The National Geographic Magazine, Volume 105National Geographic Society, 1954 - Geography Indexes kept up to date with supplements. |
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Page 83
Using one , the girls count rays given off by a plant containing a radioactive element . 84 Life's Built - in Atomic ... Tracer experiments showed tobacco plants were taking up almost none of this fertilizer . Corn plants , it has been ...
Using one , the girls count rays given off by a plant containing a radioactive element . 84 Life's Built - in Atomic ... Tracer experiments showed tobacco plants were taking up almost none of this fertilizer . Corn plants , it has been ...
Page 84
When animals or humans eat the plants , the isotope enters their bodies . During life it gives off an average 16 rays a minute per gram of carbon . At death its radioactivity begins to slow down at a fixed rate .
When animals or humans eat the plants , the isotope enters their bodies . During life it gives off an average 16 rays a minute per gram of carbon . At death its radioactivity begins to slow down at a fixed rate .
Page 427
... made of grain seeds and various plants . The porridge had consisted chiefly of bar- ley , linseed , gold - of - pleasure , and persicaria -all cultivated plants . But it contained also 430 a considerable number of wild plants , such as.
... made of grain seeds and various plants . The porridge had consisted chiefly of bar- ley , linseed , gold - of - pleasure , and persicaria -all cultivated plants . But it contained also 430 a considerable number of wild plants , such as.
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Contents
Britains Fabulous Crown Colony on the South China | 1 |
Scotlands Golden Eagles at Home Climbing Perilous Cliffs to Lofty Eyries | 9 |
Sierra High Trip Hikers Follow Flowery Trails in an Unspoiled | 14 |
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Address American atomic Beach beautiful Bermuda bird blue boat body breed building built called camera Canyon carry century City cliff color Company cover divers dogs early East energy enjoy feet field fish give green hand head Hill identifies Illustrations island Italy Kodachromes land later lead light living looked Michigan miles Mountain moved National Geographic Magazine National Geographic Society natural night North once Park Photographer plants Port production radioactive River road Robert rock ship side South stream Street trip turned United vacation Valley walls Washington watched West Write York Zion
Bibliographic information
| Title | The National Geographic Magazine, Volume 105 The National geographic magazine, National Geographic Society (U.S.) |
| Contributor | National Geographic Society (U.S.) |
| Publisher | National Geographic Society, 1954 |
| Original from | the University of Michigan |
| Digitized | 20 Feb 2009 |
| Export Citation | BiBTeX EndNote RefMan |