V 



DEPARTMENT OF THE INTERIOR 



Franklin K. Lane, Secretary 



UNITED STATES GEOLOGICAL SURVEY 



George Otis Smith, Director 



Professional Paper 98— E 



THE PHYSICAL CONDITIONS AND AGE INDICATED BY 

 THE FLORA OF THE ALUM BLUFF FORMATION 



BY 



EDWARD WILBER BERRY 



Published May 27, 1916 



Shorter contributions to general geology, 1916 > 

 (Pagea 41-59) 



WASIIIXGTON 



GOVERNMEXT PRINTING OFFICE 



1916 



