Feature

[Photograph]: Vitamin K Discoverer

Evolution under Attack by Nazis in Germany

Chemical Treatment Tried for Infantile Paralysis

America’s Defense Plans Include Civilian Welfare

Exhibit Shows Space Ship as Viewed by Scientists

Nature Ramblings: Patchwork Forests Best

In Science Fields

Research Is Most Fundamental to Obtaining Air Supremacy

Front Matter

Fie Planets Shine

Canadian Science Supports Dominion’s War Effort

National Defense Means More Jobs for Handicapped