Feature

New Gas-Oil Explosives Would Help U. S. in War

Metrazol Treatments Cure by “New Deal of Nerve Ends”

Propaganda Balloons Used in World War, Too

Nature Ramblings: Permanent Invasions

Front Matter

[Photograph]: X-Ray Heart Beat

New World Federation Foreseen after War

Manifesto Proposes New International Order

Window on Rabbit’s Ear Aids Study of Dust in Silicosis

Babies Are Protected from Germs in Hospital Nurseries

Christmas Stars

Combine Research to Produce Vast Amount of Super Gas