PREFACE. 
7 
and advice, but for gratuitous aid and influence which could only arise from a 
deep personal interest in the beneficial results of the Survey. The Hon. Archi¬ 
bald McIntyre, and Mr. David Henderson, are entitled to my warmest thanks 
for supplying the means of exploring the forests and mountains of Essex. I have 
received essential aid from Dr. Crawe, of Watertown, in collecting the fossils of 
the Trenton limestone. Dr. Benton, of Oxbow, has freely assisted me while in 
his neighborhood; and the same acknowledgment is due to Dr. Murdock, for¬ 
merly of Gouverneur. Prof. F. Benedict, of the University of Vermont, volun¬ 
teered his services to complete the exploration of the mountains of Essex, which 
had been commenced b}' myself: the result of his labors speaks for itself in this 
volume. Mr. Redfield has also contributed largely to the same object. I was 
assisted during parts of two seasons, by my friend Prof. A. Hopkins, of Williams 
College. He was engaged principally in magnetic observations; and though 
many important facts were discovered, the series of observations were considered 
by himself as too imperfect to be published. Mr. Richard Taylor also accom¬ 
panied me to the iron mines of Adirondack, and from him I received many useful 
hints and suggestions. Mr. Edwards Hall rendered me efficient service as an 
assistant during one season. My principal assistant during the survey, has been 
my son, E. Emmons, Jr. The drawings, particularly the fossils, were executed 
by him upon wood ; and for their accuracy, they are entirely indebted to his skill 
in delineation. I am particularly indebted to Mr. Patterson, of the State Print¬ 
ing Office, for his unwearied exertions in superintending and correcting the sheets 
as they were printed, and for important suggestions during the progress of the 
work. To sjieak, however, of all who have aided me in the Survey, would 
require more space than can be spared in this Preface. To my numerous friends 
in the Northern District, I give my thanks generally for their attentions, and the 
assistance which they were ever ready to bestow. 
Albany, January 1, 1842. 
EBENEZER EMMONS. 
