NOETH AMERICAN GEOLOGY. 



611 



Maryland (including District of Colnra- 

 bia) — Coutinued. 

 1818. On parts of Virginia, Tennessee, 

 Alabama, Mississippi, etc., Cor- 

 nelius. 

 Geology of the United States, Ma- 

 clure. 



1820. Geological essays, Hayden, H. H. 



1821. Amber on Magothy River, Troost. 

 Structure of valley of the Missis- 

 sippi, Nuttall. 



1824. Essay on Tertiary of America, 

 Finch. 



1826. Shell marl region, coal formation 



and contiguous region. Pierce. 



1827. Borings for water, Disbrow. 



1829. Observations on ferruginous sand 



and upper marine formations, 

 Morton. 



1830. Geology of part of peninsula of 



Maryland, Conrad. 

 Ferruginous sand formation of 

 the United States, Morton, S. G. 



1831. Bedford and Berkeley Springs re- 



gions, Hayden, H. H. 



1832. Fossil shells of the Tertiary, Con- 



rad. 

 Analogy between marl of Con- 

 necticut and chalk of Europe, 

 Morton, S. G. 



1833. New fossil shells, Conrad. 

 Description of Bare Hills near 



Baltimore, Hayden, H. H. 



1834. Tertiary and Recent of Southern 



States, Conrad. 

 Strontianite-bearinglimestoneon 



Lake Erie, Bigsby. 

 Report of geologist, Duoatel. 

 Country between Baltimore and 



the Ohio, Aikin. 



1835. Tertiary of the Atlantic Coast, 



Conrad. 



Observations in Atlantic Tertiary 

 region, Conrad. 



Report on elevated country be- 

 tween Missouri and Red rivers, 

 Featherstonhaugh. 



Review of sections in Virginia 

 and Maryland, Taylor, R. C. 



1836. Reconnaissance from Washington 



through Wisconsin to Coteau 

 de Prairie, Featherstonhaugh. 



1837. Frostburg coal, Tyson. 

 Catalogue of minerals, Tyson. 



1841. 



1843. 



Maryland (including District of Colum- 

 bia) — Continued. 



1837. Physical geography of Maryland, 



Duoatel. 



1838. Fossils of medial Tertiary, Con- 



rad. 

 Report of State geologist, Duoa- 

 tel. 



1839. Report of geologist, Ducatel. 

 Notes on American geology, Con- 

 rad. 



1840. On the Silurian system, Conrad. 

 Report of geologist, Ducatel. 

 Report on paleontology of New 



York, Conrad. 



Oyster shell deposits, Vanuxem. 

 1842. Portion of the Atlantic Tertiary 

 region, Conrad. 



Origin of Appalachian coal, Rog- 

 ers, H. D. 



Structure of Appalachians ex- 

 emplifying laws of mountain 

 chains, Rogers and Rogers. 



Geology of western district of 

 New York, Hall, J. 



1844. American geology and condition 



of research in United States, 

 Rogers, H. D. 



1845. Miocene Tertiary of Virginia, 



Maryland, and the Carolinas, 



Lyeil. 

 Tertiary of Warren County, Miss., 



Conrad. 

 Statistics of coal. Taylor, R. C. 

 Eocene of Vicksburg, Conrad. 



1849. New localities for Infusoria in 



Maryland, Bailey, J. W. 



1850. Eocene of Vicksburg, Miss., Con- 



rad. 



1851. Gold formations of Maryland, 



Virginia, and North Carolina, 

 Johnson, W. R. 



Second report of chemist, Hig- 

 gins. 



Observations on magnetism, 

 Locke. 



Post-Pliocene of Southern and 

 Northern States, Desor. 



Third report of chemist, Higgius. 



Geologic map of the United 

 States, Marcon, J. 



Fourth report of chemist, Hig- 

 gius. 



Gold-bearing slates of Montgom- 

 ery County, Emmons, E. 



1846. 



1848. 



1852. 



1853. 



1854. 



