Feature

Hybrid Yeast Forms

Baby Rival to Vacuum Tube

Homing Instinct of Frogs

New Machines and Gadgets

ACTH Decreases Blood Flow through Brain

Roll and Slice Method Cuts Jet Engine Cost

Joint Labs to Serve All British Scientists

Quick Warm-up Needed to Reduce Engine Wear

New TB Drugs on Trial

Front Matter

Cold Still Due in East; Warm in West

Leaf Analysis Tells Fertilizer Needs