BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 2, pp. 607-662 



PROCEEDINGS OF THE THIRD ANNUAL MEETING, HELD 

 AT WASHINGTON DECEMBER 29, 30 AND 31, 1890 



J. J. STEVENSON, Secretary 



(With Index. Also Contents, etc., of Volume 2, pp. i-xiv.) 



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ROCHESTER 



PUBLISHED BY THE SOCIETY 



August, 1891 



