ely ▁cre v ass ed ▁than ▁in ▁ 1 9 1 0 ▁when ▁travel ing ▁upon ▁its ▁surface ▁was ▁impossible . ▁Gl enn ▁gives ▁a ▁v ivid ▁description ▁of ▁Y ale ▁and ▁Harvard ▁gla ci ers ▁as ▁he ▁saw ▁them ▁in ▁ 1 8 9 8 ▁from ▁College ▁F i ord . ▁" The ▁day ▁was ▁dry ▁and ▁clear . ▁Direct ly ▁in ▁our ▁front ▁was ▁the ▁most ▁impos ing ▁sight ▁we ▁had ▁yet ▁seen — I ▁might ▁add ▁more ▁impos ing ▁than ▁any ▁we ▁saw ▁during ▁the ▁season . ▁G list ening ▁in ▁the ▁sun ▁were ▁two ▁large ▁gla ci ers , ▁which ▁we ▁named ▁the ▁' T win ▁Gla ci ers ,' ▁t ▁the ▁pair ▁being ▁separated ▁by ▁a ▁short ▁r idge ▁or ▁h og back ▁that ▁runs ▁down ▁to ▁salt ▁water . ▁In ▁front ▁of ▁the ▁one ▁on ▁our ▁right ▁the ▁sea ▁ice ▁extended ▁for ▁over ▁ 3 ▁miles , ▁while ▁in ▁front ▁of ▁the ▁other ▁this ▁sea ▁ice ▁extended ▁at ▁least ▁twice ▁that ▁distance . ▁This ▁ice ▁was ▁covered ▁with ▁snow ▁several ▁feet ▁in ▁depth . ▁We ▁soon ▁discovered ▁that ▁it ▁would ▁bear ▁up ▁the ▁weight ▁of ▁a ▁man ▁and ▁that ▁we ▁could ▁make ▁no ▁head way ▁against ▁it ▁with ▁the ▁boat . ▁Each ▁of ▁these ▁gla ci ers ▁is ▁what ▁is ▁term ed ▁' live ' ▁or ▁' working ' ▁gla ci ers . ▁The ▁front ▁of ▁each ▁was ▁an ▁almost ▁per pend icular ▁mass ▁of ▁ice , ▁from ▁which ▁immense ▁pieces ▁were ▁constantly ▁breaking ▁off ▁and ▁falling