Feature

  1. Electric Apparatus Probes Secrets of Earth’s Interior

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  2. Lack of Practise Does Not Injure Skill of Typist

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  3. War: The Destroyer of Mankind: “A Classic of Science”

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  4. Business Continues while Building Is Turned Around

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  5. New Laws of Indian Speech Gained from Cheyenne Study

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  6. Earth-Eating Custom Still Practised by Many Tribes

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  7. Geese Are Photographed Flying at High Altitude

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  8. Wounded Maple Tree Eating Own Heart

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  9. The Egyptian Schoolboy’s Arithmetic

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  10. Flying to Be Made Safer through New Radio Device

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  11. Orang-Utan Excels Other Monkeys in Mental Test

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  12. Front Matter

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