Maryland Geological Survey 



41 



1829 



Mokton, S. G. Description of the Fossil Shells which characterize the 

 Atlantic Secondary Formation of New Jersey and Delaware; including 

 four new species. (Eead Dec. 11, 1827 : Jan. 1, 1828.) 



Jour. Acad. Nat. Sci. Phila., vol. vi, 1829, pp. 72-100, plates iii-vi. 



Vandxem, Lardxer. Geological Observations on Secondary, Tertiary, 

 and Alluvial formations of the Atlantic coast of the United States of 

 America. Arranged from the Notes of Lardner Yanuxem by S. G. 

 Morton. (Eead Jan. 8, 1828.) 



Jour. Acad. Nat. Sci. Phila., vol. vi, 1829, pp. 59-71. 



. Eemarks on the characters and classification of certain 



American Eock Formations [in a letter to Professor Cleaveland]. 

 Amer. Jour. Sci., vol. xvi, 1829, pp. 254-256. 



1830 



Mortox, Samuel G. Synopsis of the Organic Eemains of the Ferru- 

 ginous Sand Formation of the United States, with Geological remarks. 

 Amer. Jour. Sci., vol. xvii, 1830, pp. 274-295; vol. xviii, 1830, pp. 243-250. 



. Additional observations on the Geology and Organic Eemains 



of New Jersey and Delaware. (Eead Jan. 19, July 6, 1830.) 

 Jour. Acad. Nat. Sci. Phila., vol. vi, 1829, pp. 189-204. 



1831 



Broxgxiaht, Alex. Eapport sur un Memoire de M. Dufresnoy, 

 Ingenieur des Mines, ayant pour titre : Des Caraeteres particuliers que 

 presente le terrain de Craie dans le Sud de la France et sur les pentes 

 des Pyrenees. Fait a l'Acad. roy. d. Sci., Apr., 1831. 



Annales des Sc. Naturelles, t. xxii, 1831, pp. 436-463, plate xiv. 



1832 



Duraxd, Elias. On the Green Color and Nature of the coloring 

 Agent of the Water of the Delaware and Chesapeake Canal, near the first 

 lock on the Chesapeake side. 



Jour. Phila. Col. of Pharmacy, vol. iii, 1832, pp. 276-277. 



