Feature

  1. Too Hard or Too Soft: Life Sinks to Savagery

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  2. Photographic Film Aids Radium Tests

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  3. Smokers Less Long-Lived; Heavy Drinkers Die Earlier

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  4. Front Matter

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  5. Seeds Sleep 60 Years, Sprout When Houses Fall

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  6. In Science Fields

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  7. Duke University to Have Graduate Forestry School

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  8. Ultra-Short-Wave Beacons May Guide Future Aircraft

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  9. First Glances at New Books

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  10. Pictures through a Pipe

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  11. Washing Removes Vitamin D Raw Materials from Skin

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  12. Tests before All Flights Recommended for Pilots

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