Illustrations. 
PLATES I—lIi1.— Cambrian fossils. 
PLATES LIV._V.—Beekmantown fossils. 
PLATES VI—-XV.—Trenton fossils. 
PLATE XVI.—Hudson River fossils. 
PLATES XVII.-_X XII.—Decker Ferry fossils. 
PLATE XXITI.—Rondout fossils. 
PLATES XXIV.—XXV.—Manlius fossils. 
PuatTes XX VI._XXXII.—Coeymans fossils. 
_Puates XXXIITI.-XL.—New Scotland-Becraft fossils. 
PLATES XLI—XLIV.—Lower Oriskany fossils. 
PLATES XLV.—U.— Oriskany fossils. 
PLATE LI.—Onondaga fossils. 
PLATE LII.—Newfoundland fossils. 
_ PLATE LITI.—Hamilton fossils. 
(v) 
