ANNALS OF THE NEW YORK ACADEMY OF SCIENCES 

 Vol. XXI, pp. 11-86, pll. III-VI 



Editor, Edmund Otis Hovey 



GEOLOGY OF THE CORTLANDT SERIES 

 AND ITS EMERY DEPOSITS 



BY 



G. Sherbuene Kogers 



NEW YOKK 



PUBLISHED BY THE ACADEMY 



15 May, 1911 



