﻿Review of the New York Geological Reports. 



299 



Brine springs occur throughout the whole extent of the forma- 



tion 



portion 



of the mass, especially at the junction of the second division with 

 the underlying impervious beds. This salt water is not sufficient- 

 ly pure and strong to compete now with the brines of Salina, but 

 formerly a considerable quantity of salt was manufactured from 

 the springs in question. The existence of brine springs along the 

 whole range of the Medina, together with the lithological similar- 

 ity of its deposites to the red shale below the Onondaga salt group, 

 caused it to be confounded for a time with this latter formation. 



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