Feature

  1. Presidential Address at American Association Calls for Conservation

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  2. Egg Supply Treatened by Invisible Raider

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  3. Says Infection May Lurk in “Harmless” Organisms

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  4. Contrasts Arguments of Darwin and Bryan

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  5. Insect Sounds Have No Meaning

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  6. Washington to Be Magnet for Scientists New Year’s Week

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  7. Germans Again Claim to Make Gold from Mercury

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  8. Orion Returns to Evening Sky

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  9. 141617

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  10. “Rotor” Ship Operates on Baseball Principle

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  11. Plan to Use Airplanes in Piloting Steamers

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  12. New Mechanical Larynx Helps Dumb to Speak

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