New York's Radio Pilot Cable, To Preserve a Beautiful and Historic Work and more

Gas Engine Versus Steam Engine

The Role Which the Motor Truck Can Play in Transportation, as Indicated by California's Experience

A Neat Problem in Hydraulics

How the Delaware River Was Held at Bay During the Construction of the Naval Drydock at Philadelphia

Varying the Airplane Propeller Pitch, Joseph Norman Lockyer, K. C. B. and more

How a State May Grow a Timber Supply

What Has Been Said About Einstein

A Review of the More Important Popular and Semi-Popular Books and Articles in English

Fire Without Firemen

How the Coal Is Fed Mechanically to the Huge Grates Beneath the Modern Boiler

Oil as a Locomotive Fuel

Wood That Is Stronger Than Steel

How Thin Veneers and Water-Proof Glue Have Conspired to Build a New Industry

Items In Brief

A Department Devoted to Current News in All Fields of Pure and Applied Science