Feature

Invention of “Duck” Wins Prize for Dr. Jaggar

New Quinine Sources

Scap of Parchment Has Arabic Block Print

In Science Fields

Guide to the Moon

Miniature Electron Tubes Already in War Use

Normal Foot Lengths

Nature Ramblings: Unprofitable Islands

Used like Radar

New Heaters for Buses May Use Air Conditioning

Un-Sticking Wheat Starch by Use of Sulfur Dioxide

Books of the Week