484 



J. W. SPENCER PRE-GLACIAL HANGING VALLEYS 



rock, but Glen Eldridge is a deeper trench. To the south is Excelsior 

 Glen, with a much longer gorge, although the stream is insignificant. 

 This glen owes its size to the reopening of a buried valley, where the 

 stream in part flows over the rocky walls of the old valley. Tug, Hector, 

 and Texas valleys naturally meet in one, and these in ancient times 

 probably came down the now partly reopened valley near Excelsior Glen, 

 as pointed out by Mr. Corbitt. 



Hanging Valleys heee no Peoof of glacial Excavation 



Thus all of the hanging valleys about the head of Seneca Lake are 

 found to have corresponding ones buried by the drift during the different 

 Glacial periods, and do not require any one to evoke the glacial erosion 



FiGUEB 3. — Map of the High Plateau dissected hy Whetstone Gulf and its pre-Glacial 



Equivalent 



of the trunk valley, which had been deepened by the accession of the 

 waters of the Ghemung and its tributaries in the later pre-Glacial or 

 early Glacial days. AA'liere difficulties appear let us go into the field and 

 hunt for the facts, for the region is full of interest and the details are 

 not yet all brought to light. 



Whetstone Gulf and its pee-Glacial Valley 



Passing from western to northern New York, we find ourselves on the 

 high plateau west of the Black River, which separates it from the Adi- 

 rondack mass. The summit of the land tongue connecting this western 



