New York State Museum Bulletin 



Entered as second-class matter November 27, 191s. at the Post Office at Albany, N. Y., under 



the act of August 24, 1912. Acceptance for mailing at special rate of postage provided for 



in section 1103, act of October 3, 1917, authorized July 19, 1918. 



Published monthly by The University of the State of New York 

 Nos. 229-230 ALBANY, N. Y. January-February 1920 



The University of tlie State of New York 

 New York State Museum 



John M. Clarke, Director 



GEOLOGY OF THE MOUNT MARCY 

 QUADRANGLE, ESSEX COUNTY, NEW YORK 



JAMES F. KEM 



WITH A CHAPTER 



ON THE PLEISTOCENil GEOLOGY BY HAROLD L. ALLING 



AND A CONTRIBUTION ON THE REACTION-RIMS OF ANORTHOSITES 



BY MAX ROESLER 



Mi4ir-S20-i300 



ALBANY 



THE UNIVERSITY OF THE STATE OF NEW YORK 



1921 



