GEOLOGICAL LITERATURE OF THE VIEGIISriA COASTAL PLAIN. 37 



White, Charles A. Correlation Papers — Cretaceous. 

 U. S. Geol. Survey, Bull. No. 82, 273 pp., 3 pis., Washington, 1891. 

 This bulletin contains a brief r§sum6 of the previously published articles on the 

 Potomac deposits of Virginia. 



WooLMAN, Lewis. Note on the Extension Southward of Diatomaceous 

 Clays and the Occurrence there of Flowing Wells. 



Geol. Surv. of New Jersey, Report for 1890, pp. 275-276, 1891. 



The author mentions many localities in Virginia where diatomaceous earth outcrops 

 and other places where it has been reached in well borings. 



1892 



Clark, W. B. Correlation Papers — Eocene. 



U. S. Geol. Survey, Bull. No. 83, 159 pp., 2 pis., 1892; Abstrs. Amer. Geol., 

 vol. xii, p. 379, 1893; Amer. Nat., vol. xxvi, pp. 330-332, 1892. 



The paper embodies an historical review of the literature and a general summary 

 of all existing knowledge concerning the Eocene strata of the United States. The Vir- 

 ginia deposits are briefly described. 



Dall, W. H. and Harris, G. D. Correlation Papers. Neocene. 

 U. S. Geol. Survey, Bull. No. 84, 349 pp., 3 pis., 43 figs., 1892. 

 Contains a general summary of all existing information concerning the Miocene and 

 Pliocene deposits of Virginia based principally upon the work of Rogers and Conrad. 



1893 



Clark, AV. B. The Eocene of the United States. 

 Jolins Hopkins Univ. Circ, a'oI. xii, pp. 50, 51, 1893. 



Contains a Drief synopsis of the Eocene Correlation bulletin No. 83 of the United 

 States Geological Survey. 



1894 



Darton, jST. H. Fredericksburg Folio, Virginia-Maryland. 



U. S. Geol. Survey, Geol. Atlas of U. S., Folio No. 13, 1894. 



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

 which includes all of King George County and considerable portions of Stafford, Spottsyl- 

 vania, Caroline. Esses, and Westmoreland counties, are discussed in the text and rep- 

 resented on the accompanying maps drawn to the scale of 1 :125,000. 



On Fossils in the Lafayette Formation in Virginia. 



Amer. Geol., vol. ix, pp. 181-183, 1892. 



The Lafayette is reported to extend down the peninsula from the Piedmont Plateau 

 almost to Chesapeake Bay. Water-worn shells are reported from the Lafayette deposits 

 near Heathsville, Northumberland County, but it is possible, if not probable, that they 

 were derived from the Miocene. The fossils were too poorly preserved to be definitely 

 determined. 



