Feature

  1. Classics of Science: Radio-Active Substances

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  2. Front Matter

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  3. Indian Girl Saves Legends of Race

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  4. Early American Ware

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  5. Did Roger Bacon Have a Telescope?

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  6. Leprosy and Fungus

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  7. Measures Speed of Lightning

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  8. New Aid for Sub Crews

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  9. Thin Clothing Healthful

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  10. The Highways of the Birds

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  11. Plague of Pharaoh Still with Us

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  12. Serum for Measles

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