PLATE IV. 
EJ 1T QJ A lL £3 LI © If J ® El frdDmni L .£ )/J l 3 '/i) EJ t d EJ J _a\ Ji -A\ f j\ 1. L £> j 
HORIZONTAL SCALE 10 INCHESTO 1 MILE . 
VERTICAL SCALE '/a INCH TO 100 FEET . 
Niagara 
Group 
N iag-ara I imeslpne 
Niagara Shale. 
Red Sandslone 
I Gray. Saiidstone . 
ReclShalv 
: .. » 
A 
