Feature

Barro Colorado Island Now a Government Center

Nature Ramblings: Rooted Counsellors

[Photograph]: Science Service at the Fair

Fourth Comet of the Year Is Found by Harvard Man

Chemical Treatment of Glass Makes It More Transparent

Clouds Prevent the Viewing of Sun’s Total Eclipse

“Whiskers” Made Visible on Micro-Organisms

Back Matter

Big Influenza Epidemic Due as 25-Year Cycle Nears End

New Measles Vaccine Successful in First Trials

Clouds of Calcium, Sodium Found to Vary in Density

Cunningham Comet May Be Bright for Christmas Night