Vol. 19 No. #528
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More Stories from the May 23, 1931 issue

  1. Improvements to Autogyro Make Craft More Useful

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  2. Yearly Food Bill of Insects Could Build Whole New Fleet

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  3. Redwood Heart-Rot Caused by New Fungus

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  4. Architects Examine Thoroughly Modern Home

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  5. Mineral Oil Preserves Eggs on Large Scale

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  6. Toy Highway Tests New Drivers without Dangers of Road

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  7. Explorer Finds First Traces of Unknown Everglades Tribe

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  8. Experimenting with Millions of Volts

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  9. In Science Fields

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  10. New S-Rotor Runs Efficiently on Both Wind and Water

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  11. British House Planned to Shut out Traffic Din

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  12. Seasickness Affects Women More Often than Men

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  13. How Scotland’s Mountains Arose: “A Classic of Science”

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  14. Animals of Old West Will Get Chance to Stage Comeback

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  15. One Chunk of Ice Lasts All Summer

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  16. Most Women like Their Work but Some Jobs Disdained by All

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  17. Drugs Relieve Pains of Lead and Gallstone Colic

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  18. Nature Ramblings: Wild Iris

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  19. Search for Comet in Eastern Morning Sky

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  20. Touch of Spring Fever Makes Whole World Kin

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  21. First Glances at New Books

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  22. Front Matter

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  23. New Process Economically Recovers Zinc from Ores

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  24. [Photograph]: Demonstrating Improvements on the White House Lawn

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