National Geographic : 1963 Dec
into flight. Hidden phalanxes, massed in the thousands, await their turn to get a runway. Lake Magadi in southern Kenya to my home in Nairobi. He came to me because, as Cu rator of the Department of Ornithology at the Corvndon Museum, I had been respon sible for the fact that Alan was camping out at Magadi to guard these shy flamingos. Magadi lies in one of the lowest spots of the (reat Rift Valley, the giant earth fault that cuts through eastern Africa (opposite). The finger-shaped lake has no outlet, and forms an evaporating pan two miles wide and 18 miles long, where saline, alkaline waters feeding it from subterranean springs are concentrated into a stronger and stronger solution. Crusts form on the surface, in some places 10 to 12 feet thick. The Magadi Soda Com pany, Ltd., dredges up this crust, called trona, and turns it into soda ash (sodium carbonate), a valuable industrial chemical used in making glass, soal, laper, and other products. 937 yr~ l"