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PRELIMINARIES 



Frontispiece, Plate I, Chemung Narrows ; type section of the 



Chemung group. 

 Preface. 

 Contents. 



Collector's Outfit, Plate II. 

 Explanation of Plate II. 



PART I. 



INTRODUCTION TO THE STUDY OE THE UPPER 

 DEVONIAN OE NEW YORK STATE. 



Occurrence of Rocks. 



Where rocks are seen. 



Rocks everywhere^ a hard lesson. 



Kinds of Rocks in Southern New York: 

 Shale. 

 Sandsto?ie. 



Calcareous layers, or limestone. 

 Conglomerate. 

 Explanation of compound terms, like arenaceous shale, etc. 



Definition and Explanation of a Few Important Geo- 

 logical Terms. (Illustrated by PI. Ill and Fig's, i and 2. 



Fossils. 



What they are. 



How they came to be in the Devonian rocks of Southern 

 New York. (Illustrated by Fig's. 3 and 4.) 



