INTRODUCTION 



The available maps of Franklin county are, except for the ex- 

 treme northern part, so exceedingly inaccurate as effectually to 

 prohibit detailed mapping and study. With these imperfect maps 

 in hand the entire county has been rather hurriedly traversed, the 

 only parts wholly unexamined being a comparatively small tract 

 in the southeast corner around Mt Seward, in which tract there 

 can be little question as to the character of the rocks, and the 

 larger part of township 16, much of which is low and heavily 

 ■covered with glacial deposits. 



In 1897 I had the pleasure and advantage of the company of 

 Prof. A. C. Gill, of Cornell university, in the field. He was 

 •desirous of obtaining some acquaintance with the region at first 

 hand and nominally acted as assistant. I am under obligation 

 to him for many of the facts recorded in this report, and desire to 

 ♦express here my hearty acknowledgments. 



A part of the season of 1898 was spent in company with Prof. 

 ■J. F. Kemp in work along the line between Essex and Franklin 

 counties. This was the first opportunity afforded for comparing 

 •our respective results on the ground and was exceedingly help- 

 ful. 



TOPOGRAPHY OF THE NORTHERN ADIRONDACK^ 



The following observations on the topography are made wholly 

 unaided and unchecked by good maps, and are necessarily rather 

 general. The county is divisible topographically into two parts 

 whose junction is fairly abrupt. The one is the hilly or mountain- 

 ous tract which occupies the southern and larger part of the 

 county, and the other is a plain which slopes to somewhat the 

 west of north, reaching its highest elevation at the Clinton county 

 line. 



The plain. The underlying rocks of this plain consist of only 

 «lightly inclined beds of sandstone and dolomitic limestone (Pots- 



