What of heat?
SECTION V.
What is a glacier?
What is the extent of the glaciers of the Alps?
What change does the mass of snow in the higher valleys of the glacier mountains undergo?
What is the source of supply to the glacier?
What is the cause of the motion of the glacier?
What is the usual annual motion?
Why will the glacier melt but little at its under side?
Where will the waste at the surface just equal the addition?