vr r 
PALEONTOLOGY 
C{ V-' 
f 
rf-.-v* 
V 
v\ 
NEW 
YORK. 
/ lY"- 
VOLUME II. 
CONTAINING DESCRIPTIONS OP THE ORGANIC REMAINS OP THE LOWER 
MIDDLE DIVISION OF THE NEW-YORK SYSTEM, 
(EQUIVALENT IN PART TO THE MIDDLE SILURIAN ROCKS OF EUROPE.) 
BY JAMES HALL. 
ALBANY: 
PRINTED BY C. VAN BENTHUYSEN. 
1852. 
