482 



J. AV. SPENCER r RE-GLACIAL HANGING VALLEYS 



Lake showing the maximum depth of the drift filling, beyond the fact 

 that it is more than 250 feet at the side of the valley. Its direction leads 



FiQURK 2. — Sketch Map at Head of Seneca Lake 



to Sodus Bay, which is manifestly a continuation of the valley of Seneca 

 Lake, excavated through the hard strata into soft shales, so that there 



