MAHYLAND GKOLOGlCAl- SlltVKY 41 



^Mlkciiisun, ii. 1. Slcuii(I;i!-v ami 'I'cit iiiiy itjcks ami .-ii|HTli(iiil de- 

 posits of North America. 



Proc. Geol. Soc, London, vol. iv, LS4.'!, jjj). 127-1;;:!. 



The autlior reviews llio results of Lyell's iiivesllKUllons iiiM.n tin- T. ril.nv -ir.-ii.-i of 

 America, nddlii;; liis own liiterpretatlou of some points. 



NiCKLES, Joiix M., and Bassler, T\\y S. A Synopsis <>\' Anx.Ticaii 

 Fossil Bryozoa. 



Bull. 173, U. S. Geol. Survey, I'JOU, p. 72. 



Upper MMrlboro is included in tlie list of Eocene localities. 



Pierce, J. Practical remarks ou the shell-marl region of the eastern 

 parts of Virginia and Maryland, and upon the bituminous coal forma- 

 tion in Virginia ami the contiguous region. 



Amer. Jour. Sci., vol. ii, 1S2G, pp. 54-59. 



Reference is made to the localities at Upper Marll)oro, and I'otomac Creek. 



Eogers, W. B. On the discovery of greensand in the calcareous de- 

 posits of eastern Virginia, and on the probable existence of this sub- 

 stance in extensive beds near the western limits of our ordinary marl. 



Farmer's Register, vol. ii, 1834. Reprinted in the Geology of the Virginias, 

 18S4, pp. 3-9. 



The author refers in a general way to the greensand deposits of eastern Virginia, 

 which he compares with similar beds in New Jersey. 



Further observations on tiie greensand and calcareous marl of 



A'irginia. 



Farmer's Register, INIay, 1S35. Reprinted in Geology of the Virginias, 

 1884, pp. 11-20. 



In this publication the author makes the hrst announcement of the occurrence of the 

 Eocene in Virginia. 



Eeport of the geological reconnoissance of the State of Vir- 

 ginia, made under the appointment of the Board of Public Works, 1835. 

 , Eichmond, 1836, 4°, 52 pp. and plate. 



Re}3rinted, Phila., 1836, Svo, 143 pp. and plate, and in Geology of the Vir- 

 ginias, 1884, pp. 21-122. 



This report contains a general statement regarding the "Eocene Marl District "of 

 eastern Virginia, with a description of the lithologic character of the strata in the 

 different river valleys. 



■ Eeport of the progress of the geological survey of the State 



of A'^irginia for 1836. Eichmond, 1837, 4°, 14 pp. 



Reprinted, Phila., 1838, Svo, and in Geology of the Virginias, 1884, pp. 123- 



145. 



The Eocene deposits of the peninsula between the Potomac and Rappahannock rivers 

 are described by the author. 



