, part I, N®92; and in the Postponed 
Papers of the Quart. Journ. of the Geol. Soc. of London , vol. II.); 8®. London. 
1843 — Hall ^ James — Notes Explanatory of a Section from Cleveland, Ohio, to the Mississippi river, in a soulh- 
ivesl direction; with remarks upon the identity of the western formations with (hose 
of New York (Extract from : Ueports of the Association of American Geologists.); 
8°. Boston. 
jg 4 .^ — OWGll^ David Dale — Report of a Geological Exploration of part of Iowa, Wisconsin, and Illinois, made 
under instructions from the Secretary of the Treasury of the Vniled Stales, in the 
autumn of the year 1839; 8®. Washington. 
18^47 — Yandell , L. p., and Sliumard , b. f. — Contributions to fhe Geology of Kentucky ; 8". Louisville. 
1848 — Christy ^ David — Letters on Geology; being a series of communications originally adressed to Dr. John 
Locke , of Cincinnati , giving an outline of the geology of the West and South- 
West; together with an Essay on the Erratic Rocks of North America; 8®. Ox- 
ford, Ohio. 
lg'i.g PrOUt^ 11. A. — The Geology and Mineral Resources of the Slate of Missouri (Extract from the Western 
Journal and Civilian, vol. I.); 8®. St. Louis. 
1349 OWGIl^ David Dale — Report of a Geological Reconnaissance of the Chippewa Land, District of 
and, incidentally, of a portion of the Kickapoo Cowilry, and of a part of Iowa 
and of the Minnesota Territory, 8®. Washington. 
1349 — . Charles T. — Report on the Geological and Mineralogical Survey of the Mineral Lands of the 
United States in the Stale of Michigan, made under the authority of Congress, 
in 1847 and 48 ; 8®. Washington. 
1849 — Burl , w. A., and Hubbard, B. — Reports on the Linear Surveys, with reference to mines and minerals 
in the Northern peninsula of Michigan, in the years 1845 and 1846; 
8®. Washington. 
