Feature

Two Darknesses

Sulfanilamide to Be Used in Offensive on Blindness

Machine Gun Barrel Has Life of 1,000 Seconds

New Cosmic Ray Studies Show Huge Bursts of Energy

Human Cancer Transplanted onto Rabbit Eyes for Study

New Operation Promises Conquest of Angina Pectoris

Emergency Bank Can Give Blood at Cost of a Dollar

[Photograph]: Another Name and No Perfume

New Books on Science

[Photograph]: Putting on the Pinch

100,000-Mile Sunspot Crosses Face of Sun

[Photograph]: Autumnal Insect Ogre