PLATE X 
WAYNE COUNTY Western,par/.. 
Ontario — 
Macedon 
.. Medina* Sandstone 
Clinton Groups 
,Limestone ~ 
Jv\tag & (s ro ups: 
. Onon.da.gg Salt Gr oup. 
'UluA'uzl Hills near M'onteiuiTrzat 
Man^heste 
-frft Q j 
ONTARIO COUNTY. 
..X 
Portage Gr oup. 
"—Genesee Slate . 
'ace of the ThJLylwie s to ne 
ncriniZal Limestone. 
- Hamilton Gfou/u. 
0 n o tl d a. g as 
ONTARIO & YATES COUNTY . 
Benton 
Milo 
3 a-TTinglo -0 - 
Vienna 
S eneca 
Oyiisurn. 
-4—_ Chemung Group 
_ 1 -- —Portage Group. 
■Q tl % o tl d a. g ct. 
G/Mmu«4 ludLafe 
Salt 
Marcellas Shale Hamilton Groups 
* ^ X. 
STEUBEN COUNTY 
IILuzsl -anal,.dank— Shai e s — noth Greenish, and grey SanOs 
*Old Red Sandstone 
denesee Slate 
' ' allyLzmestone 
— Eacrinltal Limes ton. 
Tro up aVor g'. 
Shales and Sandstones 
LePel of CrooKedCl 'aide ~Vp7 Ft 
level of La/ce Erie 33* rt 
Level of Lake Ontapio 
