Feature

New X-Ray Method Reveals Sex before Birth of Baby

In Science Fields

Expedition Seeks Indians Who Met Ponce de Leon

Zinc, Cadmium and Mercury: “A Classic of Science”

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