CONTENTS OF VOL. I. 
PA.SES- 
Preface, 
Introduction, 
Organic Remains of the Potsdam sandstone, 
— — Calciferous sandstone, . . 
— — Chazy limestone, 
— — Birdseye limestone, 
— — Black-river limestone, . . 
— •— Trenton limestone, 
— — Utica slate and Hudson-river 
Additions and Corrections, 
Organic Remains of the Taconic system, 
Tabular List of Species, 
List of Plates, 
. . ix - xiv 
. . xv - xxiv 
1-4 
5-13 
14 - 36 
37-46 
46-60 
60 - 249 
group, 250 - 314 
315 - 31S 
319 - 320 
321 - 333 
334 - 338 
