The National Geographic Magazine, Volume 92National Geographic Society, 1947 - Geography Indexes kept up to date with supplements. |
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Page 284
... tion for college under ideal cli- ADMIRAL FARRAGUT ACADEMY CULVER MILITARY ACADEMY MANLIUS SCHOOL lege preparatory on Lake Maxinkuckee . Emphasis on physical , intellectual , moral stamina . High scholastic stand- ards . Thorough ...
... tion for college under ideal cli- ADMIRAL FARRAGUT ACADEMY CULVER MILITARY ACADEMY MANLIUS SCHOOL lege preparatory on Lake Maxinkuckee . Emphasis on physical , intellectual , moral stamina . High scholastic stand- ards . Thorough ...
Page 406
... tion of a second by timing the echo of a high- pitched sound sent down to the bottom and back . Knowing the speed of sound in water , 4,938 feet a second , a skipper can tell within a fraction of an inch how deep the water is . Tiny ...
... tion of a second by timing the echo of a high- pitched sound sent down to the bottom and back . Knowing the speed of sound in water , 4,938 feet a second , a skipper can tell within a fraction of an inch how deep the water is . Tiny ...
Page 524
... tion in scale . Since all parts of the map lie within 15 degrees of this line , the scale varia- tion is slight , reaching a maximum of 37/2 percent along the top and bottom borders of the map . Through the whole central area the scale ...
... tion in scale . Since all parts of the map lie within 15 degrees of this line , the scale varia- tion is slight , reaching a maximum of 37/2 percent along the top and bottom borders of the map . Through the whole central area the scale ...
Contents
Adventures with the Survey Navy By Irving Johnson 131 | vi |
Erosion Trojan Horse of Greece By F G Renner 793 | xix |
Louisiana Trades with the World By Frederick Simpich With 21 illustrations in color | xxxvi |
Copyright | |
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