Feature

Chemical Fights Leprosy

New Machines and Gadgets

Front Matter

Help in Water Problem

Clue to Gold in Ashes

Shaking Dust Mop out Window Outmoded

Needed: Improvement in American Civil Airports

“Toothpaste-Tube” Pump Handles Corrosive Material

Separate Purer Part ACTH

[Photograph]: Uranium Shadow Show

Bauxite by-Products Are Recovered by New Process

Plant Timothy Grass Seeds Close for Large Crop