MARYLAND GEOLOGICAL SURVEY 51 



1831. 



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

 Ingenieur des Mines, ayant pour titre: Des Caracteres 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. JSaturelles, t. xxii, 1831, pp. 436-463, Plate XIV. 



1832. 



Durand, 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. 



Morton, S. G-. On the analogy which exists between the Marl of 

 New Jersey, &c, and the Chalk formation of Europe. 



Amer. Jour. Sci., vol. xxii, 1832, pp. 90-95. 



Also published separately. 



1833. 



Finch, J. Travels in the United States of America and Canada. 

 London, 1833. 8vo. 455 pp. 



1834. 



Ducatel, J. T., and Alexander, J. H. Eeport on the Projected 

 Survey of the State of Maryland, pursuant to a resolution of the Gen- 

 eral Assembly. Annapolis, 1834. 8vo. 39 pp. Map. 



Md. House of Delegates, Dec. Sess., 1833, 8vo, 39 pp. 



Another edition, Annapolis, 1834, 8vo, 58 pp., and map. 



Another edition, Annapolis, 1834, 8vo, 43 pp., and folded table. 



Amer. Jour. Sci., vol. xxvii, 1835, pp. 1-38. 



Morton, S. G. Synopsis of the organic remains of the Cretaceous 

 group of the United States. To which is added an appendix contain- 

 ing a tabular view of the Tertiary fossils hitherto discovered in North 

 America. Phila., 1834. 8vo, 88 pp. 



(Abst.) Amer. Jour. Sci., vol. xxvii, 1835, pp. 377-381. 



1835. 



Ducatel, J. T. Geologist's report 1834. pp. 84. 



[Another edition.] Eeport of the Geologist to the Legisla- 

 ture of Maryland, 1834. n. d. 8vo, 50 pp. 2 maps and folded tables. 



Ducatel, J. T., and Alexander, J. H. Eeport on the New Map of 

 Maryland, 1834, [Annapolis] n. d. 8vo, 59, i, pp. Two maps and one 

 folded table. 



Md. House of Delegates, Dec. Sess., 1834. 



