Feature

  1. First Glances at New Books

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  2. How to Keep Scraps

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  3. New Pterosaur Found

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  4. The Species Question

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  5. Color Test for Vitamin

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  6. Front Matter

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  7. Classics of Science: The Island Universes

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  8. Reading Character May Soon Be Possible

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  9. Yellow Fever Epidemic in Brazil

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  10. Grand Canyon Observatory Planned

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  11. Strange Tree with Many Uses

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  12. Man’s Origin Sought in China

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