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CONTENTS OF VOL. 1, 



Preface, 

 Introduction, 



Organic Kemains of the Potsdam sandstone, 

 ' — — ' Calciferous sandstone, 



— — Chazy limestone, 



— — Birdseye limestone, 

 -^ — Black-river limestone, 



— — Trenton limestone, 



— — ^ Utica slate and Hudson 

 Additions and Corrections, 



Organic Eemains of the Taconic system, 

 Tabular List of Species, 

 List of Plates, 



