Show glaciers plunge glacier glaciers into the sea I 1 in n many cold countries soun oun tries and perish by their dismembered remains floating away as bergs but their end is by dissolution where tho the annual mean temperature rises consider considerably abl above the freezing point at some certain level they melt faster than they can flow and BO so terminate the level indeed Is a fluctuating abing ons on Ic elandio glaciers are now steadily advancing van cing swiss glaciers according to if forel have undergone during the present century five alternating periods of diminution and growth t is i s the L I 1 ifal cli changes anges occasioning and emphasized by these oscillations are very slight their ch character ar acter how ever is uni nistal cable and such as m might ight hare have been anticipated that is to say glacial decrease accompanies a n warm and dry cycle glacial increase one that is damp and cold without one additional degree of cold com it is conceivable that i persistently augmented deposit of snow upon the tile ger slen homer borner and tho the although otherwise scarcely perceptible might enable the rhone glacier to overwhelm brieg but this would bo an exceedingly small step toward the restoration of a former state of things when an ice stream close upon miles in len length lenth th starting from the same source crossed crossed the frozen or nonexistent lake of deneva and debouched debauched debou ched by culoz culiz upon lyons without severe cold as well as heavy precipitation ice could not possibly have gained BO so great an ascendancy and this was no local phenomenon I 1 it was simultaneously prevalent ut over widely separated tracts of the earths surface edinburgh review |