*.^4 niYSlOGRAPHY AND GEOLOGY OF THE COASTAL PLAIN PROVINCE. 



The topography and geology of the Northern Neck embracing the counties of Lan- 

 caster, Northumberland, Richmond, Westmoreland, and King George, and the eastern part 

 of Stafford County are discussed and many outcrops of Miocene and Eocene strata 

 described. A few new species of fossils from the Miocene and Eocene are described and 

 figured. 



Contributions to the Geology of the Tertiary Formations of 



Virginia. Second series. 



Proc. Amer. PhiL Soc, vol. i, pp. 88-90, 1839. 



Abstr. Amer. Jour. Sci., vol. xxxviii, pp. 183-184, 1840. 



The geology of the peninsula embraced between the Potomac and Rappahannock 

 rivers from Chesapeake Bay to the head of tidewater is described. The stratigraphy, 

 lithology, and paleontology of the Eocene and Miocene strata are briefly described. 



1840 



Conrad^ T. A. Fossils of the Medial Tertiary of the United States. 



No. 2. pp. 33-56, pis. 18-29, Pliila., 1840. Republished by W. H. Dall. 

 Phila., 1893. 



Miocene fossils from City Point, Smithfleld, Yorktown, Suffolk, Urbanna. and Lan- 

 caster counties are described and figured. 



Lea, ni':xRY C. Description of some new Fossil shells from the Tertiary 

 of Petersburg, Va. 



Trans. Amer. Phil. Soc, vol. ix, 1840. (n. s.), pp. 229-274, pis. 34-42. 



One hundred and five new species are described and figured, making in all 173 species 

 from the Miocene strata at Petersburg. Of these only nine can be identified with existing 

 forms. 



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

 the State of Virginia for the year 1839. 



161 pp., 2 pis., Richmond, 1840. Reprint of Reports of the Geology of the 

 Virginias, pp. 24.5-410. 



The region lying south of the James River is discussed in great detail and the 

 physiography, stratigraphy, and lithology of the area are very accurately described. The 

 structure of the Coastal Plain is discussed more fully than in any of the earlier reports. 

 The escarpment lying to the west of the Dismal Swamp is said to represent an old sea 

 cliff which separates the low-lying region of the Norfolk area from the higher-lying flat 

 plain to the west. 



1841 



HoDGE, JA]\rES T. Observations on the Secondary and Tertiary Forma- 

 tions of the Southern Atlantic States with an appendix describing new 



shells by T. A. Conrad. 



Abst. Amer. Jour. Sci., vol. xli, pp. 182-183, 332-448, pi. ii, 1841. 



Trans. Assoc. Amer. Geol. and Nat., pp. 34, 35, 94-III, pi. v, Bostou, 1843. 



The Eocene marl exposures on the Rappahannock and Pamunkey rivers are described, 

 and the use of the marl as a fertilizer is highly recommended. 



