Salt Lake Telegram | 1933-06-10 | Page 4 | Ups and Downs of Bearing Land Bridge Are Told

Ups an and lD Downs Of Bering Land Bridge Are Told The ups and downs of the isthmus that at various times in the past conne connected connected con con- ne ted the continents of at North AmerIca America Amer Amer- ica lea and Asia where now the Bering strait separates th them m were described before a a meeting in Vancouver of the fifth Pacific science congress by Dean Edward W. Berry of at the Johns Hopkins university I This land bridge over which the tw two contInents exchanged plant and animal populations has be been n above water some five separate times durin during during dur dur- in ing the age of at reptiles and the succeeding suc sue age of mammals Its most recent emergence was during the pleistocene or great ice age ge when woolly mammoths mammoths' and giant bison tramped back backan and fo forth across it it