r> m ' ConorAs OfioLoniQi-F. Tvtfkxattonat. 



COMPTE-HHNDO Pr.. X 



Medina Group 

 Clinton Croup 



j \ Niagara Limestone 



I I Onoudnga Salt Group 



t- . . 1 CorniftTous Limestone 



MAP OF NIAGARA RIVER FROM LAKE TO LAKE. 



