Feature

Chemically “Toughened” Wool Is Developed

First Glances at New Books

Front Matter

Colchicine Injections Change Chromosomes in Fruit Flies

[Photograph]: For FM

Silver in Place of Tin Recommended for Solder

Assembly Line Method Applied to Sun Bathing

Cancer Institute’s Personnel at Disposal of War Agencies

New Sources of Ultraviolet Several Times More Effective

Remarkably Low Wartime Death Rate in England

Roses Yield Vitamin C to Enrich British Diet

[Photograph]: Small Protector