■p.H AUJt 
NOTICE OF THE ROCE3 
4. 
25 " 
i. 
LYING BETWEEN THE 
CARBONIFEROUS LIMESTONES 
■ 
OE THE 
LOWER PENINSULA OF ''‘ 
i 
AND THE 
A/~ 
a i M !\ 'it A®! 
LIMESTONES OE THE HAMILTON GROUP: 
WITH DESCRIPTIONS OF SOME 
CEPHALOPODS 
SUPPOSED TO BE NEW TO SCIENCE. 
BY 
ALEXANDER WINCHEDL, 
STATE GEOLOGIST OF MICHIGAN. 
NEW HAVEN: 
PRINTED BY E. HAYES, 426 CHAPEL ST. 
1862 . 
