Feature

New Machines and Gadgets

Nature Ramblings: Not Guilty

First Glances at New Books

Front Matter

New Potent ‘Flu Vaccine to Get Human Trials

[Photograph]: “World’s Deadliest Fighter”

Common Unrecognized Disease May Be Cause of Lung Ills

People’s Observatory Dedicated in Pittsburgh

Tooth Decay and Pyorrhea Linked to Lack of B Vitamins

Timber Cut A.D. 217 Gives Oldest Building Date

New Weapon against Germs Obtained from Mold

Same Plastic May Be Made Hard or Soft, X-Ray Shows