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Features

French Submarine Torpedo Boats

The Recent Explosion of a Ten-Inch Army Gun

United States Navy and Armstrong Guns at the Proving Grounds

Proposal to Build the New York Rapid Transit Tunnel

Congress of Life Insurance Doctors in Belgium

Some New Kite Experiments at Bayonne

An Under-Trolley Car Burns Up

Death of General Flagler

Spain's New Cruiser

Electricity at High Pressures

Tests of Wireless Telegraphy

Foreign Exhibitions of 1899

The Audubon Society

An Improved Lens-Grinding Machine

A New Power-Hammer

Powerful Freight Locomotive for the Pennsylvania Railroad

Carrara and Its Quarries

A Simple Ventilator for Railway-Cars

A Novel Insulator

Cause of the Recent Explosion of the Ten-Inch Gun at Sandy Hook Explained

By Hudson Maxim

A Glimpse of the Paris Exposition of 1900

By Charles Richards Dodge

The Hornet and Its Home

To Inventors - April 8, 1899

Departments

  • Letters

    Correspondence - April 8, 1899

  • Recommended

    New Books, Etc. - April 8, 1899

  • Departments

    Recently Patented Inventions - April 8, 1899

  • Index of Inventions - April 8, 1899

  • Notes and Queries - April 8, 1899

  • Business and Personal - April 8, 1899

  • Patents - April 8, 1899

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