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Features

The Cost of Government

Government Tests of Railway Safety Devices

Congress Increases Patent Office Salaries

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

The Double-Flow Turbine

The Autogenous Soldering of Aluminium in Aeronautic Construction

A New Balloon Material

The Current Supplement

Training in the Navy

By John R. Cox

New Electrical Apparatus of the United States Signal Corps

By C. H. Claudy

The Motor-Boat Race to Bermuda

Farman's Aeroplane Flights in Belgium

Making Casts in Gelatin Molds

By W. Frank M'Clure

A German Compass-Testing Station

By The Berlin Correspondent of the Scientific American

A Remarkable Mountain Railway

By Alfred Gradenwitz

An Improved Dabbing Brush

Saw Swage

An Aero Tube Flying Machine

Pipe and Rod Lifting Tongs

Bracket Hose Reel

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June 20, 1908