Government Tests of Railway Safety Devices

The Double-Flow Turbine

Improvement of New Jersey-New York Suburban Service--I

Congress Increases Patent Office Salaries

The Cost of Government

A New Balloon Material

The Current Supplement

The Autogenous Soldering of Aluminium in Aeronautic Construction

Training in the Navy

New Electrical Apparatus of the United States Signal Corps

The Motor-Boat Race to Bermuda

Farman's Aeroplane Flights in Belgium

Making Casts in Gelatin Molds

A German Compass-Testing Station

By The Berlin Correspondent of the Scientific American

A Remarkable Mountain Railway

Pipe and Rod Lifting Tongs

An Aero Tube Flying Machine

An Improved Dabbing Brush

Saw Swage

Bracket Hose Reel