Show to est men ace 9 macmillan expedition will study recent movements of glaciers in greenland now new york Is another IN ico age coming coining are tile the scenes of the latter pleistocene ago the geologic period which immediately preceded our own to be repeated revea ted and if so what will it mean to the inhabitants of the tha earth in an effort to determine whether there la Is any likelihood of such a cabil occur occurrence renco the macmullan expedition tion recently left for greenland to study the recent movements of gla clera on that island continent the arho great ice age ended according to scientists about rears cars ago but the ico ice has left its footprints by which its advances and retreats and movements may be traced during daring the ico ice age or the glacial period there was a marked lowering of temperature over the whole earth and or square miles of the globes surface became entirely covered with ice half the region thus ibus covered lay in north america more than half the remain oven even to tho the tropical forests of india and the mountains of asia occurred where there had been no tco ice previous to the ice age on mountains which now bear burdens of con inual snow and ice the snow line descended feet lower than it Is at present human beings succumbed imagine great sheets of ice and hard packed snow creeping ever so slowly but surely over the temperate areas of europe and america anh and imparting to thorn them tin an arctic cold to which many of those early huro funtan an beings who in their savagery were little bettor better than beasts succumbed these mighty layers of ice miles andI andi miles in thickness spread over rivers and mountains and plains oiling filling up the valleys and the lakes and the sena seas in europe the ice fee moved forth from the scandinavian highlands tin and burled buried the lowlands of Belg belgium tum russia den murk mark germany acri nany and holland olland li nod and then croyal lug ng the north sen sea touched tile shores of britain besides these reat great continental ice shoots sheets laro large in glaciers formed in tile val leya of the alps ind spread out lu in till nil directions separate Se glaciel gla clel 9 joined on the plains of france und and italy and in tho rhino and danube valleys four times the enormous sheets of ice advanced and covered cojei od the land pour four tonies they retreated after uncounted centuries each thue tonic leaving it a terminal moraine of boulders earth and other kotlier carls which serves as tin indication of the route of tim ice on oil its advance southward the second of these four glacial advances brought the lie ice farther south in north america ica tho terminal alne of tho ice clin still bo be observed and followed in a roughly correct line over LOUR long island through tile the town of ns as far south as perth N J the line then runs in a northwesterly direction n through it point where tile town of morristown Is now located tho smooth smoot li low lov plains of the alie upper mississippi volley valley were covert covered d with ice fee while the ohio find missouri dIsso url rivers owe their beginning to the glacial ad vill ces of the ico ice age leaves its mark not only by tile terminal moraines mo raines which indicate tile extent of tile nirl ous olis fee cn can tho route of gla gin elation bo be rent rend tile alio passage of ice over the hard rocky floor of tho the earth leaves n peculiar kind of marking tills this erosion croaton duo to tile tho work of gill gl alers and ice sheets Is of it si rounded linture imparted to tho the rocks which contrasts decidedly with fit tho 0 phina pinnacled cled irregular surfaces which chic it tire are the work of ordinary weathering the whole of the enormous island of greenland Is covered with tin n fee aco cap cal or fee sheet which pressing down under tinder tile weight of accumulated snow of centuries Sui subparts parts a gradual movement to tile various glaciers dillong its 1 edges |