Feature

  1. Hearing Aid Automatically Suppresses Loud Noises

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  2. 36 Mouth Habits Do Damage to Teeth

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  3. Nature Ramblings: Falling Leaves

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  4. Long Distance Dialing

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  5. Books of the Week

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  6. Heat Peril from A-Bomb

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  7. World-Wide Standards Set for Signal Light Colors

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  8. New Machines and Gadgets

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  9. Front Matter

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  10. Ultraviolet May Stop TB

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  11. [Photograph]: Angola Colobus Monkeys

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  12. High Blood Pressure Reduced by Chemicals

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