The National Geographic Magazine, Volume 74National Geographic Society, 1938 - Geography Indexes kept up to date with supplements. |
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Page 136
... plane sometimes would be rising at 15 feet or so a second , while two other planes , one directly above and the other below , were getting no lift at all . The result was confirmation of the theory that the warm air rises in a ...
... plane sometimes would be rising at 15 feet or so a second , while two other planes , one directly above and the other below , were getting no lift at all . The result was confirmation of the theory that the warm air rises in a ...
Page 140
... plane . You can see the joints where the plywood comes together , but you cannot feel them and neither can the wind . Lightness of weight is far from being the most important factor in building a sail- plane . In Germany an experimental ...
... plane . You can see the joints where the plywood comes together , but you cannot feel them and neither can the wind . Lightness of weight is far from being the most important factor in building a sail- plane . In Germany an experimental ...
Page 157
... plane , Al Cheesman spoiled his fur trousers with oil . But the corporal of police saved the day by selling Al his only pair , and chilled his legs in woolen pants until new fur ones could be made . On August 28 our reports predicted ...
... plane , Al Cheesman spoiled his fur trousers with oil . But the corporal of police saved the day by selling Al his only pair , and chilled his legs in woolen pants until new fur ones could be made . On August 28 our reports predicted ...
Contents
A Motor Caravan Rolls Across Sahara and Jungle Through Realms | 327 |
Wild Tribesmen With Topknots Roam the Little | 391 |
Marine Fishes and Fisheries Yield Vast Wealth from Alaska | 463 |
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