46 
AMERICAN NATURAL HISTORY. 
sylvania, with some account of that Formation. Also, on some new Fossil 
Molluscs, by Isaac Lea. 8vo. Philadelphia, 1852. 
Lea.—Fossil Foot-marks in the Red Sandstone of Pottsville, Pennsylvania, 
fey Isaac Lea, LL.D. 1 double Plate, and 16 pages letter-press, largest 
folio. Philadelphia, 1855. sewed. £1 4s. 
Leidy.—Memoir upon the Extinct Species of Fossil Ox, by Joseph Leidy, 
M.D. 5 Plates. 4to, pp. 20. Washington, 1852. 2s. 
Leidy.—The Ancient Fauna of Nebraska; or, a Description of Remains of 
Extinct Mammalia and Chelonia from the Mauvaises Terres of Nebraska, 
by Joseph Leidy, M.D. 25 Plates. 4to, pp. 124. Washington, 1853. 12s. 
Leidy.—A Memoir on the Extinct Sloth Tribe of North America, by Joseph 
Leidy, M.D., Professor of Anatomy in the University of Pennsylvania, &c. 
16 Lithographic Plates. 4to, pp. 70. Washington, 1855. sewed. 12s. 6d. 
Lieber.—Report on the Survey of South Carolina: being the first Annual 
Report to the General Assembly of South Carolina; embracing the Progress 
of the Survey during the year 1856, by Oscar M. Lieber, Mineralogical, 
Geological, and Agricultural Surveyor of South Carolina. 9 Plates and 
Maps. 8vo, pp. viii. and 136. Columbia, S. C., 1857. 
Loomis.'—The Elements of Geology; adapted to Schools and Colleges ; with 
numerous Illustrations, by J. R. Loomis. 12mo. Boston, 1852. cloth. 5s, 
Lord.—Geognosy; or, the Facts and Principles of Geology against Theories, 
by David N. Lord. 12mo, pp. 412. New York, 1855. cloth. 7s. 6d. 
Maclure.—Observations on the Geology of the United States, by William 
Maclure. 8vo. Philadelphia, 1817. 12s. 
Maclure.—Catalogue of Mineralogical and Geological Specimens at New 
Harmony, Ind., collected in various parts of Europe and America, by William 
Maclure. Arranged by D. D. Owens. 8vo. New Harmony, 1840. 
Marcou.—A Geological Map of the United States, and the British Provinces 
of North America; with an Explanatory Text, Geological Sections, and 
Plates of the Fossils which characterize the Formations, by Jules Marcou, 
United States’ Geologist, Member of the Geological Society of France, &c. 
8 vo. Boston, 1853. cloth. 18s. 
Marcou.—Geology of North America, by Jules Marcou. Containing: His¬ 
tory of the Progress and Discovery of Geology in America; Description 
of the Geology of North America; Two Geological Reports made for the 
U. S. Government, on Arkansas, Texas, New Mexico, and California; giving 
the result of fhe first Geological Exploration made in the Rocky Mountains, 
the Sierra Madre, and the Sierra de San Francisco; Report of the Gold 
Formation in the Sierra Nevada; a Geological Map of the United States 
and the British Provinces. 1 vol. 8 Plates of Fossils. 4to. in press. 
Mather.—Elements of Geology, by W. W. Mather. 8vo. New York. 3s. 
Mather.—Report of the Geological Survey of Ohio, by W. W. Mather and 
others. 8vo. Columbus, O., 1838. 
Moore.—American Mineralogy, by N. F. Moore. 12mo. New York, cloth. 4s. 
New Jersey.—Second Annual Report on the Geological Survey of the State 
of New Jersey, for the year 1855. With many Engravings and 2 Maps. 
8vo, pp. 250. Trenton, 1856. cloth. 14s. 
New York.—-Geology of the State of New York. Published by Authority. 
4 vols. 4to. Albany, 1842, 1843. Part I. Comprising the Survey of the 
First Geological District, by William M. Mather. With 46 coloured Plates, 
pp. xxxvii. and 653. Part II. Comprising the Survey of the Second Geo¬ 
logical District, by Ebenezer Emmons, M.D. With 17 Plates, pp. x. and 
437- Part III. Comprising the Survey of the Third Geological District, by 
Lardner Yanuxein. pp. 306. Part IY. Comprising the Survey of the 
Fourth Geological District, by James Hall. Maps, Plans, Illustrations, 
and 19 Plates. p,p. xxii. and 525. 
Owen.—Key to the Geology of the Globe : an Essay designed to show that 
