Feature

New Machines and Gadgets

Front Matter

Amplify Electric Current

New Drive for Foundation

New Steps in Electricity

Largest Ram-Jet Engine Ever Flown Passes Test

Plane and Missile Bodies Must Be Slim and Pointed

Vaccine Protects Poultry from Newcastle Disease

New Type of Bed Proposed

STS Honorable Mentions

Recalls 400,000 Digits

Is Test C to Be Secret?