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German Acid Treatment Improves Cotton Cloth

Gases Heavier than Lead

Sees Future Factories Growing Own Fuel

New Instrument May Locate Old Tombs

Drowning out Rice-Field Weeds

Danish Explorer Describes Ancient Culture of Eskimo

Trick Chair Tests Fear Reactions

Will Urge Faster Mapping of World

Milk for Mosquitoes

“Birth Control” among Plant Lice Due to Light

Psychologist Explains Mystic Phenomenon