Feature

Cleaning Long Pipe Lines Is Strange, Tough Task

Patent Describes New Blind Landing System

Dean of Plant Explorers Honored with Medal

Collision Theory of Earth’s Origin Is Exploded

Engineers’ Inquiry Asks: Are Patents Suppressed?

New Experiments Make Water Flow Uphill

What Makes a Girl Excel at Dancing, Swimming, Tennis?

In Science Fields

Prehistoric Ellis Island

League of Nations Helping Chinese to Fight Plague

New Soviet Tractor Performs Twenty-Two Operations

United States Leads World in Chemistry; Germany 3rd