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Features

Solving the Pier Problem, An Admirable Civic Body and more

A Mechanical Bill Counter for the United States Treasury

By C. H. Claudy

An Automatic Gasoline Engine Cream Separator

By Frank C. Perkins

An Apparatus for Making Observations from Aeroplanes

By the Paris Correspondent of the Scientific American

An American Small-arms Plant in Australia

A Triumph for American Machine Tools

The Parcels Post Zone System

The New Maps and How They are Used, To Our Subscribers and more

By Emma M. V. Triepel

Catapulting a Hydro-aeroplane from a Fighting Ship

Adapting the Flying Machine to the Requirements of the Navy

By Robert G. Skerrett

Working a Whistler

A Dangerous Task That Requires Skill

By C. H. Claudy

Wireless Telegraphy Without Sparks

A Rule to Find the Day of the Week upon Which Any Given Date in the Christian Era Fell

By John P. Atchley

Departments

  • Letters

    Correspondence - December 14, 1912

  • Departments

    Inventions New and Interesting - December 14, 1912

  • Recently Patented Inventions - December 14, 1912

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December 14, 1912

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