Feature

Hydrogenation to Bring Better Oils and Gasoline

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

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