TABLE OF CONTENTS 



FOR THE 



FINAL REPORT OF THE THIRD DISTRICT : 



TO SERVE ALSO AS AN INDEX, HAVING THE PAGES AFFIXED TO THE DIFFERENT PARTS OF 



WHICH IT IS composed; EACH PART BEING ARRANGED IN CONNECTED 



SUCCESSION AS TO SUBJECT. 



CHAPTER I. 



Tiat. 



Preliminary considerations, 9 



CHAPTER n. 



Enmneration of the Rocks, in the order of their superposition, beginning with the oldest : also a 

 tabular view of the New- York System, and of the system of deposits in the district ; and the 

 geographical distribution of the Primary System, and of the divisions of the New- York Sys- 

 tem in the district, 11 



CHAPTER m. 

 Primary S3rstem; consisting chiefly of gneiss and granite, 17 



CHAPTER IV. 

 Taconicor Intermediate period, 22 



CHAPTER V. 

 New- York System; with a detailed account of the rocks and groups, treated in the order enume- 

 rated in the second chapter, 24 



1. Potsdam sandstone, 28 



Gbol. 3d Dist. 1 



