Feature

New Machines and Gadgets

Front Matter

Cramped before Birth

Dams for Domestic Needs

Diesel-Electric Cooling

Talking into Your Radio

Concrete Covers Cyclotron to Absorb Dangerous Rays

Science Foundation Closer

Ultraviolet Radiation Can Change 2,4-D’s Power

Shots of Drugs “Aimed”

Synthetic Cheer-up Drug

[Photograph]: Reflectors on Buoys