Feature

Fourth Pithecanthropus First Adult Male for Study

Undulant Fever Antiserum Helped Three out of Five

Front Matter

Science Progressed in 1939

As War Bars Science Advance Scientists Plan for Peace

Russia’s Men of Fighting Age Outnumber Finland’s 35 to 1

Chemical Remedy Promises Pleasanter Pneumonia Cure

[Photograph]: Molecules Are “Left-Handed” Too

Life of Lower Animals Prolonged by Heavy Water

In Science Fields

Three New White Dwarfs Discovered in the Heavens

Americans Won’t Make War but Willing Others Should