452 H. L. FAIRCHILD — GLACIAL GENESEE LAKES. 



Wherever a rock-cut occurs in a tributary of the Genesee, the top of 

 which is much higher than the valley bottom above, or upstream, it is 

 reasonable to assume a former ponding of the water or a morainal lake. 

 A large number of such lakes may doubtless be discriminated in the 

 Genesee basin. 



