Feature

[Photograph]: Patented

Invasion of Denmark Endangers Research Center

Dinitrophenol-Sulfanilamide Kills Tuberculosis Germ

[Photograph]: PWA Report

New Books on Science

[Photographs]: How Hard?

[Photograph]: Art for Cleopatra’s Sake

[Photograph]: Scientists Honored

Front Matter

Operation Gives Relief in Hypertension Cases

[Photograph]: Skid Prevention at Home

All-American Cigarettes Marketed for First Time