Feature

Oceans Half Billion Years Old, Their Salt Tells Scientists

Ice Floe Rotation Prevents Magnetic Variation Measures

Millions of Americans Fail to Affect National Economy

Youth at the Wheel Found Skilful but a Great Hazard

Hunt in New Guinea for Foe of Sugar Cane Insect Pest

Poor Military Aircraft Must Be Avoided through Research

In Science Fields

Front Matter

Gasoline-Fueled Motors May Be Banned from Airplanes

Ship’s Officer Saw Two Setting Moons

Saliva from Vampire Bats Contains No Anti-Coagulant

First Glances at New Books