Feature

Yo-Yo Teaches Physics

Rare Hawaiian Seal Arrives on Mainland

Find New, Life-Saving Use for Cortisone

New Machines and Gadgets

Front Matter

Speedy Vaccine for ‘Flu

Exercise for Tired Feet

Rocketeers Reminded Earth Turns by Aiming Correction

Black Frogs Turn White after Shot of Hormone

Test Resistance to Strain

New Camera Photographs Meteors Small as Buckshot

Frontal Lobotomy Changes