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Features

French Submarine Torpedo Boats

Proposal to Build the New York Rapid Transit Tunnel

United States Navy and Armstrong Guns at the Proving Grounds

The Recent Explosion of a Ten-Inch Army Gun

An Under-Trolley Car Burns Up

The Audubon Society

Tests of Wireless Telegraphy

Spain's New Cruiser

Some New Kite Experiments at Bayonne

Foreign Exhibitions of 1899

Electricity at High Pressures

Death of General Flagler

Congress of Life Insurance Doctors in Belgium

A New Power-Hammer

Powerful Freight Locomotive for the Pennsylvania Railroad

An Improved Lens-Grinding Machine

Carrara and Its Quarries

A Novel Insulator

A Simple Ventilator for Railway-Cars

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

  • Business and Personal - April 8, 1899

  • Index of Inventions - April 8, 1899

  • Notes and Queries - April 8, 1899

  • Patents - April 8, 1899

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April 08, 1899

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