Feature

Monkeys Half as Big as Rats Shown in American Zoo

Opossum’s Diet Shows He Eats Just about Anything

Erratum: Mercury Vapor Is Used in New Turbine-Generator

Books of the Week

“In-between” Atom Smasher Is Unveiled at Harvard

Sky to Be Photographed

Migration Routes of Yellowstone Elk Studied

New Type Carbon Arc Lamp Promises Double Brightness

Front Matter

Scientists Discover What Happens in Heart Flutter

Night Traffic Deaths Four Times Daylight Rate

Multiple Sclerosis Aided