Feature

Gases Heavier than Lead

Yellow Fever Now Making Last Stend

New Instrument May Locate Old Tombs

Danish Explorer Describes Ancient Culture of Eskimo

Trick Chair Tests Fear Reactions

Mosquitoes Thrive in Warm Weather

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Psychological Research Planned at Yale University

United States Supplies Trees to Fight Leprosy in Tropics

The Use of “Dog” in Names

Desert Insects Have a Hot Time

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