Feature

New Machines and Gadgets

Nature Ramblings: The Blessed Meek

Front Matter

[Photograph]: Guardians of Rural Electric Service

Hope of Quick Polio Test

Synthetic Resin Makes Deciduous Woods Usable

Radioisotopes Cancer Aid

Photographs of Sea-Life Taken at 3.5 Mile Depth

Big Sister Unhappy

Boring into Wood

Not Poisonous

Ultrasonic Sound Waves Detect Flaws in Metals