The New York High-Pressure Fire Protection System

The Comparative Trials of Our Scout Cruisers

Acetylene Lamps and Smoky Automobiles

Rubber Statistics of 1907

“Gluten” Bread and Cracker Frauds

An Automatic Milk Supply

By Our English Correspondent

New Process for Making Shoes

By The Paris Correspondent of the Scientific American

A Reinforced Concrete Elevated Tank

An Observatory for Public Use

By Our Paris Correspondent

Some Experiments with Carbon Disulphide

Curious Facts about Numbers

Joining of Last Span of Blackwell's Island Bridge

How to Construct a Balloon.--The Making, Inflating and Sailing of Gas Balloons

By B. Courtright, Aeronaut; Member Aero Society of Great Britain

The Ever-Shifting Eyeball.--Some New Experiments and Some New Conclusions

New Types of Lifebelts

By Our English Correspondent