42 PHYSIOGRAPHY AND GEOLOGY OF THE COASTAL PLAIN PROVINCE. 



Gannett, Henry. Physiographic Tj-pes. 



U. S. Geol. Survey Topog. Atlas of U. S., Folio No. 2, 1900. 



The Norfolk topographic sheet is included in the folio to illustrate a coast swamp. 



Vaughan, T. AVayland. The Eocene and Lower Oligocene Coral 

 Faunas of the United States. 



U. S. Geol. Survey, Monogr. xxxix. 263 pp., 24 pis., 1900. 



Several species of corals from the Eocene deposits of Virginia are described and 

 figured. 



1901 



Clark, W. B. and others. Maryland Geological Survey. Eocene. 

 331 pp., 64 pis., Baltimore, 1901. 



The Eocene deposits on the Potomac River in Virginia are discussed and many fossils 

 from that region are described and figured. 



Darton, N. H. and Keith, Arthur. Washington Folio, Dist. of 

 Columbia, Maryland, Virginia. 



U. S. Geol. Survey, Geol. Atlas of U. S., Folio No. 70, 1901. 



The topography, geology, and economic resources of the Washington quadrangle, 

 which includes a considerable area in Virginia are discussed in the text of the folio and 

 represented on the accompanying maps drawn to the scale of 1 :62,500. 



1902 



Darton, N. H. Norfolk Folio, Virginia-North Carolina. 



U. S. Geol. Survey. Geol. Atlas of U. S., Folio No. 80, 1902. 



The topography, geological formations, and economic resources of the Norfolk region 

 are discussed and represented on accompanying maps drawn to the scale of 1 :125,00(). 

 A good description is given of the Dismal Swamp. 



1903 



Eies, Heinrich. The Clays of the United States east of the Mississippi 

 River. 



U. S. Geol. Survey, Professional Paper No. 11, 298 pp., 9 pis., 11 figs., 1903. 



Gives a very brief account of the geologic and geographic distribution of the clay de- 

 posits in the Coastal Plain of Virginia. 



1904 



Clark, W. B. and others. Maryland Geological Survey. Miocene. 



cxxxvii4-543 pp., 135 pis.. Baltimore. 1004. 



Many references are made to the Miocene deposits of Virginia while the Virginia 

 fossils are frequently mentioned. Most of the forms described from the Maryland 

 deposits also occur in Virginia. 



