86 W. tJPHAM — DERIVATION OF KAMES, ESKERS, AND MORAINES. 



With regard to the upward ice-currents in the glacier, I cannot see 

 how they could be produced, or if ]:>roduced how they could be preserved. 

 Either a hole would be left under the ice, into which the ice would 

 sink by its own weight, or there would be left a mass of stagnant ice 

 over which the rest of the glacier would move. It does not appear why 

 this mass of ice should remain at rest when the ice immediately behind 

 it, in front of it, and above it moves. 



