GEOLOGICAL LITERATURE OF THE VIRGINIA COASTAL PLAIN. 25 



EoGERS, Wm. B. Eeport of the Progress of the Geological Survey of 

 the State of Virginia for the year 1840. 



132 pp., Richmond, 1841. Reprint of Reports on the Geology of tlie Virginias, 

 pp. 411-535, New York, 1884. 



The report contains detailed descriptions of the Miocene, Eocene, and Potomac (called 

 Upper Secondary) strata of the Northern Neck. The stratigrapliic relations and litho- 

 logic characters are very accurately described, while lists of the most abundant fossils 

 are given. The Tertiary strata exposed in the valley of Shockoe Creek. Richmond, are 

 also described. 



184:2 



Conrad, T. A. Observations on a Portion of the Atlantic Tertiary 

 Eegion, with a Description of New Species of Organic Eemains. 



Proc. Nat. Inst. Promotion Sci., vol. i, pp. 171-194, pis. i-ii. Washington, 1842. 



The geographic limits and stratigrapliic relations of the Eocene and Miocene in 

 Virginia are given. The presence of Ostrca seUwfoimis is employed to separate the 

 Eocene from the Miocene, 



Lyell^ Charles. On the Tertiary Formations and their connection 



with the Chalk in Virginia and other Parts of the United States. 



Proc. Geo], Soc, London, vol. iii, pp. 735-742, 1842. 



Brief mention is made of the Eocene and Miocene strata of Virginia and their con- 

 tained fossils. 



TuOMEY, M. Discovery of a chambered Univalve Fossil in the Eocene 



Tertiary of James Eiver, Virginia. 



Amer. Jour. Sci., vol. xliii, 1842, p. 187. 



This article contains some conclusions of the author regarding the stratigraphy of 

 the Eocene, based on a section exposed in a 'shaft sunk at Evergreen on the James River. 



1843 



Conrad, T. A. Description of a Kew Genus and twenty-nine new 

 Miocene and one Eocene Fossil Shells of the United States. 



Proc. Acad. Nat. Sci., Phila., vol. i, pp. 305-311, 1843. 



Six new species of Miocene fossils from Petersburg, Smithfield and James River are 

 described. 



Descriptions of Nineteen Species of Tertiary Fossils of Vir- 

 ginia and North Carolina. 



Proc. Acad. Nat. Sci., Phila., vol. i, pp. 323-329, 1843. 



Several new species of fossils from Petersburg, Coggins Point, and the Pamunkey 

 River in Kent County, are described. 



EoGERS, W. B. On Limits of Infusorial Stratum in Virginia. 

 Amer. Jour. Sci., vol. xlv, pp. 313-314, 1843. 



