Feature

  1. Nature Ramblings: Mosquitoes and Ducks

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  2. Animals of Cooler Regions Larger than Warm-Land Kin

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  3. New Lamps Join Familiar Bulbs to Brighten Life

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  4. New Swedish Process Freezes Salt from Ocean

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  5. Remedy for Influenza Hinted in New Report

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  6. U. S. Joins 14 Other Nations Using Robot Radio Alarm

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  7. Front Matter

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  8. Tandem Propellers for Planes Turn in Opposite Directions

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  9. Draw-Casting New Trick in Making Copper Rods

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  10. Dead Men’s Heads Carved on Ancient Temple in Peru

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  11. Spring Comes

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  12. In Science Fields

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