460 C. R. DRYER FINGER LAKE REGION OF WESTERN NEW YORK 



leys differ from normal stream valleys are due to the work of glacial ice, 

 and that during their occupancy by ice-fingers they suffered a deepen- 

 ing which may be conservatively estimated at 400 feet. 



In the absence of opposing evidence, this conclusion seems almost too 

 obvious to be debated. But since this paper was read Tarr has brought 

 forward* evidence discovered by him in the Cayuga and Seneca valleys 

 which opposes very grave objections to the theory of glacial erosion as 

 generally applicable to account for the Finger Lake basins. In view of 

 all the facts, the question must remain unsettled. More thorough and 

 extensive studies may lead to the final solution of the problem. 



* American Geologist, no. 33, p. 271. 



