All Stories

Effects of Liver Extract on Plants and Man

New Cable Sends 2500 Letters a Minute

Nature Ramblings: House Centipede

Explains How “Spirits” Shake Tent in Indian Ceremony

[Photograph]: Padding an Airplane Cabin

Noxious Weed Nurses Japanese Beetle Enemy

First Glances at New Books

Front Matter

Einstein Discusses Revolution He Caused in Scientific Thought

An excerpt from a speech Albert Einstein gave in Pasadena on January 15, 1931.

Relativity Passes Three Tests Declared Crucial by Einstein

Possible 1932 Flu Epidemic Indicated by Ten-Year Survey

Tropical Fungus Spores Resist Cold as Well as Heat