CO THE PHYSICAI, FEATURES OE PKI^'CE GEORGe's COUNTY 



Maryland State Weather Service. The Climatology and 

 Physical Features of Maryland. 



1st Bien. Rep. Maryland State Weather Service for years 1892-1893. 

 Baltimore, 1894. 



A general discussion of the geology, topography, soils and climate of the 

 State. 



^N'ewell^ r. H. Results of Stream Measurement. 

 14th An. Rep. U. S. G. S., 1892-1893, part ii, pp. 89-155. 

 Gives data concerning the Potomac River near Washington. 



Ward^ L. F. Fossil Cycadean Trunks of Xortli America, with a 

 Revision of the Genus Cyoadeoidea Buckland. 



Proc. Biol. Soc, Washington, vol. ix, pp. 75-88. 



The species of cycads found in the Potomac deposits of Maryland are 

 included in the list of forms given. 



Ward, L. F. Recent Discoveries of Cycadean Trunks in the 

 Potomac Formation of Maryland. 



Bull. Torry Bot. Club, vol. xxi, 1894, pp. 291-299. 



A short account is given of the cycad remains found in the Potomac 

 deposits of Maryland and the manner in which a collection of them has been 

 brought together. The region about Muirkirk has furnished more specimens 

 than any other locality in the Atlantic Coastal Plain. 



1895. 



Anonymous. Vert. Fauna of Potomac Formation in Maryland. 

 Science, N. S., vol. i, 1895, pp. 362. 



Notice of a collection of reptilian remains from the vicinity of Muirkirk 

 made by A. Bibbins. 



BiBBiNs, Arthur. Notes on the Paleontology of the Potomac 

 Formations. 



Johns Hopkins Univ. Circ, vol. xv, 1895, pp. 17-20. 



The author describes the occurrence of cycads and other plant remains in 

 the Potomac deposits of Maryland. The Contee and Muirkirk localities are 

 described in detail. 



Clark, W. B. Cretaceous Deposits of the Xorthern Half of the 

 Atlantic Coastal Plain. 



Bull. Geol. Soc. America, vol. vi, 1895, pp. 479-482. 



The Matawan and Navesink formations are said to occur in Prince George's 

 county. 



