The National Geographic Magazine, Volume 115National Geographic Society, 1959 - Geography Indexes kept up to date with supplements. |
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Page 11
... feet . She I had slowed Nautilus to 10 knots . measures 50 feet from keel to the top of her " sail , " the streamlined tower housing peri- scopes and antennas . Therefore , at this shallow depth , we had only 80 feet of water for ...
... feet . She I had slowed Nautilus to 10 knots . measures 50 feet from keel to the top of her " sail , " the streamlined tower housing peri- scopes and antennas . Therefore , at this shallow depth , we had only 80 feet of water for ...
Page 118
... feet . Here , more than 50 feet into the tunnel , the floor ran nearly level . Our gauges were cali- brated for sea water , which is denser than fresh water by 21⁄2 percent , so that the actual depth was nearer 144 feet . We remained at ...
... feet . Here , more than 50 feet into the tunnel , the floor ran nearly level . Our gauges were cali- brated for sea water , which is denser than fresh water by 21⁄2 percent , so that the actual depth was nearer 144 feet . We remained at ...
Page 311
... feet of hard crystal ice on the surface , as much as 30 feet of loose pack underneath . Rocking Water Breaks Ice Jam Frank Matejka , project manager for the U. S. power engineers , had an idea . In prin- ciple , it was the same as ...
... feet of hard crystal ice on the surface , as much as 30 feet of loose pack underneath . Rocking Water Breaks Ice Jam Frank Matejka , project manager for the U. S. power engineers , had an idea . In prin- ciple , it was the same as ...
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ACADEMY Accredited American beach beautiful birds boat boys buildings camera camp Canada Canadian Catalog cenote Chicago coast College color copter coupon Dept Dzibilchaltun eyes feet fire fish Frigidaire Funchal GEOGRAPHIC STAFF N.G.S. giant guano helicopter Indians Insurance Company Island KODACHROME BY NATIONAL KODACHROMES Kraho Lake land light living look LUIS MARDEN Mandelbaum Gate Martinique Maya miles MILITARY mountain NAME ADDRESS National Geographic Magazine NATIONAL GEOGRAPHIC PHOTOGRAPHER NATIONAL GEOGRAPHIC SOCIETY NATIONAL GEOGRAPHIC STAFF National Geographic-It identifies Nautilus North Pacific Park Pole pool port Quemoy ride River road rock ROTC sail School Scott Base sea horse Seaway ship skiers slope Sno-Cat snow South Street summer swim Tall Kayf tion Titanus told tour town Travel Agent trees trip vacation village watched West Write Yazidis York Yucatán