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A Decade of Wireless Telegraphy

Steel and Wooden Cars in the Subway Fire

Ocean Races for Small Boats

Steam Jacketing Investigations

The Need of a Pure-Food Law

By Charles Richards Dodge

The British Naval Programme for 1906

Dried Milk--A New Process

The Magic Sphere--An Illusion Apparatus in Which Curious Optical Effects are Produced by Centrifugal Force

By Alfred Gradenwitz

The Hot-Air Boiler

The Latest and Largest Steamship

European Earthquake Recorders

By the Paris Correspondent of the Scientific American

Tempered Ductile Metals

By Arthur F. Bresler

Wellman's Motor Bicycle Sled

A Simple Adding Machine

Business and Personal Wants


  • Departments


  • Recently Patented Inventions

  • Notes and Queries

  • Index of Inventions

  • Patents

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