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Bradley, F. H. 



On a "Geological Chart of the United States," etc. A. J. S. [.3], XII., 

 1876, (289). 



Britten, N. L. 



On the Geology of Richmond County, New York. N. Y. Acad. Sci. Ann., 

 II., 1881, (168-170), map and sections. 



Canada. 



Alhis to Geology o£ Canada. Montreal, 1863. 



Chapin, A. B. 



Junction of Trap and Sandstone ; Wallingford, Conn. A. J. S. [1], XXVII., 

 1835, 104-112. 



Cleaveland, P. 



An Elementary Treatise on Mineralogy and Geology. 2d Edition. Boston, 

 1822, (746, 759). 



Clennson, T. G. 



Notice of a Geological Examination of the Country between Fredericksburg 

 and Winchester, in Virginia, including the Gold Region. Penn. Geol. 

 Soc. Trans., I., 1835, (311-313). 



Cook, G. H. 



a. Geological Survey of New Jersey. Map of the Triassic Formations. 

 • 1867. 



b. Geology of New Jersey. Newark, 1868, (173-238, 336-339). 



c. Geological Survey of New Jersey. Annual Report for 1879. Trenton, 



1879, (18-35). 



d. Geological Survey of New Jersey. Geological Map of New Jersey. 



1881. 



Cook, G. H., and Smock, J. C. 



Geological Survey of New Jersey. Report on the Clay Deposits, etc. 

 Trenton, 1878, (170, 304-306). 



Cooper, T. 



On Volcanoes and Volcanic Substances, with a particular Reference to the 

 Origin of the Rocks of the Floetz Trap Formation. A. J. S. [1], IV., 

 1822, (239-243). 



Credner, H. 



Geognostische Skizze der Umgegend von New York. Deutsch. Geol. Gesell. 

 Zft., XVIL, 1865, (392-394). 



Dana, E. S. 



a. Abstract of a Paper on the Trap Rocks of the Connecticut Valley. A. 

 J. S. [.3], VITL, 1874, 390-392. 



b. Trap Rocks of the Connecticut Valley. Amer. Assoc. Proc, 1874, 

 45-47. 



