Vol. 21 No. #580

More Stories from the May 21, 1932 issue

  1. [Photograph]: Eternal Snow in California?

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  2. Depression May Mark America’s Coming of Age

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  3. Electrically Produced Fever Relieves Asthma Sufferers

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  4. Finding of Arrow Head near Mammoth Bone Raises Query

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  5. Vaccines Used against Germs Which Produce Rheumatism

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  6. Unmanned Balloon Used to Make Aerial Maps

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  7. Rescued Swallows Return to Home in Germany

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  8. Found: Most Important Missing Link

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  9. In Science Fields

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  10. How Heavy Is a Mountain? “A Classic of Science”

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  11. Yellow Fever Susceptibility Determined by New Test

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  12. Reactions of Normal Eyes Timed with Movie Camera

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  13. Iodine from Oil Brines Breaks Former Monopoly

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  14. Modern Indians Surpassed by Monte Alban Jewelers

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  15. Synthetic Hormones May Be Too Pure to Be Effective

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  16. Genes, Once Hypothetical, Now Seen and Photographed

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  17. Secret of Photosynthesis Baffling to Scientists

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  18. New Heavenly Neighbor Passes within Orbit of the Earth

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  19. Reinmuth’s “Comet” Shown to Be New Minor Planet

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  20. Nature Ramblings: Hawk-Moth

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  21. Heavy Tax on Farm Products Levied by Plant Diseases

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  22. First Glances at New Books

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  23. Front Matter

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  24. X-Rays of Liver Possible through Chemical Injection

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  25. Huge Canal May Be Built across Northern Florida

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