National Geographic : 1968 Jun
BENJAMIN FRANKLIN'S MAP OF THE GULF STREAM 0 Tux9'1 ,-. E;SKIM LUXS r LAB ADOR % 41 U xr ndlnd. NOIRrif CABkOLI2NA F . c 50 'R AlE I Go A COURTESY COASTANDGEODETICSURVEY Don't fight the Gulf Stream, Benjamin Franklin advised captains of British mail packets sailing west to the New World in 1769. As Deputy Postmaster General of the Colonies, he had received complaints of letters taking two weeks longer westbound than eastbound. The American Philosophical Society printed Franklin's chart in 1786 with another member's map of the herring migration (upper left). Two Faces of the AS THERE always been an Atlantic Ocean? Or were Old World and New -Europe and Africa, North and South America-once a single great land mass? What gigantic forces raised the world's mightiest mountain range down the center of the Atlantic basin? Is it still growing, and the ocean itself becoming wider? Such scientific enigmas dramatically come to life on the latest and final map of the National Geographic Society's World Atlas Series, a double portrait of the Atlantic Ocean distributed with this issue.* On one side of the new map, the visible face of the Atlantic and the lands around it unfold 794 in a single sweeping view of one-third of earth's circumference. All of South America, nearly half of North America, and much of Europe and Africa appear-rivers, moun tains, cities, and nations, including four of the world's youngest: Guyana (rhymes with Di ana) and Barbados in the Americas, Botswana and Lesotho in southern Africa. On its other side, the Atlas Plate presents an unseen panorama, the Atlantic Ocean Floor, a vast and mountainous submarine *Additional copies of the Atlantic Ocean-Atlantic Ocean Floor map may be ordered-along with any others of the 55 previous World Atlas Plates-for 50 cents each, plus 10 cents postage, from Dept. 509, Na tional Geographic Society, Washington, D. C . 20036.