Prosser — Hamilton and Chemung Series. 



117 



is an impure limestone, then calcareous shales, and at the top of the cascade 

 are two layers of impure limestone, separated by a shaly parting, the upper 



\52a" are. vox. 



120' 



layer being six inches thick. Resting on this upper limestone are about two 

 feet of calcareous, shaly layers, the distance from the foot of the cascade to its 

 top being fourteen feet. From the base of the lowest calcareous stratum to 



