1Y 
DEDICATION. 
Laws of 1892, has made provision for the completion of this and the subse¬ 
quent volume. The present volume is the first fruit of that act, and I trust 
that its publication may give you personal satisfaction, and that it may com¬ 
mend itself to the student of geological science and prove worthy of a place 
among the great series of works comprising the Natural History of the State 
of New York. 
I have the honor to remain, 
With great respect, 
Your obedient Servant, 
JAMES HALL, 
State Geologist. 
Albany, N. Y., May 18/A, 1892. 
