(CONTENTS OF VOL. I. 



Pkeface 



Introduction, 



Organic Remains of the Potsdam sandstone, 



— Calciferous sandstone, . . 



— Chazy limestone, 



— Birdseye limestone, 

 "^ — Black-river limestone, . . 



— Trenton limestone, 

 ^ Utica slate and Hudson-river group. 



Additions and Corrections, 



Organic Remains of the Taconic system. 



Tabular List of Species, 



List of Plates 





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