Feature

New Biological Society Formed at Science Meeting

Front Matter

Bats Use Supershrill Cries to Pilot Themselves in Dark

Counter-Plan for Small Nations Urgent Need of Democracies

Good Health for 1941

Fly Reverses Role; Catches Spider in Web

Air-Raid Shelter in America Proposed to Guard Best Data

[Photograph]: How Comet Looks

[Photograph]: On Production Line

Smallest Pieces of Atoms Cause Biggest Explosions

Extremely High Pressures “Paralyze” Protoplasm

New England Quakes Forecast New Year Week