Mar., 1910.] 
Pennsylvanian Limestones. 
*33 
KEY TO ACCOMPANYING MAP. 
The streams, cities and villages, and points of outcrop or 
place of occurrence of limestone are fairly accurately located 
on the accompanying map. Those streams, towns, and outcrops 
mentioned in the foregoing description are for the most part, 
located on the map. Streams are named by letter, and points 
of outcrop by numbered cross. 
STREAMS 
A Nimishillen Creek 
B West Branch Nimishillen 
C Middle Branch Nimishillen 
D East Branch Nimishellen 
E Mahoning River 
F Deer Creek 
G Island Creek 
H Little Mill Creek 
I Turkey Broth Creek 
J Meander Creek 
K McMahon Run 
L Infirmary Run 
M Diehl Creek 
N Mill Creek 
O Neff Run 
P Indian Creek 
Q Y ellow C reek 
R Burgess Run 
S Furnace Run 
