Feature

Huxley Says Birth Control Threatens World Depopulation

Gibbon-like Animal Declared Ancestor of Both Man and Ape

Magnesium Cement Developed Having Hardness of Granite

America Really Alberica, Old Czech Paper Shows

Front Matter

Artificial Lagoon Ends Ice Troubles in Water System

Ruins of Greek Building Found under Modern Homes

Man Pictured as Aggressor in World-Wide War on Insects

The Franklin Stove: “A Classic Invention”

Nature Ramblings: Norway Maple

Forerunners of Cancer in Digestive Tract Named

Insect Species Produce Families All of Same Sex