Feature

First Glances at New Books

Geophysics Goes to War

Army Backs Total Blackouts Doubts Value of Dim-Outs

Mass Immunization Urged Where Children Face Bombing

[Photograph]: Retreading

Front Matter

Swift Stellar Object Still Unsolved Mystery

New Blackout Bulb Developed by Army

Synthetic Pain-Killing Drug May Be Morphine Substitute

Nature Ramblings: A Week for Wildlife

[Photograph]: Porky up a Tree

Unified Science Must Serve Unified World after War