University oi the State ol New York Bulletin 



Entered as second-class matter August 2, 1913, at the Post Office at Albany, N. Y., 

 under the act of August 24, 1012 



Published fortnightly- 



No. 573 



ALBANY, N. Y. 



August 15, 1914 



New York State Museum 



John M. Clarke, Director 

 Museum Bulletin 172 



GEOLOGY OF THE ATTICA-DEPEW 

 QUADRANGLES 



BY 

 D. D. LUTHER 



PAGE 



Introduction 5 



Description of formation 7 



Siluric 7 



PAGE 



Devonic 9 



Bibliography 30 



Index 31 



