TABLE OF CONTENTS. 



ILLUSTRATIONS. 



PAGE. 



Alollusca of Monroe County. 



Plate I facing i6 



Plate 2 facing i6 



Plate 3 facing i6 



Plate 4 facing i6 



Plate 5 facing i6 



Plate 6 facing i6 



Plate 7 facing 16 



Plate 8 facing i6 



Revision of the Genus Magilus. 



Plate 9 facing 40 



The Genesee section. 



Plate 10 facing 104 



Hinged Brachiopoda. 



Figs. 1-7 116 



Separation of minerals. 



Fig. 1 123 



Figs. 2~3 124 



Fig. 4 •• 125 



Fig. 5 1 26 



Meteorite from Kenton County, Ky. ... 152 



Rudbeckia hirta. 



Plate II facing 170 



Kesen meteorite 1 72 



Circular inversion. 



Plate 12 facing 256 



Pitch Lake of Trinidad. 



Plate 13 facing 280 



