MARYLAND GEOLOGICAL SURVEY xlvii 



1839. 



Wagner, William. Description of five new Fossils, of the older 

 Pliocene formation of Maryland and North America. (Eead Jan. 1838.) 



Jour. Acad. Nat. Sci., Phila., vol. viii, 1st ser., 1830, pp. 51-53, with one 

 plate. 



1840. 



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

 No. 3. 1840. [Descrijition on cover 1840-1842.] pp. 33-56. Plates 

 xviii-xxix. 



Eepublished by Wm. H. Dall, Washington, 1893 



1841. 



Booth, J. C. Memoir of the Geological Survey of the State of Dela- 

 ware; including the application of the Geological Observations to Agri- 

 culture, i-xi, 9-188 pp. Dover, 1841. 



Conrad, T. A. Description of Twenty-six new Species of Fossil 

 Shells discovered in the Medial Tertiary Deposits of Calvert Cliffs, Md. 

 Proc. Acad. Nat. Sci., Phila., vol. i, 1841, pp. 28-33. 



Gould, Augustus A. A Heport on the Invertebrate Animals of Mas- 

 sachusetts, comprising the Mollusca, Crustacea, Annelida, and Kadiata. 

 Published by the order of the Legislature. 8vo, pp. 373. Cambridge, 

 Mass., 1841. [See p. 85.] ^ 



Conrad, T. A. New Species of Fossil Shells from Calvert Cliffs, Md. 

 Proc. Acad. Nat. Sci., Phil., vol. i, 1841, pp. 28-33. 



1842. 



Conrad, T. A. Observations on a portion of the Atlantic Tertiary 

 Region, with a description of new species of organic remains. 

 2nd edit., 1854; 3rd edit., 1856. 



Description of twenty-four new species of Fossil Shells chiefly 



from the Tertiary Deposits of Calvert Cliffs, Md. (Read June 1, 1841.) 

 Jour. Acad. Nat. Sci., Phila., vol. viii, 1st ser., 1842, pp. 183-190. 



De Kay, James E. Zoology of New York or the New York Fauna. 

 Nat. Hist, of New York; 2 vol., pt. 1, Mammalia. 



Harlan, R. Description of a New Extinct Species of Dolphin from 

 Maryland. 



2nd Bull. Proc. Nat. Inst. Prom. Sci., 1842, pp. 195-196, 4 plates. 



