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. 
Page. 
Preliminary considerations, ........... 9 
CHAPTER II. 
Enumeration 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 III. 
Primary System; consisting chiefly of gneiss and granite,... 17 
CHAPTER IV. 
Taconic or Intermediate period,. 22 
CHAPTER Y. 
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 
Geol. 3d Dist. 
1 
