THE FAUNA OF THE KEYSER 



MEMBER OF THE HELDER- 



BERG FORMATION IN 



MARYLAND 



A DISSERTATION 



Submitted to the Board of University Studies of The Johns Hopkins University 



in conformity with the requirements for the degree oi 



Doctor of Philosophy 



BY 



THOMAS POOLE MAYNARD 



BALTIMORE 

 THK JOHNS HOPKINS PRESS 



1913 



