Feature

  1. Nerves Grow as If with Aim A.A.A.S. Prize Paper Shows

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  2. Front Matter

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  3. Scientific Theory Upset by Hairs of 300 Arabs

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  4. Discovery Shows Darwinian Evolution Governed by Law

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  5. Gland Extract May Be Essential to All Tissues

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  6. Animal Immunized against Parasite for First Time

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  7. Prize Winner Describes Study of Living Nerves of Tadpole

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  8. Nature Ramblings: A Roughneck in Fine Feathers

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  9. [Photograph]: Tide-Predictor

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  10. What Leapyear Skies Have to Offer

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  11. In Science Fields

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  12. Vitamin Prepared Chemically for First Time in History

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