Vol. 19 No. #531

More Stories from the June 13, 1931 issue

  1. Humor Saved Lincoln from Serious Mental Disease

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  2. [Photograph]: Like the Plan of a Modern City

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  3. Cost of Electricity Read Directly in Cents Per Hour

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  4. Mutes Given Natural Speech by Improved Voice Box

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  5. Twin Albino Robins Hatched with Normal Bird

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  6. Would Explain Deafness by Study of Ears after Death

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  7. [Photograph]: Thousands of Colors; No Two Alike

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  8. Death and Loss of Sight Are Held to Be of Equal Value

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  9. Astronomers Plan Locations for 1932 Eclipse Observatories

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  10. Artist Paints Spectrum of Recently Found Element

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  11. The Toucan: The Magpie of Brazil: “A Classic of Science”

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  12. In Science Fields

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  13. Beer-Making 8,000 Years Ago

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  14. Students Influenced by What “Everybody Thinks”

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  15. Prehistoric Iroquois Camp Explored by Scientists

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  16. Delicate Cellulose Destroyed by Wood Pulping Methods

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  17. Moving Trains Weighed by New Giant Scales

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  18. Many Failures Do Not Stifle Humanity’s Desire to Marry

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  19. Nature Ramblings: Toadstools

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  20. 474-Year-Old Family Record Analyzed by Chinese Student

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  21. Movies Used for First Time as Aid to Psycho-Analysis

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  22. First Glances at New Books

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  23. Front Matter

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  24. Rocks Disclose Their Ages after Treatment with Acid

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  25. Coming Epileptic Attacks Predicted from Charts

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